Adding upstream version 110.0.1.upstream/110.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

82 files changed, 23167 insertions, 0 deletions

diff --git a/remote/test/puppeteer/src/common/Accessibility.ts b/remote/test/puppeteer/src/common/Accessibility.ts
new file mode 100644
index 0000000000..ea540c01d7
--- /dev/null
+++ b/remote/test/puppeteer/src/common/Accessibility.ts
@@ -0,0 +1,572 @@
+/**
+ * Copyright 2018 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the 'License');
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an 'AS IS' BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import {Protocol} from 'devtools-protocol';
+import {CDPSession} from './Connection.js';
+import {ElementHandle} from './ElementHandle.js';
+
+/**
+ * Represents a Node and the properties of it that are relevant to Accessibility.
+ * @public
+ */
+export interface SerializedAXNode {
+  /**
+   * The {@link https://www.w3.org/TR/wai-aria/#usage_intro | role} of the node.
+   */
+  role: string;
+  /**
+   * A human readable name for the node.
+   */
+  name?: string;
+  /**
+   * The current value of the node.
+   */
+  value?: string | number;
+  /**
+   * An additional human readable description of the node.
+   */
+  description?: string;
+  /**
+   * Any keyboard shortcuts associated with this node.
+   */
+  keyshortcuts?: string;
+  /**
+   * A human readable alternative to the role.
+   */
+  roledescription?: string;
+  /**
+   * A description of the current value.
+   */
+  valuetext?: string;
+  disabled?: boolean;
+  expanded?: boolean;
+  focused?: boolean;
+  modal?: boolean;
+  multiline?: boolean;
+  /**
+   * Whether more than one child can be selected.
+   */
+  multiselectable?: boolean;
+  readonly?: boolean;
+  required?: boolean;
+  selected?: boolean;
+  /**
+   * Whether the checkbox is checked, or in a
+   * {@link https://www.w3.org/TR/wai-aria-practices/examples/checkbox/checkbox-2/checkbox-2.html | mixed state}.
+   */
+  checked?: boolean | 'mixed';
+  /**
+   * Whether the node is checked or in a mixed state.
+   */
+  pressed?: boolean | 'mixed';
+  /**
+   * The level of a heading.
+   */
+  level?: number;
+  valuemin?: number;
+  valuemax?: number;
+  autocomplete?: string;
+  haspopup?: string;
+  /**
+   * Whether and in what way this node's value is invalid.
+   */
+  invalid?: string;
+  orientation?: string;
+  /**
+   * Children of this node, if there are any.
+   */
+  children?: SerializedAXNode[];
+}
+
+/**
+ * @public
+ */
+export interface SnapshotOptions {
+  /**
+   * Prune uninteresting nodes from the tree.
+   * @defaultValue true
+   */
+  interestingOnly?: boolean;
+  /**
+   * Root node to get the accessibility tree for
+   * @defaultValue The root node of the entire page.
+   */
+  root?: ElementHandle<Node>;
+}
+
+/**
+ * The Accessibility class provides methods for inspecting Chromium's
+ * accessibility tree. The accessibility tree is used by assistive technology
+ * such as {@link https://en.wikipedia.org/wiki/Screen_reader | screen readers} or
+ * {@link https://en.wikipedia.org/wiki/Switch_access | switches}.
+ *
+ * @remarks
+ *
+ * Accessibility is a very platform-specific thing. On different platforms,
+ * there are different screen readers that might have wildly different output.
+ *
+ * Blink - Chrome's rendering engine - has a concept of "accessibility tree",
+ * which is then translated into different platform-specific APIs. Accessibility
+ * namespace gives users access to the Blink Accessibility Tree.
+ *
+ * Most of the accessibility tree gets filtered out when converting from Blink
+ * AX Tree to Platform-specific AX-Tree or by assistive technologies themselves.
+ * By default, Puppeteer tries to approximate this filtering, exposing only
+ * the "interesting" nodes of the tree.
+ *
+ * @public
+ */
+export class Accessibility {
+  #client: CDPSession;
+
+  /**
+   * @internal
+   */
+  constructor(client: CDPSession) {
+    this.#client = client;
+  }
+
+  /**
+   * Captures the current state of the accessibility tree.
+   * The returned object represents the root accessible node of the page.
+   *
+   * @remarks
+   *
+   * **NOTE** The Chromium accessibility tree contains nodes that go unused on
+   * most platforms and by most screen readers. Puppeteer will discard them as
+   * well for an easier to process tree, unless `interestingOnly` is set to
+   * `false`.
+   *
+   * @example
+   * An example of dumping the entire accessibility tree:
+   *
+   * ```ts
+   * const snapshot = await page.accessibility.snapshot();
+   * console.log(snapshot);
+   * ```
+   *
+   * @example
+   * An example of logging the focused node's name:
+   *
+   * ```ts
+   * const snapshot = await page.accessibility.snapshot();
+   * const node = findFocusedNode(snapshot);
+   * console.log(node && node.name);
+   *
+   * function findFocusedNode(node) {
+   *   if (node.focused) return node;
+   *   for (const child of node.children || []) {
+   *     const foundNode = findFocusedNode(child);
+   *     return foundNode;
+   *   }
+   *   return null;
+   * }
+   * ```
+   *
+   * @returns An AXNode object representing the snapshot.
+   */
+  public async snapshot(
+    options: SnapshotOptions = {}
+  ): Promise<SerializedAXNode | null> {
+    const {interestingOnly = true, root = null} = options;
+    const {nodes} = await this.#client.send('Accessibility.getFullAXTree');
+    let backendNodeId: number | undefined;
+    if (root) {
+      const {node} = await this.#client.send('DOM.describeNode', {
+        objectId: root.remoteObject().objectId,
+      });
+      backendNodeId = node.backendNodeId;
+    }
+    const defaultRoot = AXNode.createTree(nodes);
+    let needle: AXNode | null = defaultRoot;
+    if (backendNodeId) {
+      needle = defaultRoot.find(node => {
+        return node.payload.backendDOMNodeId === backendNodeId;
+      });
+      if (!needle) {
+        return null;
+      }
+    }
+    if (!interestingOnly) {
+      return this.serializeTree(needle)[0] ?? null;
+    }
+
+    const interestingNodes = new Set<AXNode>();
+    this.collectInterestingNodes(interestingNodes, defaultRoot, false);
+    if (!interestingNodes.has(needle)) {
+      return null;
+    }
+    return this.serializeTree(needle, interestingNodes)[0] ?? null;
+  }
+
+  private serializeTree(
+    node: AXNode,
+    interestingNodes?: Set<AXNode>
+  ): SerializedAXNode[] {
+    const children: SerializedAXNode[] = [];
+    for (const child of node.children) {
+      children.push(...this.serializeTree(child, interestingNodes));
+    }
+
+    if (interestingNodes && !interestingNodes.has(node)) {
+      return children;
+    }
+
+    const serializedNode = node.serialize();
+    if (children.length) {
+      serializedNode.children = children;
+    }
+    return [serializedNode];
+  }
+
+  private collectInterestingNodes(
+    collection: Set<AXNode>,
+    node: AXNode,
+    insideControl: boolean
+  ): void {
+    if (node.isInteresting(insideControl)) {
+      collection.add(node);
+    }
+    if (node.isLeafNode()) {
+      return;
+    }
+    insideControl = insideControl || node.isControl();
+    for (const child of node.children) {
+      this.collectInterestingNodes(collection, child, insideControl);
+    }
+  }
+}
+
+class AXNode {
+  public payload: Protocol.Accessibility.AXNode;
+  public children: AXNode[] = [];
+
+  #richlyEditable = false;
+  #editable = false;
+  #focusable = false;
+  #hidden = false;
+  #name: string;
+  #role: string;
+  #ignored: boolean;
+  #cachedHasFocusableChild?: boolean;
+
+  constructor(payload: Protocol.Accessibility.AXNode) {
+    this.payload = payload;
+    this.#name = this.payload.name ? this.payload.name.value : '';
+    this.#role = this.payload.role ? this.payload.role.value : 'Unknown';
+    this.#ignored = this.payload.ignored;
+
+    for (const property of this.payload.properties || []) {
+      if (property.name === 'editable') {
+        this.#richlyEditable = property.value.value === 'richtext';
+        this.#editable = true;
+      }
+      if (property.name === 'focusable') {
+        this.#focusable = property.value.value;
+      }
+      if (property.name === 'hidden') {
+        this.#hidden = property.value.value;
+      }
+    }
+  }
+
+  #isPlainTextField(): boolean {
+    if (this.#richlyEditable) {
+      return false;
+    }
+    if (this.#editable) {
+      return true;
+    }
+    return this.#role === 'textbox' || this.#role === 'searchbox';
+  }
+
+  #isTextOnlyObject(): boolean {
+    const role = this.#role;
+    return role === 'LineBreak' || role === 'text' || role === 'InlineTextBox';
+  }
+
+  #hasFocusableChild(): boolean {
+    if (this.#cachedHasFocusableChild === undefined) {
+      this.#cachedHasFocusableChild = false;
+      for (const child of this.children) {
+        if (child.#focusable || child.#hasFocusableChild()) {
+          this.#cachedHasFocusableChild = true;
+          break;
+        }
+      }
+    }
+    return this.#cachedHasFocusableChild;
+  }
+
+  public find(predicate: (x: AXNode) => boolean): AXNode | null {
+    if (predicate(this)) {
+      return this;
+    }
+    for (const child of this.children) {
+      const result = child.find(predicate);
+      if (result) {
+        return result;
+      }
+    }
+    return null;
+  }
+
+  public isLeafNode(): boolean {
+    if (!this.children.length) {
+      return true;
+    }
+
+    // These types of objects may have children that we use as internal
+    // implementation details, but we want to expose them as leaves to platform
+    // accessibility APIs because screen readers might be confused if they find
+    // any children.
+    if (this.#isPlainTextField() || this.#isTextOnlyObject()) {
+      return true;
+    }
+
+    // Roles whose children are only presentational according to the ARIA and
+    // HTML5 Specs should be hidden from screen readers.
+    // (Note that whilst ARIA buttons can have only presentational children, HTML5
+    // buttons are allowed to have content.)
+    switch (this.#role) {
+      case 'doc-cover':
+      case 'graphics-symbol':
+      case 'img':
+      case 'Meter':
+      case 'scrollbar':
+      case 'slider':
+      case 'separator':
+      case 'progressbar':
+        return true;
+      default:
+        break;
+    }
+
+    // Here and below: Android heuristics
+    if (this.#hasFocusableChild()) {
+      return false;
+    }
+    if (this.#focusable && this.#name) {
+      return true;
+    }
+    if (this.#role === 'heading' && this.#name) {
+      return true;
+    }
+    return false;
+  }
+
+  public isControl(): boolean {
+    switch (this.#role) {
+      case 'button':
+      case 'checkbox':
+      case 'ColorWell':
+      case 'combobox':
+      case 'DisclosureTriangle':
+      case 'listbox':
+      case 'menu':
+      case 'menubar':
+      case 'menuitem':
+      case 'menuitemcheckbox':
+      case 'menuitemradio':
+      case 'radio':
+      case 'scrollbar':
+      case 'searchbox':
+      case 'slider':
+      case 'spinbutton':
+      case 'switch':
+      case 'tab':
+      case 'textbox':
+      case 'tree':
+      case 'treeitem':
+        return true;
+      default:
+        return false;
+    }
+  }
+
+  public isInteresting(insideControl: boolean): boolean {
+    const role = this.#role;
+    if (role === 'Ignored' || this.#hidden || this.#ignored) {
+      return false;
+    }
+
+    if (this.#focusable || this.#richlyEditable) {
+      return true;
+    }
+
+    // If it's not focusable but has a control role, then it's interesting.
+    if (this.isControl()) {
+      return true;
+    }
+
+    // A non focusable child of a control is not interesting
+    if (insideControl) {
+      return false;
+    }
+
+    return this.isLeafNode() && !!this.#name;
+  }
+
+  public serialize(): SerializedAXNode {
+    const properties = new Map<string, number | string | boolean>();
+    for (const property of this.payload.properties || []) {
+      properties.set(property.name.toLowerCase(), property.value.value);
+    }
+    if (this.payload.name) {
+      properties.set('name', this.payload.name.value);
+    }
+    if (this.payload.value) {
+      properties.set('value', this.payload.value.value);
+    }
+    if (this.payload.description) {
+      properties.set('description', this.payload.description.value);
+    }
+
+    const node: SerializedAXNode = {
+      role: this.#role,
+    };
+
+    type UserStringProperty =
+      | 'name'
+      | 'value'
+      | 'description'
+      | 'keyshortcuts'
+      | 'roledescription'
+      | 'valuetext';
+
+    const userStringProperties: UserStringProperty[] = [
+      'name',
+      'value',
+      'description',
+      'keyshortcuts',
+      'roledescription',
+      'valuetext',
+    ];
+    const getUserStringPropertyValue = (key: UserStringProperty): string => {
+      return properties.get(key) as string;
+    };
+
+    for (const userStringProperty of userStringProperties) {
+      if (!properties.has(userStringProperty)) {
+        continue;
+      }
+
+      node[userStringProperty] = getUserStringPropertyValue(userStringProperty);
+    }
+
+    type BooleanProperty =
+      | 'disabled'
+      | 'expanded'
+      | 'focused'
+      | 'modal'
+      | 'multiline'
+      | 'multiselectable'
+      | 'readonly'
+      | 'required'
+      | 'selected';
+    const booleanProperties: BooleanProperty[] = [
+      'disabled',
+      'expanded',
+      'focused',
+      'modal',
+      'multiline',
+      'multiselectable',
+      'readonly',
+      'required',
+      'selected',
+    ];
+    const getBooleanPropertyValue = (key: BooleanProperty): boolean => {
+      return properties.get(key) as boolean;
+    };
+
+    for (const booleanProperty of booleanProperties) {
+      // RootWebArea's treat focus differently than other nodes. They report whether
+      // their frame  has focus, not whether focus is specifically on the root
+      // node.
+      if (booleanProperty === 'focused' && this.#role === 'RootWebArea') {
+        continue;
+      }
+      const value = getBooleanPropertyValue(booleanProperty);
+      if (!value) {
+        continue;
+      }
+      node[booleanProperty] = getBooleanPropertyValue(booleanProperty);
+    }
+
+    type TristateProperty = 'checked' | 'pressed';
+    const tristateProperties: TristateProperty[] = ['checked', 'pressed'];
+    for (const tristateProperty of tristateProperties) {
+      if (!properties.has(tristateProperty)) {
+        continue;
+      }
+      const value = properties.get(tristateProperty);
+      node[tristateProperty] =
+        value === 'mixed' ? 'mixed' : value === 'true' ? true : false;
+    }
+
+    type NumbericalProperty = 'level' | 'valuemax' | 'valuemin';
+    const numericalProperties: NumbericalProperty[] = [
+      'level',
+      'valuemax',
+      'valuemin',
+    ];
+    const getNumericalPropertyValue = (key: NumbericalProperty): number => {
+      return properties.get(key) as number;
+    };
+    for (const numericalProperty of numericalProperties) {
+      if (!properties.has(numericalProperty)) {
+        continue;
+      }
+      node[numericalProperty] = getNumericalPropertyValue(numericalProperty);
+    }
+
+    type TokenProperty =
+      | 'autocomplete'
+      | 'haspopup'
+      | 'invalid'
+      | 'orientation';
+    const tokenProperties: TokenProperty[] = [
+      'autocomplete',
+      'haspopup',
+      'invalid',
+      'orientation',
+    ];
+    const getTokenPropertyValue = (key: TokenProperty): string => {
+      return properties.get(key) as string;
+    };
+    for (const tokenProperty of tokenProperties) {
+      const value = getTokenPropertyValue(tokenProperty);
+      if (!value || value === 'false') {
+        continue;
+      }
+      node[tokenProperty] = getTokenPropertyValue(tokenProperty);
+    }
+    return node;
+  }
+
+  public static createTree(payloads: Protocol.Accessibility.AXNode[]): AXNode {
+    const nodeById = new Map<string, AXNode>();
+    for (const payload of payloads) {
+      nodeById.set(payload.nodeId, new AXNode(payload));
+    }
+    for (const node of nodeById.values()) {
+      for (const childId of node.payload.childIds || []) {
+        node.children.push(nodeById.get(childId)!);
+      }
+    }
+    return nodeById.values().next().value;
+  }
+}
diff --git a/remote/test/puppeteer/src/common/AriaQueryHandler.ts b/remote/test/puppeteer/src/common/AriaQueryHandler.ts
new file mode 100644
index 0000000000..2ec86f5bf2
--- /dev/null
+++ b/remote/test/puppeteer/src/common/AriaQueryHandler.ts
@@ -0,0 +1,189 @@
+/**
+ * Copyright 2020 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import {Protocol} from 'devtools-protocol';
+import {assert} from '../util/assert.js';
+import {CDPSession} from './Connection.js';
+import {ElementHandle} from './ElementHandle.js';
+import {Frame} from './Frame.js';
+import {MAIN_WORLD, PageBinding, PUPPETEER_WORLD} from './IsolatedWorld.js';
+import {InternalQueryHandler} from './QueryHandler.js';
+
+async function queryAXTree(
+  client: CDPSession,
+  element: ElementHandle<Node>,
+  accessibleName?: string,
+  role?: string
+): Promise<Protocol.Accessibility.AXNode[]> {
+  const {nodes} = await client.send('Accessibility.queryAXTree', {
+    objectId: element.remoteObject().objectId,
+    accessibleName,
+    role,
+  });
+  const filteredNodes: Protocol.Accessibility.AXNode[] = nodes.filter(
+    (node: Protocol.Accessibility.AXNode) => {
+      return !node.role || node.role.value !== 'StaticText';
+    }
+  );
+  return filteredNodes;
+}
+
+const normalizeValue = (value: string): string => {
+  return value.replace(/ +/g, ' ').trim();
+};
+const knownAttributes = new Set(['name', 'role']);
+const attributeRegexp =
+  /\[\s*(?<attribute>\w+)\s*=\s*(?<quote>"|')(?<value>\\.|.*?(?=\k<quote>))\k<quote>\s*\]/g;
+
+type ARIAQueryOption = {name?: string; role?: string};
+function isKnownAttribute(
+  attribute: string
+): attribute is keyof ARIAQueryOption {
+  return knownAttributes.has(attribute);
+}
+
+/**
+ * The selectors consist of an accessible name to query for and optionally
+ * further aria attributes on the form `[<attribute>=<value>]`.
+ * Currently, we only support the `name` and `role` attribute.
+ * The following examples showcase how the syntax works wrt. querying:
+ *
+ * - 'title[role="heading"]' queries for elements with name 'title' and role 'heading'.
+ * - '[role="img"]' queries for elements with role 'img' and any name.
+ * - 'label' queries for elements with name 'label' and any role.
+ * - '[name=""][role="button"]' queries for elements with no name and role 'button'.
+ */
+function parseAriaSelector(selector: string): ARIAQueryOption {
+  const queryOptions: ARIAQueryOption = {};
+  const defaultName = selector.replace(
+    attributeRegexp,
+    (_, attribute: string, _quote: string, value: string) => {
+      attribute = attribute.trim();
+      assert(
+        isKnownAttribute(attribute),
+        `Unknown aria attribute "${attribute}" in selector`
+      );
+      queryOptions[attribute] = normalizeValue(value);
+      return '';
+    }
+  );
+  if (defaultName && !queryOptions.name) {
+    queryOptions.name = normalizeValue(defaultName);
+  }
+  return queryOptions;
+}
+
+const queryOneId = async (element: ElementHandle<Node>, selector: string) => {
+  const {name, role} = parseAriaSelector(selector);
+  const res = await queryAXTree(element.client, element, name, role);
+  if (!res[0] || !res[0].backendDOMNodeId) {
+    return null;
+  }
+  return res[0].backendDOMNodeId;
+};
+
+const queryOne: InternalQueryHandler['queryOne'] = async (
+  element,
+  selector
+) => {
+  const id = await queryOneId(element, selector);
+  if (!id) {
+    return null;
+  }
+  return (await element.frame.worlds[MAIN_WORLD].adoptBackendNode(
+    id
+  )) as ElementHandle<Node>;
+};
+
+const waitFor: InternalQueryHandler['waitFor'] = async (
+  elementOrFrame,
+  selector,
+  options
+) => {
+  let frame: Frame;
+  let element: ElementHandle<Node> | undefined;
+  if (elementOrFrame instanceof Frame) {
+    frame = elementOrFrame;
+  } else {
+    frame = elementOrFrame.frame;
+    element = await frame.worlds[PUPPETEER_WORLD].adoptHandle(elementOrFrame);
+  }
+  const binding: PageBinding = {
+    name: 'ariaQuerySelector',
+    pptrFunction: async (selector: string) => {
+      const id = await queryOneId(
+        element || (await frame.worlds[PUPPETEER_WORLD].document()),
+        selector
+      );
+      if (!id) {
+        return null;
+      }
+      return (await frame.worlds[PUPPETEER_WORLD].adoptBackendNode(
+        id
+      )) as ElementHandle<Node>;
+    },
+  };
+  const result = await frame.worlds[PUPPETEER_WORLD]._waitForSelectorInPage(
+    (_: Element, selector: string) => {
+      return (
+        globalThis as unknown as {
+          ariaQuerySelector(selector: string): Node | null;
+        }
+      ).ariaQuerySelector(selector);
+    },
+    element,
+    selector,
+    options,
+    binding
+  );
+  if (element) {
+    await element.dispose();
+  }
+  if (!result) {
+    return null;
+  }
+  if (!(result instanceof ElementHandle)) {
+    await result.dispose();
+    return null;
+  }
+  return result.frame.worlds[MAIN_WORLD].transferHandle(result);
+};
+
+const queryAll: InternalQueryHandler['queryAll'] = async (
+  element,
+  selector
+) => {
+  const exeCtx = element.executionContext();
+  const {name, role} = parseAriaSelector(selector);
+  const res = await queryAXTree(exeCtx._client, element, name, role);
+  const world = exeCtx._world!;
+  return Promise.all(
+    res.map(axNode => {
+      return world.adoptBackendNode(axNode.backendDOMNodeId) as Promise<
+        ElementHandle<Node>
+      >;
+    })
+  );
+};
+
+/**
+ * @internal
+ */
+export const ariaHandler: InternalQueryHandler = {
+  queryOne,
+  waitFor,
+  queryAll,
+};
diff --git a/remote/test/puppeteer/src/common/Browser.ts b/remote/test/puppeteer/src/common/Browser.ts
new file mode 100644
index 0000000000..253cfff291
--- /dev/null
+++ b/remote/test/puppeteer/src/common/Browser.ts
@@ -0,0 +1,980 @@
+/**
+ * Copyright 2017 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import {ChildProcess} from 'child_process';
+import {Protocol} from 'devtools-protocol';
+import {assert} from '../util/assert.js';
+import {CDPSession, Connection, ConnectionEmittedEvents} from './Connection.js';
+import {EventEmitter} from './EventEmitter.js';
+import {waitWithTimeout} from './util.js';
+import {Page} from './Page.js';
+import {Viewport} from './PuppeteerViewport.js';
+import {Target} from './Target.js';
+import {TaskQueue} from './TaskQueue.js';
+import {TargetManager, TargetManagerEmittedEvents} from './TargetManager.js';
+import {ChromeTargetManager} from './ChromeTargetManager.js';
+import {FirefoxTargetManager} from './FirefoxTargetManager.js';
+
+/**
+ * BrowserContext options.
+ *
+ * @public
+ */
+export interface BrowserContextOptions {
+  /**
+   * Proxy server with optional port to use for all requests.
+   * Username and password can be set in `Page.authenticate`.
+   */
+  proxyServer?: string;
+  /**
+   * Bypass the proxy for the given semi-colon-separated list of hosts.
+   */
+  proxyBypassList?: string[];
+}
+
+/**
+ * @internal
+ */
+export type BrowserCloseCallback = () => Promise<void> | void;
+
+/**
+ * @public
+ */
+export type TargetFilterCallback = (
+  target: Protocol.Target.TargetInfo
+) => boolean;
+
+/**
+ * @internal
+ */
+export type IsPageTargetCallback = (
+  target: Protocol.Target.TargetInfo
+) => boolean;
+
+const WEB_PERMISSION_TO_PROTOCOL_PERMISSION = new Map<
+  Permission,
+  Protocol.Browser.PermissionType
+>([
+  ['geolocation', 'geolocation'],
+  ['midi', 'midi'],
+  ['notifications', 'notifications'],
+  // TODO: push isn't a valid type?
+  // ['push', 'push'],
+  ['camera', 'videoCapture'],
+  ['microphone', 'audioCapture'],
+  ['background-sync', 'backgroundSync'],
+  ['ambient-light-sensor', 'sensors'],
+  ['accelerometer', 'sensors'],
+  ['gyroscope', 'sensors'],
+  ['magnetometer', 'sensors'],
+  ['accessibility-events', 'accessibilityEvents'],
+  ['clipboard-read', 'clipboardReadWrite'],
+  ['clipboard-write', 'clipboardReadWrite'],
+  ['payment-handler', 'paymentHandler'],
+  ['persistent-storage', 'durableStorage'],
+  ['idle-detection', 'idleDetection'],
+  // chrome-specific permissions we have.
+  ['midi-sysex', 'midiSysex'],
+]);
+
+/**
+ * @public
+ */
+export type Permission =
+  | 'geolocation'
+  | 'midi'
+  | 'notifications'
+  | 'camera'
+  | 'microphone'
+  | 'background-sync'
+  | 'ambient-light-sensor'
+  | 'accelerometer'
+  | 'gyroscope'
+  | 'magnetometer'
+  | 'accessibility-events'
+  | 'clipboard-read'
+  | 'clipboard-write'
+  | 'payment-handler'
+  | 'persistent-storage'
+  | 'idle-detection'
+  | 'midi-sysex';
+
+/**
+ * @public
+ */
+export interface WaitForTargetOptions {
+  /**
+   * Maximum wait time in milliseconds. Pass `0` to disable the timeout.
+   * @defaultValue 30 seconds.
+   */
+  timeout?: number;
+}
+
+/**
+ * All the events a {@link Browser | browser instance} may emit.
+ *
+ * @public
+ */
+export const enum BrowserEmittedEvents {
+  /**
+   * Emitted when Puppeteer gets disconnected from the Chromium instance. This
+   * might happen because of one of the following:
+   *
+   * - Chromium is closed or crashed
+   *
+   * - The {@link Browser.disconnect | browser.disconnect } method was called.
+   */
+  Disconnected = 'disconnected',
+
+  /**
+   * Emitted when the url of a target changes. Contains a {@link Target} instance.
+   *
+   * @remarks
+   *
+   * Note that this includes target changes in incognito browser contexts.
+   */
+  TargetChanged = 'targetchanged',
+
+  /**
+   * Emitted when a target is created, for example when a new page is opened by
+   * {@link https://developer.mozilla.org/en-US/docs/Web/API/Window/open | window.open}
+   * or by {@link Browser.newPage | browser.newPage}
+   *
+   * Contains a {@link Target} instance.
+   *
+   * @remarks
+   *
+   * Note that this includes target creations in incognito browser contexts.
+   */
+  TargetCreated = 'targetcreated',
+  /**
+   * Emitted when a target is destroyed, for example when a page is closed.
+   * Contains a {@link Target} instance.
+   *
+   * @remarks
+   *
+   * Note that this includes target destructions in incognito browser contexts.
+   */
+  TargetDestroyed = 'targetdestroyed',
+}
+
+/**
+ * A Browser is created when Puppeteer connects to a Chromium instance, either through
+ * {@link PuppeteerNode.launch} or {@link Puppeteer.connect}.
+ *
+ * @remarks
+ *
+ * The Browser class extends from Puppeteer's {@link EventEmitter} class and will
+ * emit various events which are documented in the {@link BrowserEmittedEvents} enum.
+ *
+ * @example
+ * An example of using a {@link Browser} to create a {@link Page}:
+ *
+ * ```ts
+ * const puppeteer = require('puppeteer');
+ *
+ * (async () => {
+ *   const browser = await puppeteer.launch();
+ *   const page = await browser.newPage();
+ *   await page.goto('https://example.com');
+ *   await browser.close();
+ * })();
+ * ```
+ *
+ * @example
+ * An example of disconnecting from and reconnecting to a {@link Browser}:
+ *
+ * ```ts
+ * const puppeteer = require('puppeteer');
+ *
+ * (async () => {
+ *   const browser = await puppeteer.launch();
+ *   // Store the endpoint to be able to reconnect to Chromium
+ *   const browserWSEndpoint = browser.wsEndpoint();
+ *   // Disconnect puppeteer from Chromium
+ *   browser.disconnect();
+ *
+ *   // Use the endpoint to reestablish a connection
+ *   const browser2 = await puppeteer.connect({browserWSEndpoint});
+ *   // Close Chromium
+ *   await browser2.close();
+ * })();
+ * ```
+ *
+ * @public
+ */
+export class Browser extends EventEmitter {
+  /**
+   * @internal
+   */
+  static async _create(
+    product: 'firefox' | 'chrome' | undefined,
+    connection: Connection,
+    contextIds: string[],
+    ignoreHTTPSErrors: boolean,
+    defaultViewport?: Viewport | null,
+    process?: ChildProcess,
+    closeCallback?: BrowserCloseCallback,
+    targetFilterCallback?: TargetFilterCallback,
+    isPageTargetCallback?: IsPageTargetCallback
+  ): Promise<Browser> {
+    const browser = new Browser(
+      product,
+      connection,
+      contextIds,
+      ignoreHTTPSErrors,
+      defaultViewport,
+      process,
+      closeCallback,
+      targetFilterCallback,
+      isPageTargetCallback
+    );
+    await browser._attach();
+    return browser;
+  }
+  #ignoreHTTPSErrors: boolean;
+  #defaultViewport?: Viewport | null;
+  #process?: ChildProcess;
+  #connection: Connection;
+  #closeCallback: BrowserCloseCallback;
+  #targetFilterCallback: TargetFilterCallback;
+  #isPageTargetCallback!: IsPageTargetCallback;
+  #defaultContext: BrowserContext;
+  #contexts: Map<string, BrowserContext>;
+  #screenshotTaskQueue: TaskQueue;
+  #targetManager: TargetManager;
+
+  /**
+   * @internal
+   */
+  get _targets(): Map<string, Target> {
+    return this.#targetManager.getAvailableTargets();
+  }
+
+  /**
+   * @internal
+   */
+  constructor(
+    product: 'chrome' | 'firefox' | undefined,
+    connection: Connection,
+    contextIds: string[],
+    ignoreHTTPSErrors: boolean,
+    defaultViewport?: Viewport | null,
+    process?: ChildProcess,
+    closeCallback?: BrowserCloseCallback,
+    targetFilterCallback?: TargetFilterCallback,
+    isPageTargetCallback?: IsPageTargetCallback
+  ) {
+    super();
+    product = product || 'chrome';
+    this.#ignoreHTTPSErrors = ignoreHTTPSErrors;
+    this.#defaultViewport = defaultViewport;
+    this.#process = process;
+    this.#screenshotTaskQueue = new TaskQueue();
+    this.#connection = connection;
+    this.#closeCallback = closeCallback || function (): void {};
+    this.#targetFilterCallback =
+      targetFilterCallback ||
+      ((): boolean => {
+        return true;
+      });
+    this.#setIsPageTargetCallback(isPageTargetCallback);
+    if (product === 'firefox') {
+      this.#targetManager = new FirefoxTargetManager(
+        connection,
+        this.#createTarget,
+        this.#targetFilterCallback
+      );
+    } else {
+      this.#targetManager = new ChromeTargetManager(
+        connection,
+        this.#createTarget,
+        this.#targetFilterCallback
+      );
+    }
+    this.#defaultContext = new BrowserContext(this.#connection, this);
+    this.#contexts = new Map();
+    for (const contextId of contextIds) {
+      this.#contexts.set(
+        contextId,
+        new BrowserContext(this.#connection, this, contextId)
+      );
+    }
+  }
+
+  #emitDisconnected = () => {
+    this.emit(BrowserEmittedEvents.Disconnected);
+  };
+
+  /**
+   * @internal
+   */
+  async _attach(): Promise<void> {
+    this.#connection.on(
+      ConnectionEmittedEvents.Disconnected,
+      this.#emitDisconnected
+    );
+    this.#targetManager.on(
+      TargetManagerEmittedEvents.TargetAvailable,
+      this.#onAttachedToTarget
+    );
+    this.#targetManager.on(
+      TargetManagerEmittedEvents.TargetGone,
+      this.#onDetachedFromTarget
+    );
+    this.#targetManager.on(
+      TargetManagerEmittedEvents.TargetChanged,
+      this.#onTargetChanged
+    );
+    this.#targetManager.on(
+      TargetManagerEmittedEvents.TargetDiscovered,
+      this.#onTargetDiscovered
+    );
+    await this.#targetManager.initialize();
+  }
+
+  /**
+   * @internal
+   */
+  _detach(): void {
+    this.#connection.off(
+      ConnectionEmittedEvents.Disconnected,
+      this.#emitDisconnected
+    );
+    this.#targetManager.off(
+      TargetManagerEmittedEvents.TargetAvailable,
+      this.#onAttachedToTarget
+    );
+    this.#targetManager.off(
+      TargetManagerEmittedEvents.TargetGone,
+      this.#onDetachedFromTarget
+    );
+    this.#targetManager.off(
+      TargetManagerEmittedEvents.TargetChanged,
+      this.#onTargetChanged
+    );
+    this.#targetManager.off(
+      TargetManagerEmittedEvents.TargetDiscovered,
+      this.#onTargetDiscovered
+    );
+  }
+
+  /**
+   * The spawned browser process. Returns `null` if the browser instance was created with
+   * {@link Puppeteer.connect}.
+   */
+  process(): ChildProcess | null {
+    return this.#process ?? null;
+  }
+
+  /**
+   * @internal
+   */
+  _targetManager(): TargetManager {
+    return this.#targetManager;
+  }
+
+  #setIsPageTargetCallback(isPageTargetCallback?: IsPageTargetCallback): void {
+    this.#isPageTargetCallback =
+      isPageTargetCallback ||
+      ((target: Protocol.Target.TargetInfo): boolean => {
+        return (
+          target.type === 'page' ||
+          target.type === 'background_page' ||
+          target.type === 'webview'
+        );
+      });
+  }
+
+  /**
+   * @internal
+   */
+  _getIsPageTargetCallback(): IsPageTargetCallback | undefined {
+    return this.#isPageTargetCallback;
+  }
+
+  /**
+   * Creates a new incognito browser context. This won't share cookies/cache with other
+   * browser contexts.
+   *
+   * @example
+   *
+   * ```ts
+   * (async () => {
+   *   const browser = await puppeteer.launch();
+   *   // Create a new incognito browser context.
+   *   const context = await browser.createIncognitoBrowserContext();
+   *   // Create a new page in a pristine context.
+   *   const page = await context.newPage();
+   *   // Do stuff
+   *   await page.goto('https://example.com');
+   * })();
+   * ```
+   */
+  async createIncognitoBrowserContext(
+    options: BrowserContextOptions = {}
+  ): Promise<BrowserContext> {
+    const {proxyServer, proxyBypassList} = options;
+
+    const {browserContextId} = await this.#connection.send(
+      'Target.createBrowserContext',
+      {
+        proxyServer,
+        proxyBypassList: proxyBypassList && proxyBypassList.join(','),
+      }
+    );
+    const context = new BrowserContext(
+      this.#connection,
+      this,
+      browserContextId
+    );
+    this.#contexts.set(browserContextId, context);
+    return context;
+  }
+
+  /**
+   * Returns an array of all open browser contexts. In a newly created browser, this will
+   * return a single instance of {@link BrowserContext}.
+   */
+  browserContexts(): BrowserContext[] {
+    return [this.#defaultContext, ...Array.from(this.#contexts.values())];
+  }
+
+  /**
+   * Returns the default browser context. The default browser context cannot be closed.
+   */
+  defaultBrowserContext(): BrowserContext {
+    return this.#defaultContext;
+  }
+
+  /**
+   * @internal
+   */
+  async _disposeContext(contextId?: string): Promise<void> {
+    if (!contextId) {
+      return;
+    }
+    await this.#connection.send('Target.disposeBrowserContext', {
+      browserContextId: contextId,
+    });
+    this.#contexts.delete(contextId);
+  }
+
+  #createTarget = (
+    targetInfo: Protocol.Target.TargetInfo,
+    session?: CDPSession
+  ) => {
+    const {browserContextId} = targetInfo;
+    const context =
+      browserContextId && this.#contexts.has(browserContextId)
+        ? this.#contexts.get(browserContextId)
+        : this.#defaultContext;
+
+    if (!context) {
+      throw new Error('Missing browser context');
+    }
+
+    return new Target(
+      targetInfo,
+      session,
+      context,
+      this.#targetManager,
+      (isAutoAttachEmulated: boolean) => {
+        return this.#connection._createSession(
+          targetInfo,
+          isAutoAttachEmulated
+        );
+      },
+      this.#ignoreHTTPSErrors,
+      this.#defaultViewport ?? null,
+      this.#screenshotTaskQueue,
+      this.#isPageTargetCallback
+    );
+  };
+
+  #onAttachedToTarget = async (target: Target) => {
+    if (await target._initializedPromise) {
+      this.emit(BrowserEmittedEvents.TargetCreated, target);
+      target
+        .browserContext()
+        .emit(BrowserContextEmittedEvents.TargetCreated, target);
+    }
+  };
+
+  #onDetachedFromTarget = async (target: Target): Promise<void> => {
+    target._initializedCallback(false);
+    target._closedCallback();
+    if (await target._initializedPromise) {
+      this.emit(BrowserEmittedEvents.TargetDestroyed, target);
+      target
+        .browserContext()
+        .emit(BrowserContextEmittedEvents.TargetDestroyed, target);
+    }
+  };
+
+  #onTargetChanged = ({
+    target,
+    targetInfo,
+  }: {
+    target: Target;
+    targetInfo: Protocol.Target.TargetInfo;
+  }): void => {
+    const previousURL = target.url();
+    const wasInitialized = target._isInitialized;
+    target._targetInfoChanged(targetInfo);
+    if (wasInitialized && previousURL !== target.url()) {
+      this.emit(BrowserEmittedEvents.TargetChanged, target);
+      target
+        .browserContext()
+        .emit(BrowserContextEmittedEvents.TargetChanged, target);
+    }
+  };
+
+  #onTargetDiscovered = (targetInfo: Protocol.Target.TargetInfo): void => {
+    this.emit('targetdiscovered', targetInfo);
+  };
+
+  /**
+   * The browser websocket endpoint which can be used as an argument to
+   * {@link Puppeteer.connect}.
+   *
+   * @returns The Browser websocket url.
+   *
+   * @remarks
+   *
+   * The format is `ws://${host}:${port}/devtools/browser/<id>`.
+   *
+   * You can find the `webSocketDebuggerUrl` from `http://${host}:${port}/json/version`.
+   * Learn more about the
+   * {@link https://chromedevtools.github.io/devtools-protocol | devtools protocol} and
+   * the {@link
+   * https://chromedevtools.github.io/devtools-protocol/#how-do-i-access-the-browser-target
+   * | browser endpoint}.
+   */
+  wsEndpoint(): string {
+    return this.#connection.url();
+  }
+
+  /**
+   * Promise which resolves to a new {@link Page} object. The Page is created in
+   * a default browser context.
+   */
+  async newPage(): Promise<Page> {
+    return this.#defaultContext.newPage();
+  }
+
+  /**
+   * @internal
+   */
+  async _createPageInContext(contextId?: string): Promise<Page> {
+    const {targetId} = await this.#connection.send('Target.createTarget', {
+      url: 'about:blank',
+      browserContextId: contextId || undefined,
+    });
+    const target = this.#targetManager.getAvailableTargets().get(targetId);
+    if (!target) {
+      throw new Error(`Missing target for page (id = ${targetId})`);
+    }
+    const initialized = await target._initializedPromise;
+    if (!initialized) {
+      throw new Error(`Failed to create target for page (id = ${targetId})`);
+    }
+    const page = await target.page();
+    if (!page) {
+      throw new Error(
+        `Failed to create a page for context (id = ${contextId})`
+      );
+    }
+    return page;
+  }
+
+  /**
+   * All active targets inside the Browser. In case of multiple browser contexts, returns
+   * an array with all the targets in all browser contexts.
+   */
+  targets(): Target[] {
+    return Array.from(
+      this.#targetManager.getAvailableTargets().values()
+    ).filter(target => {
+      return target._isInitialized;
+    });
+  }
+
+  /**
+   * The target associated with the browser.
+   */
+  target(): Target {
+    const browserTarget = this.targets().find(target => {
+      return target.type() === 'browser';
+    });
+    if (!browserTarget) {
+      throw new Error('Browser target is not found');
+    }
+    return browserTarget;
+  }
+
+  /**
+   * Searches for a target in all browser contexts.
+   *
+   * @param predicate - A function to be run for every target.
+   * @returns The first target found that matches the `predicate` function.
+   *
+   * @example
+   *
+   * An example of finding a target for a page opened via `window.open`:
+   *
+   * ```ts
+   * await page.evaluate(() => window.open('https://www.example.com/'));
+   * const newWindowTarget = await browser.waitForTarget(
+   *   target => target.url() === 'https://www.example.com/'
+   * );
+   * ```
+   */
+  async waitForTarget(
+    predicate: (x: Target) => boolean | Promise<boolean>,
+    options: WaitForTargetOptions = {}
+  ): Promise<Target> {
+    const {timeout = 30000} = options;
+    let resolve: (value: Target | PromiseLike<Target>) => void;
+    let isResolved = false;
+    const targetPromise = new Promise<Target>(x => {
+      return (resolve = x);
+    });
+    this.on(BrowserEmittedEvents.TargetCreated, check);
+    this.on(BrowserEmittedEvents.TargetChanged, check);
+    try {
+      this.targets().forEach(check);
+      if (!timeout) {
+        return await targetPromise;
+      }
+      return await waitWithTimeout(targetPromise, 'target', timeout);
+    } finally {
+      this.off(BrowserEmittedEvents.TargetCreated, check);
+      this.off(BrowserEmittedEvents.TargetChanged, check);
+    }
+
+    async function check(target: Target): Promise<void> {
+      if ((await predicate(target)) && !isResolved) {
+        isResolved = true;
+        resolve(target);
+      }
+    }
+  }
+
+  /**
+   * An array of all open pages inside the Browser.
+   *
+   * @remarks
+   *
+   * In case of multiple browser contexts, returns an array with all the pages in all
+   * browser contexts. Non-visible pages, such as `"background_page"`, will not be listed
+   * here. You can find them using {@link Target.page}.
+   */
+  async pages(): Promise<Page[]> {
+    const contextPages = await Promise.all(
+      this.browserContexts().map(context => {
+        return context.pages();
+      })
+    );
+    // Flatten array.
+    return contextPages.reduce((acc, x) => {
+      return acc.concat(x);
+    }, []);
+  }
+
+  /**
+   * A string representing the browser name and version.
+   *
+   * @remarks
+   *
+   * For headless Chromium, this is similar to `HeadlessChrome/61.0.3153.0`. For
+   * non-headless, this is similar to `Chrome/61.0.3153.0`.
+   *
+   * The format of browser.version() might change with future releases of Chromium.
+   */
+  async version(): Promise<string> {
+    const version = await this.#getVersion();
+    return version.product;
+  }
+
+  /**
+   * The browser's original user agent. Pages can override the browser user agent with
+   * {@link Page.setUserAgent}.
+   */
+  async userAgent(): Promise<string> {
+    const version = await this.#getVersion();
+    return version.userAgent;
+  }
+
+  /**
+   * Closes Chromium and all of its pages (if any were opened). The {@link Browser} object
+   * itself is considered to be disposed and cannot be used anymore.
+   */
+  async close(): Promise<void> {
+    await this.#closeCallback.call(null);
+    this.disconnect();
+  }
+
+  /**
+   * Disconnects Puppeteer from the browser, but leaves the Chromium process running.
+   * After calling `disconnect`, the {@link Browser} object is considered disposed and
+   * cannot be used anymore.
+   */
+  disconnect(): void {
+    this.#targetManager.dispose();
+    this.#connection.dispose();
+  }
+
+  /**
+   * Indicates that the browser is connected.
+   */
+  isConnected(): boolean {
+    return !this.#connection._closed;
+  }
+
+  #getVersion(): Promise<Protocol.Browser.GetVersionResponse> {
+    return this.#connection.send('Browser.getVersion');
+  }
+}
+/**
+ * @public
+ */
+export const enum BrowserContextEmittedEvents {
+  /**
+   * Emitted when the url of a target inside the browser context changes.
+   * Contains a {@link Target} instance.
+   */
+  TargetChanged = 'targetchanged',
+
+  /**
+   * Emitted when a target is created within the browser context, for example
+   * when a new page is opened by
+   * {@link https://developer.mozilla.org/en-US/docs/Web/API/Window/open | window.open}
+   * or by {@link BrowserContext.newPage | browserContext.newPage}
+   *
+   * Contains a {@link Target} instance.
+   */
+  TargetCreated = 'targetcreated',
+  /**
+   * Emitted when a target is destroyed within the browser context, for example
+   * when a page is closed. Contains a {@link Target} instance.
+   */
+  TargetDestroyed = 'targetdestroyed',
+}
+
+/**
+ * BrowserContexts provide a way to operate multiple independent browser
+ * sessions. When a browser is launched, it has a single BrowserContext used by
+ * default. The method {@link Browser.newPage | Browser.newPage} creates a page
+ * in the default browser context.
+ *
+ * @remarks
+ *
+ * The Browser class extends from Puppeteer's {@link EventEmitter} class and
+ * will emit various events which are documented in the
+ * {@link BrowserContextEmittedEvents} enum.
+ *
+ * If a page opens another page, e.g. with a `window.open` call, the popup will
+ * belong to the parent page's browser context.
+ *
+ * Puppeteer allows creation of "incognito" browser contexts with
+ * {@link Browser.createIncognitoBrowserContext | Browser.createIncognitoBrowserContext}
+ * method. "Incognito" browser contexts don't write any browsing data to disk.
+ *
+ * @example
+ *
+ * ```ts
+ * // Create a new incognito browser context
+ * const context = await browser.createIncognitoBrowserContext();
+ * // Create a new page inside context.
+ * const page = await context.newPage();
+ * // ... do stuff with page ...
+ * await page.goto('https://example.com');
+ * // Dispose context once it's no longer needed.
+ * await context.close();
+ * ```
+ *
+ * @public
+ */
+export class BrowserContext extends EventEmitter {
+  #connection: Connection;
+  #browser: Browser;
+  #id?: string;
+
+  /**
+   * @internal
+   */
+  constructor(connection: Connection, browser: Browser, contextId?: string) {
+    super();
+    this.#connection = connection;
+    this.#browser = browser;
+    this.#id = contextId;
+  }
+
+  /**
+   * An array of all active targets inside the browser context.
+   */
+  targets(): Target[] {
+    return this.#browser.targets().filter(target => {
+      return target.browserContext() === this;
+    });
+  }
+
+  /**
+   * This searches for a target in this specific browser context.
+   *
+   * @example
+   * An example of finding a target for a page opened via `window.open`:
+   *
+   * ```ts
+   * await page.evaluate(() => window.open('https://www.example.com/'));
+   * const newWindowTarget = await browserContext.waitForTarget(
+   *   target => target.url() === 'https://www.example.com/'
+   * );
+   * ```
+   *
+   * @param predicate - A function to be run for every target
+   * @param options - An object of options. Accepts a timout,
+   * which is the maximum wait time in milliseconds.
+   * Pass `0` to disable the timeout. Defaults to 30 seconds.
+   * @returns Promise which resolves to the first target found
+   * that matches the `predicate` function.
+   */
+  waitForTarget(
+    predicate: (x: Target) => boolean | Promise<boolean>,
+    options: {timeout?: number} = {}
+  ): Promise<Target> {
+    return this.#browser.waitForTarget(target => {
+      return target.browserContext() === this && predicate(target);
+    }, options);
+  }
+
+  /**
+   * An array of all pages inside the browser context.
+   *
+   * @returns Promise which resolves to an array of all open pages.
+   * Non visible pages, such as `"background_page"`, will not be listed here.
+   * You can find them using {@link Target.page | the target page}.
+   */
+  async pages(): Promise<Page[]> {
+    const pages = await Promise.all(
+      this.targets()
+        .filter(target => {
+          return (
+            target.type() === 'page' ||
+            (target.type() === 'other' &&
+              this.#browser._getIsPageTargetCallback()?.(
+                target._getTargetInfo()
+              ))
+          );
+        })
+        .map(target => {
+          return target.page();
+        })
+    );
+    return pages.filter((page): page is Page => {
+      return !!page;
+    });
+  }
+
+  /**
+   * Returns whether BrowserContext is incognito.
+   * The default browser context is the only non-incognito browser context.
+   *
+   * @remarks
+   * The default browser context cannot be closed.
+   */
+  isIncognito(): boolean {
+    return !!this.#id;
+  }
+
+  /**
+   * @example
+   *
+   * ```ts
+   * const context = browser.defaultBrowserContext();
+   * await context.overridePermissions('https://html5demos.com', [
+   *   'geolocation',
+   * ]);
+   * ```
+   *
+   * @param origin - The origin to grant permissions to, e.g. "https://example.com".
+   * @param permissions - An array of permissions to grant.
+   * All permissions that are not listed here will be automatically denied.
+   */
+  async overridePermissions(
+    origin: string,
+    permissions: Permission[]
+  ): Promise<void> {
+    const protocolPermissions = permissions.map(permission => {
+      const protocolPermission =
+        WEB_PERMISSION_TO_PROTOCOL_PERMISSION.get(permission);
+      if (!protocolPermission) {
+        throw new Error('Unknown permission: ' + permission);
+      }
+      return protocolPermission;
+    });
+    await this.#connection.send('Browser.grantPermissions', {
+      origin,
+      browserContextId: this.#id || undefined,
+      permissions: protocolPermissions,
+    });
+  }
+
+  /**
+   * Clears all permission overrides for the browser context.
+   *
+   * @example
+   *
+   * ```ts
+   * const context = browser.defaultBrowserContext();
+   * context.overridePermissions('https://example.com', ['clipboard-read']);
+   * // do stuff ..
+   * context.clearPermissionOverrides();
+   * ```
+   */
+  async clearPermissionOverrides(): Promise<void> {
+    await this.#connection.send('Browser.resetPermissions', {
+      browserContextId: this.#id || undefined,
+    });
+  }
+
+  /**
+   * Creates a new page in the browser context.
+   */
+  newPage(): Promise<Page> {
+    return this.#browser._createPageInContext(this.#id);
+  }
+
+  /**
+   * The browser this browser context belongs to.
+   */
+  browser(): Browser {
+    return this.#browser;
+  }
+
+  /**
+   * Closes the browser context. All the targets that belong to the browser context
+   * will be closed.
+   *
+   * @remarks
+   * Only incognito browser contexts can be closed.
+   */
+  async close(): Promise<void> {
+    assert(this.#id, 'Non-incognito profiles cannot be closed!');
+    await this.#browser._disposeContext(this.#id);
+  }
+}
diff --git a/remote/test/puppeteer/src/common/BrowserConnector.ts b/remote/test/puppeteer/src/common/BrowserConnector.ts
new file mode 100644
index 0000000000..8d65873c31
--- /dev/null
+++ b/remote/test/puppeteer/src/common/BrowserConnector.ts
@@ -0,0 +1,159 @@
+/**
+ * Copyright 2020 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import {debugError} from './util.js';
+import {isErrorLike} from '../util/ErrorLike.js';
+import {isNode} from '../environment.js';
+import {assert} from '../util/assert.js';
+import {
+  Browser,
+  IsPageTargetCallback,
+  TargetFilterCallback,
+} from './Browser.js';
+import {Connection} from './Connection.js';
+import {ConnectionTransport} from './ConnectionTransport.js';
+import {getFetch} from './fetch.js';
+import {Viewport} from './PuppeteerViewport.js';
+/**
+ * Generic browser options that can be passed when launching any browser or when
+ * connecting to an existing browser instance.
+ * @public
+ */
+export interface BrowserConnectOptions {
+  /**
+   * Whether to ignore HTTPS errors during navigation.
+   * @defaultValue false
+   */
+  ignoreHTTPSErrors?: boolean;
+  /**
+   * Sets the viewport for each page.
+   */
+  defaultViewport?: Viewport | null;
+  /**
+   * Slows down Puppeteer operations by the specified amount of milliseconds to
+   * aid debugging.
+   */
+  slowMo?: number;
+  /**
+   * Callback to decide if Puppeteer should connect to a given target or not.
+   */
+  targetFilter?: TargetFilterCallback;
+  /**
+   * @internal
+   */
+  _isPageTarget?: IsPageTargetCallback;
+}
+
+const getWebSocketTransportClass = async () => {
+  return isNode
+    ? (await import('../node/NodeWebSocketTransport.js')).NodeWebSocketTransport
+    : (await import('./BrowserWebSocketTransport.js'))
+        .BrowserWebSocketTransport;
+};
+
+/**
+ * Users should never call this directly; it's called when calling
+ * `puppeteer.connect`.
+ *
+ * @internal
+ */
+export async function _connectToBrowser(
+  options: BrowserConnectOptions & {
+    browserWSEndpoint?: string;
+    browserURL?: string;
+    transport?: ConnectionTransport;
+  }
+): Promise<Browser> {
+  const {
+    browserWSEndpoint,
+    browserURL,
+    ignoreHTTPSErrors = false,
+    defaultViewport = {width: 800, height: 600},
+    transport,
+    slowMo = 0,
+    targetFilter,
+    _isPageTarget: isPageTarget,
+  } = options;
+
+  assert(
+    Number(!!browserWSEndpoint) + Number(!!browserURL) + Number(!!transport) ===
+      1,
+    'Exactly one of browserWSEndpoint, browserURL or transport must be passed to puppeteer.connect'
+  );
+
+  let connection!: Connection;
+  if (transport) {
+    connection = new Connection('', transport, slowMo);
+  } else if (browserWSEndpoint) {
+    const WebSocketClass = await getWebSocketTransportClass();
+    const connectionTransport: ConnectionTransport =
+      await WebSocketClass.create(browserWSEndpoint);
+    connection = new Connection(browserWSEndpoint, connectionTransport, slowMo);
+  } else if (browserURL) {
+    const connectionURL = await getWSEndpoint(browserURL);
+    const WebSocketClass = await getWebSocketTransportClass();
+    const connectionTransport: ConnectionTransport =
+      await WebSocketClass.create(connectionURL);
+    connection = new Connection(connectionURL, connectionTransport, slowMo);
+  }
+  const version = await connection.send('Browser.getVersion');
+
+  const product = version.product.toLowerCase().includes('firefox')
+    ? 'firefox'
+    : 'chrome';
+
+  const {browserContextIds} = await connection.send(
+    'Target.getBrowserContexts'
+  );
+  const browser = await Browser._create(
+    product || 'chrome',
+    connection,
+    browserContextIds,
+    ignoreHTTPSErrors,
+    defaultViewport,
+    undefined,
+    () => {
+      return connection.send('Browser.close').catch(debugError);
+    },
+    targetFilter,
+    isPageTarget
+  );
+  await browser.pages();
+  return browser;
+}
+
+async function getWSEndpoint(browserURL: string): Promise<string> {
+  const endpointURL = new URL('/json/version', browserURL);
+
+  const fetch = await getFetch();
+  try {
+    const result = await fetch(endpointURL.toString(), {
+      method: 'GET',
+    });
+    if (!result.ok) {
+      throw new Error(`HTTP ${result.statusText}`);
+    }
+    const data = await result.json();
+    return data.webSocketDebuggerUrl;
+  } catch (error) {
+    if (isErrorLike(error)) {
+      error.message =
+        `Failed to fetch browser webSocket URL from ${endpointURL}: ` +
+        error.message;
+    }
+    throw error;
+  }
+}
diff --git a/remote/test/puppeteer/src/common/BrowserWebSocketTransport.ts b/remote/test/puppeteer/src/common/BrowserWebSocketTransport.ts
new file mode 100644
index 0000000000..5fe32e6526
--- /dev/null
+++ b/remote/test/puppeteer/src/common/BrowserWebSocketTransport.ts
@@ -0,0 +1,60 @@
+/**
+ * Copyright 2020 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import {ConnectionTransport} from './ConnectionTransport.js';
+
+/**
+ * @internal
+ */
+export class BrowserWebSocketTransport implements ConnectionTransport {
+  static create(url: string): Promise<BrowserWebSocketTransport> {
+    return new Promise((resolve, reject) => {
+      const ws = new WebSocket(url);
+
+      ws.addEventListener('open', () => {
+        return resolve(new BrowserWebSocketTransport(ws));
+      });
+      ws.addEventListener('error', reject);
+    });
+  }
+
+  #ws: WebSocket;
+  onmessage?: (message: string) => void;
+  onclose?: () => void;
+
+  constructor(ws: WebSocket) {
+    this.#ws = ws;
+    this.#ws.addEventListener('message', event => {
+      if (this.onmessage) {
+        this.onmessage.call(null, event.data);
+      }
+    });
+    this.#ws.addEventListener('close', () => {
+      if (this.onclose) {
+        this.onclose.call(null);
+      }
+    });
+    // Silently ignore all errors - we don't know what to do with them.
+    this.#ws.addEventListener('error', () => {});
+  }
+
+  send(message: string): void {
+    this.#ws.send(message);
+  }
+
+  close(): void {
+    this.#ws.close();
+  }
+}
diff --git a/remote/test/puppeteer/src/common/ChromeTargetManager.ts b/remote/test/puppeteer/src/common/ChromeTargetManager.ts
new file mode 100644
index 0000000000..445225edf3
--- /dev/null
+++ b/remote/test/puppeteer/src/common/ChromeTargetManager.ts
@@ -0,0 +1,411 @@
+/**
+ * Copyright 2022 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import Protocol from 'devtools-protocol';
+import {assert} from '../util/assert.js';
+import {CDPSession, Connection} from './Connection.js';
+import {EventEmitter} from './EventEmitter.js';
+import {Target} from './Target.js';
+import {debugError} from './util.js';
+import {TargetFilterCallback} from './Browser.js';
+import {
+  TargetInterceptor,
+  TargetFactory,
+  TargetManager,
+  TargetManagerEmittedEvents,
+} from './TargetManager.js';
+
+/**
+ * ChromeTargetManager uses the CDP's auto-attach mechanism to intercept
+ * new targets and allow the rest of Puppeteer to configure listeners while
+ * the target is paused.
+ *
+ * @internal
+ */
+export class ChromeTargetManager extends EventEmitter implements TargetManager {
+  #connection: Connection;
+  /**
+   * Keeps track of the following events: 'Target.targetCreated',
+   * 'Target.targetDestroyed', 'Target.targetInfoChanged'.
+   *
+   * A target becomes discovered when 'Target.targetCreated' is received.
+   * A target is removed from this map once 'Target.targetDestroyed' is
+   * received.
+   *
+   * `targetFilterCallback` has no effect on this map.
+   */
+  #discoveredTargetsByTargetId: Map<string, Protocol.Target.TargetInfo> =
+    new Map();
+  /**
+   * A target is added to this map once ChromeTargetManager has created
+   * a Target and attached at least once to it.
+   */
+  #attachedTargetsByTargetId: Map<string, Target> = new Map();
+  /**
+   *
+   * Tracks which sessions attach to which target.
+   */
+  #attachedTargetsBySessionId: Map<string, Target> = new Map();
+  /**
+   * If a target was filtered out by `targetFilterCallback`, we still receive
+   * events about it from CDP, but we don't forward them to the rest of Puppeteer.
+   */
+  #ignoredTargets = new Set<string>();
+  #targetFilterCallback: TargetFilterCallback | undefined;
+  #targetFactory: TargetFactory;
+
+  #targetInterceptors: WeakMap<CDPSession | Connection, TargetInterceptor[]> =
+    new WeakMap();
+
+  #attachedToTargetListenersBySession: WeakMap<
+    CDPSession | Connection,
+    (event: Protocol.Target.AttachedToTargetEvent) => Promise<void>
+  > = new WeakMap();
+  #detachedFromTargetListenersBySession: WeakMap<
+    CDPSession | Connection,
+    (event: Protocol.Target.DetachedFromTargetEvent) => void
+  > = new WeakMap();
+
+  #initializeCallback = () => {};
+  #initializePromise: Promise<void> = new Promise(resolve => {
+    this.#initializeCallback = resolve;
+  });
+  #targetsIdsForInit: Set<string> = new Set();
+
+  constructor(
+    connection: Connection,
+    targetFactory: TargetFactory,
+    targetFilterCallback?: TargetFilterCallback
+  ) {
+    super();
+    this.#connection = connection;
+    this.#targetFilterCallback = targetFilterCallback;
+    this.#targetFactory = targetFactory;
+
+    this.#connection.on('Target.targetCreated', this.#onTargetCreated);
+    this.#connection.on('Target.targetDestroyed', this.#onTargetDestroyed);
+    this.#connection.on('Target.targetInfoChanged', this.#onTargetInfoChanged);
+    this.#connection.on('sessiondetached', this.#onSessionDetached);
+    this.#setupAttachmentListeners(this.#connection);
+
+    // TODO: remove `as any` once the protocol definitions are updated with the
+    // next Chromium roll.
+    this.#connection
+      .send('Target.setDiscoverTargets', {
+        discover: true,
+        filter: [{type: 'tab', exclude: true}, {}],
+      } as any)
+      .then(this.#storeExistingTargetsForInit)
+      .catch(debugError);
+  }
+
+  #storeExistingTargetsForInit = () => {
+    for (const [
+      targetId,
+      targetInfo,
+    ] of this.#discoveredTargetsByTargetId.entries()) {
+      if (
+        (!this.#targetFilterCallback ||
+          this.#targetFilterCallback(targetInfo)) &&
+        targetInfo.type !== 'browser'
+      ) {
+        this.#targetsIdsForInit.add(targetId);
+      }
+    }
+  };
+
+  async initialize(): Promise<void> {
+    await this.#connection.send('Target.setAutoAttach', {
+      waitForDebuggerOnStart: true,
+      flatten: true,
+      autoAttach: true,
+    });
+    this.#finishInitializationIfReady();
+    await this.#initializePromise;
+  }
+
+  dispose(): void {
+    this.#connection.off('Target.targetCreated', this.#onTargetCreated);
+    this.#connection.off('Target.targetDestroyed', this.#onTargetDestroyed);
+    this.#connection.off('Target.targetInfoChanged', this.#onTargetInfoChanged);
+    this.#connection.off('sessiondetached', this.#onSessionDetached);
+
+    this.#removeAttachmentListeners(this.#connection);
+  }
+
+  getAvailableTargets(): Map<string, Target> {
+    return this.#attachedTargetsByTargetId;
+  }
+
+  addTargetInterceptor(
+    session: CDPSession | Connection,
+    interceptor: TargetInterceptor
+  ): void {
+    const interceptors = this.#targetInterceptors.get(session) || [];
+    interceptors.push(interceptor);
+    this.#targetInterceptors.set(session, interceptors);
+  }
+
+  removeTargetInterceptor(
+    client: CDPSession | Connection,
+    interceptor: TargetInterceptor
+  ): void {
+    const interceptors = this.#targetInterceptors.get(client) || [];
+    this.#targetInterceptors.set(
+      client,
+      interceptors.filter(currentInterceptor => {
+        return currentInterceptor !== interceptor;
+      })
+    );
+  }
+
+  #setupAttachmentListeners(session: CDPSession | Connection): void {
+    const listener = (event: Protocol.Target.AttachedToTargetEvent) => {
+      return this.#onAttachedToTarget(session, event);
+    };
+    assert(!this.#attachedToTargetListenersBySession.has(session));
+    this.#attachedToTargetListenersBySession.set(session, listener);
+    session.on('Target.attachedToTarget', listener);
+
+    const detachedListener = (
+      event: Protocol.Target.DetachedFromTargetEvent
+    ) => {
+      return this.#onDetachedFromTarget(session, event);
+    };
+    assert(!this.#detachedFromTargetListenersBySession.has(session));
+    this.#detachedFromTargetListenersBySession.set(session, detachedListener);
+    session.on('Target.detachedFromTarget', detachedListener);
+  }
+
+  #removeAttachmentListeners(session: CDPSession | Connection): void {
+    if (this.#attachedToTargetListenersBySession.has(session)) {
+      session.off(
+        'Target.attachedToTarget',
+        this.#attachedToTargetListenersBySession.get(session)!
+      );
+      this.#attachedToTargetListenersBySession.delete(session);
+    }
+
+    if (this.#detachedFromTargetListenersBySession.has(session)) {
+      session.off(
+        'Target.detachedFromTarget',
+        this.#detachedFromTargetListenersBySession.get(session)!
+      );
+      this.#detachedFromTargetListenersBySession.delete(session);
+    }
+  }
+
+  #onSessionDetached = (session: CDPSession) => {
+    this.#removeAttachmentListeners(session);
+    this.#targetInterceptors.delete(session);
+  };
+
+  #onTargetCreated = async (event: Protocol.Target.TargetCreatedEvent) => {
+    this.#discoveredTargetsByTargetId.set(
+      event.targetInfo.targetId,
+      event.targetInfo
+    );
+
+    this.emit(TargetManagerEmittedEvents.TargetDiscovered, event.targetInfo);
+
+    // The connection is already attached to the browser target implicitly,
+    // therefore, no new CDPSession is created and we have special handling
+    // here.
+    if (event.targetInfo.type === 'browser' && event.targetInfo.attached) {
+      if (this.#attachedTargetsByTargetId.has(event.targetInfo.targetId)) {
+        return;
+      }
+      const target = this.#targetFactory(event.targetInfo, undefined);
+      this.#attachedTargetsByTargetId.set(event.targetInfo.targetId, target);
+    }
+
+    if (event.targetInfo.type === 'shared_worker') {
+      // Special case (https://crbug.com/1338156): currently, shared_workers
+      // don't get auto-attached. This should be removed once the auto-attach
+      // works.
+      await this.#connection._createSession(event.targetInfo, true);
+    }
+  };
+
+  #onTargetDestroyed = (event: Protocol.Target.TargetDestroyedEvent) => {
+    const targetInfo = this.#discoveredTargetsByTargetId.get(event.targetId);
+    this.#discoveredTargetsByTargetId.delete(event.targetId);
+    this.#finishInitializationIfReady(event.targetId);
+    if (
+      targetInfo?.type === 'service_worker' &&
+      this.#attachedTargetsByTargetId.has(event.targetId)
+    ) {
+      // Special case for service workers: report TargetGone event when
+      // the worker is destroyed.
+      const target = this.#attachedTargetsByTargetId.get(event.targetId);
+      this.emit(TargetManagerEmittedEvents.TargetGone, target);
+      this.#attachedTargetsByTargetId.delete(event.targetId);
+    }
+  };
+
+  #onTargetInfoChanged = (event: Protocol.Target.TargetInfoChangedEvent) => {
+    this.#discoveredTargetsByTargetId.set(
+      event.targetInfo.targetId,
+      event.targetInfo
+    );
+
+    if (
+      this.#ignoredTargets.has(event.targetInfo.targetId) ||
+      !this.#attachedTargetsByTargetId.has(event.targetInfo.targetId) ||
+      !event.targetInfo.attached
+    ) {
+      return;
+    }
+
+    const target = this.#attachedTargetsByTargetId.get(
+      event.targetInfo.targetId
+    );
+    this.emit(TargetManagerEmittedEvents.TargetChanged, {
+      target: target!,
+      targetInfo: event.targetInfo,
+    });
+  };
+
+  #onAttachedToTarget = async (
+    parentSession: Connection | CDPSession,
+    event: Protocol.Target.AttachedToTargetEvent
+  ) => {
+    const targetInfo = event.targetInfo;
+    const session = this.#connection.session(event.sessionId);
+    if (!session) {
+      throw new Error(`Session ${event.sessionId} was not created.`);
+    }
+
+    const silentDetach = async () => {
+      await session.send('Runtime.runIfWaitingForDebugger').catch(debugError);
+      // We don't use `session.detach()` because that dispatches all commands on
+      // the connection instead of the parent session.
+      await parentSession
+        .send('Target.detachFromTarget', {
+          sessionId: session.id(),
+        })
+        .catch(debugError);
+    };
+
+    if (!this.#connection.isAutoAttached(targetInfo.targetId)) {
+      return;
+    }
+
+    // Special case for service workers: being attached to service workers will
+    // prevent them from ever being destroyed. Therefore, we silently detach
+    // from service workers unless the connection was manually created via
+    // `page.worker()`. To determine this, we use
+    // `this.#connection.isAutoAttached(targetInfo.targetId)`. In the future, we
+    // should determine if a target is auto-attached or not with the help of
+    // CDP.
+    if (
+      targetInfo.type === 'service_worker' &&
+      this.#connection.isAutoAttached(targetInfo.targetId)
+    ) {
+      this.#finishInitializationIfReady(targetInfo.targetId);
+      await silentDetach();
+      if (this.#attachedTargetsByTargetId.has(targetInfo.targetId)) {
+        return;
+      }
+      const target = this.#targetFactory(targetInfo);
+      this.#attachedTargetsByTargetId.set(targetInfo.targetId, target);
+      this.emit(TargetManagerEmittedEvents.TargetAvailable, target);
+      return;
+    }
+
+    if (this.#targetFilterCallback && !this.#targetFilterCallback(targetInfo)) {
+      this.#ignoredTargets.add(targetInfo.targetId);
+      this.#finishInitializationIfReady(targetInfo.targetId);
+      await silentDetach();
+      return;
+    }
+
+    const existingTarget = this.#attachedTargetsByTargetId.has(
+      targetInfo.targetId
+    );
+
+    const target = existingTarget
+      ? this.#attachedTargetsByTargetId.get(targetInfo.targetId)!
+      : this.#targetFactory(targetInfo, session);
+
+    this.#setupAttachmentListeners(session);
+
+    if (existingTarget) {
+      this.#attachedTargetsBySessionId.set(
+        session.id(),
+        this.#attachedTargetsByTargetId.get(targetInfo.targetId)!
+      );
+    } else {
+      this.#attachedTargetsByTargetId.set(targetInfo.targetId, target);
+      this.#attachedTargetsBySessionId.set(session.id(), target);
+    }
+
+    for (const interceptor of this.#targetInterceptors.get(parentSession) ||
+      []) {
+      if (!(parentSession instanceof Connection)) {
+        // Sanity check: if parent session is not a connection, it should be
+        // present in #attachedTargetsBySessionId.
+        assert(this.#attachedTargetsBySessionId.has(parentSession.id()));
+      }
+      await interceptor(
+        target,
+        parentSession instanceof Connection
+          ? null
+          : this.#attachedTargetsBySessionId.get(parentSession.id())!
+      );
+    }
+
+    this.#targetsIdsForInit.delete(target._targetId);
+    if (!existingTarget) {
+      this.emit(TargetManagerEmittedEvents.TargetAvailable, target);
+    }
+    this.#finishInitializationIfReady();
+
+    // TODO: the browser might be shutting down here. What do we do with the
+    // error?
+    await Promise.all([
+      session.send('Target.setAutoAttach', {
+        waitForDebuggerOnStart: true,
+        flatten: true,
+        autoAttach: true,
+      }),
+      session.send('Runtime.runIfWaitingForDebugger'),
+    ]).catch(debugError);
+  };
+
+  #finishInitializationIfReady(targetId?: string): void {
+    targetId !== undefined && this.#targetsIdsForInit.delete(targetId);
+    if (this.#targetsIdsForInit.size === 0) {
+      this.#initializeCallback();
+    }
+  }
+
+  #onDetachedFromTarget = (
+    _parentSession: Connection | CDPSession,
+    event: Protocol.Target.DetachedFromTargetEvent
+  ) => {
+    const target = this.#attachedTargetsBySessionId.get(event.sessionId);
+
+    this.#attachedTargetsBySessionId.delete(event.sessionId);
+
+    if (!target) {
+      return;
+    }
+
+    this.#attachedTargetsByTargetId.delete(target._targetId);
+    this.emit(TargetManagerEmittedEvents.TargetGone, target);
+  };
+}
diff --git a/remote/test/puppeteer/src/common/Connection.ts b/remote/test/puppeteer/src/common/Connection.ts
new file mode 100644
index 0000000000..541e225e4e
--- /dev/null
+++ b/remote/test/puppeteer/src/common/Connection.ts
@@ -0,0 +1,447 @@
+/**
+ * Copyright 2017 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import {assert} from '../util/assert.js';
+import {debug} from './Debug.js';
+const debugProtocolSend = debug('puppeteer:protocol:SEND ►');
+const debugProtocolReceive = debug('puppeteer:protocol:RECV ◀');
+
+import {Protocol} from 'devtools-protocol';
+import {ProtocolMapping} from 'devtools-protocol/types/protocol-mapping.js';
+import {ConnectionTransport} from './ConnectionTransport.js';
+import {EventEmitter} from './EventEmitter.js';
+import {ProtocolError} from './Errors.js';
+
+/**
+ * @public
+ */
+export {ConnectionTransport, ProtocolMapping};
+
+/**
+ * @public
+ */
+export interface ConnectionCallback {
+  resolve(args: unknown): void;
+  reject(args: unknown): void;
+  error: ProtocolError;
+  method: string;
+}
+
+/**
+ * Internal events that the Connection class emits.
+ *
+ * @internal
+ */
+export const ConnectionEmittedEvents = {
+  Disconnected: Symbol('Connection.Disconnected'),
+} as const;
+
+/**
+ * @public
+ */
+export class Connection extends EventEmitter {
+  #url: string;
+  #transport: ConnectionTransport;
+  #delay: number;
+  #lastId = 0;
+  #sessions: Map<string, CDPSession> = new Map();
+  #closed = false;
+  #callbacks: Map<number, ConnectionCallback> = new Map();
+  #manuallyAttached = new Set<string>();
+
+  constructor(url: string, transport: ConnectionTransport, delay = 0) {
+    super();
+    this.#url = url;
+    this.#delay = delay;
+
+    this.#transport = transport;
+    this.#transport.onmessage = this.onMessage.bind(this);
+    this.#transport.onclose = this.#onClose.bind(this);
+  }
+
+  static fromSession(session: CDPSession): Connection | undefined {
+    return session.connection();
+  }
+
+  /**
+   * @internal
+   */
+  get _closed(): boolean {
+    return this.#closed;
+  }
+
+  /**
+   * @internal
+   */
+  get _sessions(): Map<string, CDPSession> {
+    return this.#sessions;
+  }
+
+  /**
+   * @param sessionId - The session id
+   * @returns The current CDP session if it exists
+   */
+  session(sessionId: string): CDPSession | null {
+    return this.#sessions.get(sessionId) || null;
+  }
+
+  url(): string {
+    return this.#url;
+  }
+
+  send<T extends keyof ProtocolMapping.Commands>(
+    method: T,
+    ...paramArgs: ProtocolMapping.Commands[T]['paramsType']
+  ): Promise<ProtocolMapping.Commands[T]['returnType']> {
+    // There is only ever 1 param arg passed, but the Protocol defines it as an
+    // array of 0 or 1 items See this comment:
+    // https://github.com/ChromeDevTools/devtools-protocol/pull/113#issuecomment-412603285
+    // which explains why the protocol defines the params this way for better
+    // type-inference.
+    // So now we check if there are any params or not and deal with them accordingly.
+    const params = paramArgs.length ? paramArgs[0] : undefined;
+    const id = this._rawSend({method, params});
+    return new Promise((resolve, reject) => {
+      this.#callbacks.set(id, {
+        resolve,
+        reject,
+        error: new ProtocolError(),
+        method,
+      });
+    });
+  }
+
+  /**
+   * @internal
+   */
+  _rawSend(message: Record<string, unknown>): number {
+    const id = ++this.#lastId;
+    const stringifiedMessage = JSON.stringify(Object.assign({}, message, {id}));
+    debugProtocolSend(stringifiedMessage);
+    this.#transport.send(stringifiedMessage);
+    return id;
+  }
+
+  /**
+   * @internal
+   */
+  protected async onMessage(message: string): Promise<void> {
+    if (this.#delay) {
+      await new Promise(f => {
+        return setTimeout(f, this.#delay);
+      });
+    }
+    debugProtocolReceive(message);
+    const object = JSON.parse(message);
+    if (object.method === 'Target.attachedToTarget') {
+      const sessionId = object.params.sessionId;
+      const session = new CDPSession(
+        this,
+        object.params.targetInfo.type,
+        sessionId
+      );
+      this.#sessions.set(sessionId, session);
+      this.emit('sessionattached', session);
+      const parentSession = this.#sessions.get(object.sessionId);
+      if (parentSession) {
+        parentSession.emit('sessionattached', session);
+      }
+    } else if (object.method === 'Target.detachedFromTarget') {
+      const session = this.#sessions.get(object.params.sessionId);
+      if (session) {
+        session._onClosed();
+        this.#sessions.delete(object.params.sessionId);
+        this.emit('sessiondetached', session);
+        const parentSession = this.#sessions.get(object.sessionId);
+        if (parentSession) {
+          parentSession.emit('sessiondetached', session);
+        }
+      }
+    }
+    if (object.sessionId) {
+      const session = this.#sessions.get(object.sessionId);
+      if (session) {
+        session._onMessage(object);
+      }
+    } else if (object.id) {
+      const callback = this.#callbacks.get(object.id);
+      // Callbacks could be all rejected if someone has called `.dispose()`.
+      if (callback) {
+        this.#callbacks.delete(object.id);
+        if (object.error) {
+          callback.reject(
+            createProtocolError(callback.error, callback.method, object)
+          );
+        } else {
+          callback.resolve(object.result);
+        }
+      }
+    } else {
+      this.emit(object.method, object.params);
+    }
+  }
+
+  #onClose(): void {
+    if (this.#closed) {
+      return;
+    }
+    this.#closed = true;
+    this.#transport.onmessage = undefined;
+    this.#transport.onclose = undefined;
+    for (const callback of this.#callbacks.values()) {
+      callback.reject(
+        rewriteError(
+          callback.error,
+          `Protocol error (${callback.method}): Target closed.`
+        )
+      );
+    }
+    this.#callbacks.clear();
+    for (const session of this.#sessions.values()) {
+      session._onClosed();
+    }
+    this.#sessions.clear();
+    this.emit(ConnectionEmittedEvents.Disconnected);
+  }
+
+  dispose(): void {
+    this.#onClose();
+    this.#transport.close();
+  }
+
+  /**
+   * @internal
+   */
+  isAutoAttached(targetId: string): boolean {
+    return !this.#manuallyAttached.has(targetId);
+  }
+
+  /**
+   * @internal
+   */
+  async _createSession(
+    targetInfo: Protocol.Target.TargetInfo,
+    isAutoAttachEmulated = true
+  ): Promise<CDPSession> {
+    if (!isAutoAttachEmulated) {
+      this.#manuallyAttached.add(targetInfo.targetId);
+    }
+    const {sessionId} = await this.send('Target.attachToTarget', {
+      targetId: targetInfo.targetId,
+      flatten: true,
+    });
+    this.#manuallyAttached.delete(targetInfo.targetId);
+    const session = this.#sessions.get(sessionId);
+    if (!session) {
+      throw new Error('CDPSession creation failed.');
+    }
+    return session;
+  }
+
+  /**
+   * @param targetInfo - The target info
+   * @returns The CDP session that is created
+   */
+  async createSession(
+    targetInfo: Protocol.Target.TargetInfo
+  ): Promise<CDPSession> {
+    return await this._createSession(targetInfo, false);
+  }
+}
+
+/**
+ * @public
+ */
+export interface CDPSessionOnMessageObject {
+  id?: number;
+  method: string;
+  params: Record<string, unknown>;
+  error: {message: string; data: any; code: number};
+  result?: any;
+}
+
+/**
+ * Internal events that the CDPSession class emits.
+ *
+ * @internal
+ */
+export const CDPSessionEmittedEvents = {
+  Disconnected: Symbol('CDPSession.Disconnected'),
+} as const;
+
+/**
+ * The `CDPSession` instances are used to talk raw Chrome Devtools Protocol.
+ *
+ * @remarks
+ *
+ * Protocol methods can be called with {@link CDPSession.send} method and protocol
+ * events can be subscribed to with `CDPSession.on` method.
+ *
+ * Useful links: {@link https://chromedevtools.github.io/devtools-protocol/ | DevTools Protocol Viewer}
+ * and {@link https://github.com/aslushnikov/getting-started-with-cdp/blob/HEAD/README.md | Getting Started with DevTools Protocol}.
+ *
+ * @example
+ *
+ * ```ts
+ * const client = await page.target().createCDPSession();
+ * await client.send('Animation.enable');
+ * client.on('Animation.animationCreated', () =>
+ *   console.log('Animation created!')
+ * );
+ * const response = await client.send('Animation.getPlaybackRate');
+ * console.log('playback rate is ' + response.playbackRate);
+ * await client.send('Animation.setPlaybackRate', {
+ *   playbackRate: response.playbackRate / 2,
+ * });
+ * ```
+ *
+ * @public
+ */
+export class CDPSession extends EventEmitter {
+  #sessionId: string;
+  #targetType: string;
+  #callbacks: Map<number, ConnectionCallback> = new Map();
+  #connection?: Connection;
+
+  /**
+   * @internal
+   */
+  constructor(connection: Connection, targetType: string, sessionId: string) {
+    super();
+    this.#connection = connection;
+    this.#targetType = targetType;
+    this.#sessionId = sessionId;
+  }
+
+  connection(): Connection | undefined {
+    return this.#connection;
+  }
+
+  send<T extends keyof ProtocolMapping.Commands>(
+    method: T,
+    ...paramArgs: ProtocolMapping.Commands[T]['paramsType']
+  ): Promise<ProtocolMapping.Commands[T]['returnType']> {
+    if (!this.#connection) {
+      return Promise.reject(
+        new Error(
+          `Protocol error (${method}): Session closed. Most likely the ${
+            this.#targetType
+          } has been closed.`
+        )
+      );
+    }
+
+    // See the comment in Connection#send explaining why we do this.
+    const params = paramArgs.length ? paramArgs[0] : undefined;
+
+    const id = this.#connection._rawSend({
+      sessionId: this.#sessionId,
+      method,
+      params,
+    });
+
+    return new Promise((resolve, reject) => {
+      this.#callbacks.set(id, {
+        resolve,
+        reject,
+        error: new ProtocolError(),
+        method,
+      });
+    });
+  }
+
+  /**
+   * @internal
+   */
+  _onMessage(object: CDPSessionOnMessageObject): void {
+    const callback = object.id ? this.#callbacks.get(object.id) : undefined;
+    if (object.id && callback) {
+      this.#callbacks.delete(object.id);
+      if (object.error) {
+        callback.reject(
+          createProtocolError(callback.error, callback.method, object)
+        );
+      } else {
+        callback.resolve(object.result);
+      }
+    } else {
+      assert(!object.id);
+      this.emit(object.method, object.params);
+    }
+  }
+
+  /**
+   * Detaches the cdpSession from the target. Once detached, the cdpSession object
+   * won't emit any events and can't be used to send messages.
+   */
+  async detach(): Promise<void> {
+    if (!this.#connection) {
+      throw new Error(
+        `Session already detached. Most likely the ${
+          this.#targetType
+        } has been closed.`
+      );
+    }
+    await this.#connection.send('Target.detachFromTarget', {
+      sessionId: this.#sessionId,
+    });
+  }
+
+  /**
+   * @internal
+   */
+  _onClosed(): void {
+    for (const callback of this.#callbacks.values()) {
+      callback.reject(
+        rewriteError(
+          callback.error,
+          `Protocol error (${callback.method}): Target closed.`
+        )
+      );
+    }
+    this.#callbacks.clear();
+    this.#connection = undefined;
+    this.emit(CDPSessionEmittedEvents.Disconnected);
+  }
+
+  /**
+   * Returns the session's id.
+   */
+  id(): string {
+    return this.#sessionId;
+  }
+}
+
+function createProtocolError(
+  error: ProtocolError,
+  method: string,
+  object: {error: {message: string; data: any; code: number}}
+): Error {
+  let message = `Protocol error (${method}): ${object.error.message}`;
+  if ('data' in object.error) {
+    message += ` ${object.error.data}`;
+  }
+  return rewriteError(error, message, object.error.message);
+}
+
+function rewriteError(
+  error: ProtocolError,
+  message: string,
+  originalMessage?: string
+): Error {
+  error.message = message;
+  error.originalMessage = originalMessage ?? error.originalMessage;
+  return error;
+}
diff --git a/remote/test/puppeteer/src/common/ConnectionTransport.ts b/remote/test/puppeteer/src/common/ConnectionTransport.ts
new file mode 100644
index 0000000000..753379fd56
--- /dev/null
+++ b/remote/test/puppeteer/src/common/ConnectionTransport.ts
@@ -0,0 +1,25 @@
+/**
+ * Copyright 2020 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * @public
+ */
+export interface ConnectionTransport {
+  send(message: string): void;
+  close(): void;
+  onmessage?: (message: string) => void;
+  onclose?: () => void;
+}
diff --git a/remote/test/puppeteer/src/common/ConsoleMessage.ts b/remote/test/puppeteer/src/common/ConsoleMessage.ts
new file mode 100644
index 0000000000..4616eea6dd
--- /dev/null
+++ b/remote/test/puppeteer/src/common/ConsoleMessage.ts
@@ -0,0 +1,123 @@
+/**
+ * Copyright 2020 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import {JSHandle} from './JSHandle.js';
+
+/**
+ * @public
+ */
+export interface ConsoleMessageLocation {
+  /**
+   * URL of the resource if known or `undefined` otherwise.
+   */
+  url?: string;
+
+  /**
+   * 0-based line number in the resource if known or `undefined` otherwise.
+   */
+  lineNumber?: number;
+
+  /**
+   * 0-based column number in the resource if known or `undefined` otherwise.
+   */
+  columnNumber?: number;
+}
+
+/**
+ * The supported types for console messages.
+ * @public
+ */
+export type ConsoleMessageType =
+  | 'log'
+  | 'debug'
+  | 'info'
+  | 'error'
+  | 'warning'
+  | 'dir'
+  | 'dirxml'
+  | 'table'
+  | 'trace'
+  | 'clear'
+  | 'startGroup'
+  | 'startGroupCollapsed'
+  | 'endGroup'
+  | 'assert'
+  | 'profile'
+  | 'profileEnd'
+  | 'count'
+  | 'timeEnd'
+  | 'verbose';
+
+/**
+ * ConsoleMessage objects are dispatched by page via the 'console' event.
+ * @public
+ */
+export class ConsoleMessage {
+  #type: ConsoleMessageType;
+  #text: string;
+  #args: JSHandle[];
+  #stackTraceLocations: ConsoleMessageLocation[];
+
+  /**
+   * @public
+   */
+  constructor(
+    type: ConsoleMessageType,
+    text: string,
+    args: JSHandle[],
+    stackTraceLocations: ConsoleMessageLocation[]
+  ) {
+    this.#type = type;
+    this.#text = text;
+    this.#args = args;
+    this.#stackTraceLocations = stackTraceLocations;
+  }
+
+  /**
+   * @returns The type of the console message.
+   */
+  type(): ConsoleMessageType {
+    return this.#type;
+  }
+
+  /**
+   * @returns The text of the console message.
+   */
+  text(): string {
+    return this.#text;
+  }
+
+  /**
+   * @returns An array of arguments passed to the console.
+   */
+  args(): JSHandle[] {
+    return this.#args;
+  }
+
+  /**
+   * @returns The location of the console message.
+   */
+  location(): ConsoleMessageLocation {
+    return this.#stackTraceLocations[0] ?? {};
+  }
+
+  /**
+   * @returns The array of locations on the stack of the console message.
+   */
+  stackTrace(): ConsoleMessageLocation[] {
+    return this.#stackTraceLocations;
+  }
+}
diff --git a/remote/test/puppeteer/src/common/Coverage.ts b/remote/test/puppeteer/src/common/Coverage.ts
new file mode 100644
index 0000000000..a75a772a69
--- /dev/null
+++ b/remote/test/puppeteer/src/common/Coverage.ts
@@ -0,0 +1,489 @@
+/**
+ * Copyright 2017 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import {assert} from '../util/assert.js';
+import {addEventListener, debugError, PuppeteerEventListener} from './util.js';
+import {Protocol} from 'devtools-protocol';
+import {CDPSession} from './Connection.js';
+
+import {EVALUATION_SCRIPT_URL} from './ExecutionContext.js';
+import {removeEventListeners} from './util.js';
+
+/**
+ * @internal
+ */
+export {PuppeteerEventListener};
+
+/**
+ * The CoverageEntry class represents one entry of the coverage report.
+ * @public
+ */
+export interface CoverageEntry {
+  /**
+   * The URL of the style sheet or script.
+   */
+  url: string;
+  /**
+   * The content of the style sheet or script.
+   */
+  text: string;
+  /**
+   * The covered range as start and end positions.
+   */
+  ranges: Array<{start: number; end: number}>;
+}
+
+/**
+ * The CoverageEntry class for JavaScript
+ * @public
+ */
+export interface JSCoverageEntry extends CoverageEntry {
+  /**
+   * Raw V8 script coverage entry.
+   */
+  rawScriptCoverage?: Protocol.Profiler.ScriptCoverage;
+}
+
+/**
+ * Set of configurable options for JS coverage.
+ * @public
+ */
+export interface JSCoverageOptions {
+  /**
+   * Whether to reset coverage on every navigation.
+   */
+  resetOnNavigation?: boolean;
+  /**
+   * Whether anonymous scripts generated by the page should be reported.
+   */
+  reportAnonymousScripts?: boolean;
+  /**
+   * Whether the result includes raw V8 script coverage entries.
+   */
+  includeRawScriptCoverage?: boolean;
+}
+
+/**
+ * Set of configurable options for CSS coverage.
+ * @public
+ */
+export interface CSSCoverageOptions {
+  /**
+   * Whether to reset coverage on every navigation.
+   */
+  resetOnNavigation?: boolean;
+}
+
+/**
+ * The Coverage class provides methods to gathers information about parts of
+ * JavaScript and CSS that were used by the page.
+ *
+ * @remarks
+ * To output coverage in a form consumable by {@link https://github.com/istanbuljs | Istanbul},
+ * see {@link https://github.com/istanbuljs/puppeteer-to-istanbul | puppeteer-to-istanbul}.
+ *
+ * @example
+ * An example of using JavaScript and CSS coverage to get percentage of initially
+ * executed code:
+ *
+ * ```ts
+ * // Enable both JavaScript and CSS coverage
+ * await Promise.all([
+ *   page.coverage.startJSCoverage(),
+ *   page.coverage.startCSSCoverage(),
+ * ]);
+ * // Navigate to page
+ * await page.goto('https://example.com');
+ * // Disable both JavaScript and CSS coverage
+ * const [jsCoverage, cssCoverage] = await Promise.all([
+ *   page.coverage.stopJSCoverage(),
+ *   page.coverage.stopCSSCoverage(),
+ * ]);
+ * let totalBytes = 0;
+ * let usedBytes = 0;
+ * const coverage = [...jsCoverage, ...cssCoverage];
+ * for (const entry of coverage) {
+ *   totalBytes += entry.text.length;
+ *   for (const range of entry.ranges) usedBytes += range.end - range.start - 1;
+ * }
+ * console.log(`Bytes used: ${(usedBytes / totalBytes) * 100}%`);
+ * ```
+ *
+ * @public
+ */
+export class Coverage {
+  #jsCoverage: JSCoverage;
+  #cssCoverage: CSSCoverage;
+
+  constructor(client: CDPSession) {
+    this.#jsCoverage = new JSCoverage(client);
+    this.#cssCoverage = new CSSCoverage(client);
+  }
+
+  /**
+   * @param options - Set of configurable options for coverage defaults to
+   * `resetOnNavigation : true, reportAnonymousScripts : false`
+   * @returns Promise that resolves when coverage is started.
+   *
+   * @remarks
+   * Anonymous scripts are ones that don't have an associated url. These are
+   * scripts that are dynamically created on the page using `eval` or
+   * `new Function`. If `reportAnonymousScripts` is set to `true`, anonymous
+   * scripts will have `pptr://__puppeteer_evaluation_script__` as their URL.
+   */
+  async startJSCoverage(options: JSCoverageOptions = {}): Promise<void> {
+    return await this.#jsCoverage.start(options);
+  }
+
+  /**
+   * @returns Promise that resolves to the array of coverage reports for
+   * all scripts.
+   *
+   * @remarks
+   * JavaScript Coverage doesn't include anonymous scripts by default.
+   * However, scripts with sourceURLs are reported.
+   */
+  async stopJSCoverage(): Promise<JSCoverageEntry[]> {
+    return await this.#jsCoverage.stop();
+  }
+
+  /**
+   * @param options - Set of configurable options for coverage, defaults to
+   * `resetOnNavigation : true`
+   * @returns Promise that resolves when coverage is started.
+   */
+  async startCSSCoverage(options: CSSCoverageOptions = {}): Promise<void> {
+    return await this.#cssCoverage.start(options);
+  }
+
+  /**
+   * @returns Promise that resolves to the array of coverage reports
+   * for all stylesheets.
+   * @remarks
+   * CSS Coverage doesn't include dynamically injected style tags
+   * without sourceURLs.
+   */
+  async stopCSSCoverage(): Promise<CoverageEntry[]> {
+    return await this.#cssCoverage.stop();
+  }
+}
+
+/**
+ * @public
+ */
+export class JSCoverage {
+  #client: CDPSession;
+  #enabled = false;
+  #scriptURLs = new Map<string, string>();
+  #scriptSources = new Map<string, string>();
+  #eventListeners: PuppeteerEventListener[] = [];
+  #resetOnNavigation = false;
+  #reportAnonymousScripts = false;
+  #includeRawScriptCoverage = false;
+
+  constructor(client: CDPSession) {
+    this.#client = client;
+  }
+
+  async start(
+    options: {
+      resetOnNavigation?: boolean;
+      reportAnonymousScripts?: boolean;
+      includeRawScriptCoverage?: boolean;
+    } = {}
+  ): Promise<void> {
+    assert(!this.#enabled, 'JSCoverage is already enabled');
+    const {
+      resetOnNavigation = true,
+      reportAnonymousScripts = false,
+      includeRawScriptCoverage = false,
+    } = options;
+    this.#resetOnNavigation = resetOnNavigation;
+    this.#reportAnonymousScripts = reportAnonymousScripts;
+    this.#includeRawScriptCoverage = includeRawScriptCoverage;
+    this.#enabled = true;
+    this.#scriptURLs.clear();
+    this.#scriptSources.clear();
+    this.#eventListeners = [
+      addEventListener(
+        this.#client,
+        'Debugger.scriptParsed',
+        this.#onScriptParsed.bind(this)
+      ),
+      addEventListener(
+        this.#client,
+        'Runtime.executionContextsCleared',
+        this.#onExecutionContextsCleared.bind(this)
+      ),
+    ];
+    await Promise.all([
+      this.#client.send('Profiler.enable'),
+      this.#client.send('Profiler.startPreciseCoverage', {
+        callCount: this.#includeRawScriptCoverage,
+        detailed: true,
+      }),
+      this.#client.send('Debugger.enable'),
+      this.#client.send('Debugger.setSkipAllPauses', {skip: true}),
+    ]);
+  }
+
+  #onExecutionContextsCleared(): void {
+    if (!this.#resetOnNavigation) {
+      return;
+    }
+    this.#scriptURLs.clear();
+    this.#scriptSources.clear();
+  }
+
+  async #onScriptParsed(
+    event: Protocol.Debugger.ScriptParsedEvent
+  ): Promise<void> {
+    // Ignore puppeteer-injected scripts
+    if (event.url === EVALUATION_SCRIPT_URL) {
+      return;
+    }
+    // Ignore other anonymous scripts unless the reportAnonymousScripts option is true.
+    if (!event.url && !this.#reportAnonymousScripts) {
+      return;
+    }
+    try {
+      const response = await this.#client.send('Debugger.getScriptSource', {
+        scriptId: event.scriptId,
+      });
+      this.#scriptURLs.set(event.scriptId, event.url);
+      this.#scriptSources.set(event.scriptId, response.scriptSource);
+    } catch (error) {
+      // This might happen if the page has already navigated away.
+      debugError(error);
+    }
+  }
+
+  async stop(): Promise<JSCoverageEntry[]> {
+    assert(this.#enabled, 'JSCoverage is not enabled');
+    this.#enabled = false;
+
+    const result = await Promise.all([
+      this.#client.send('Profiler.takePreciseCoverage'),
+      this.#client.send('Profiler.stopPreciseCoverage'),
+      this.#client.send('Profiler.disable'),
+      this.#client.send('Debugger.disable'),
+    ]);
+
+    removeEventListeners(this.#eventListeners);
+
+    const coverage = [];
+    const profileResponse = result[0];
+
+    for (const entry of profileResponse.result) {
+      let url = this.#scriptURLs.get(entry.scriptId);
+      if (!url && this.#reportAnonymousScripts) {
+        url = 'debugger://VM' + entry.scriptId;
+      }
+      const text = this.#scriptSources.get(entry.scriptId);
+      if (text === undefined || url === undefined) {
+        continue;
+      }
+      const flattenRanges = [];
+      for (const func of entry.functions) {
+        flattenRanges.push(...func.ranges);
+      }
+      const ranges = convertToDisjointRanges(flattenRanges);
+      if (!this.#includeRawScriptCoverage) {
+        coverage.push({url, ranges, text});
+      } else {
+        coverage.push({url, ranges, text, rawScriptCoverage: entry});
+      }
+    }
+    return coverage;
+  }
+}
+
+/**
+ * @public
+ */
+export class CSSCoverage {
+  #client: CDPSession;
+  #enabled = false;
+  #stylesheetURLs = new Map<string, string>();
+  #stylesheetSources = new Map<string, string>();
+  #eventListeners: PuppeteerEventListener[] = [];
+  #resetOnNavigation = false;
+
+  constructor(client: CDPSession) {
+    this.#client = client;
+  }
+
+  async start(options: {resetOnNavigation?: boolean} = {}): Promise<void> {
+    assert(!this.#enabled, 'CSSCoverage is already enabled');
+    const {resetOnNavigation = true} = options;
+    this.#resetOnNavigation = resetOnNavigation;
+    this.#enabled = true;
+    this.#stylesheetURLs.clear();
+    this.#stylesheetSources.clear();
+    this.#eventListeners = [
+      addEventListener(
+        this.#client,
+        'CSS.styleSheetAdded',
+        this.#onStyleSheet.bind(this)
+      ),
+      addEventListener(
+        this.#client,
+        'Runtime.executionContextsCleared',
+        this.#onExecutionContextsCleared.bind(this)
+      ),
+    ];
+    await Promise.all([
+      this.#client.send('DOM.enable'),
+      this.#client.send('CSS.enable'),
+      this.#client.send('CSS.startRuleUsageTracking'),
+    ]);
+  }
+
+  #onExecutionContextsCleared(): void {
+    if (!this.#resetOnNavigation) {
+      return;
+    }
+    this.#stylesheetURLs.clear();
+    this.#stylesheetSources.clear();
+  }
+
+  async #onStyleSheet(event: Protocol.CSS.StyleSheetAddedEvent): Promise<void> {
+    const header = event.header;
+    // Ignore anonymous scripts
+    if (!header.sourceURL) {
+      return;
+    }
+    try {
+      const response = await this.#client.send('CSS.getStyleSheetText', {
+        styleSheetId: header.styleSheetId,
+      });
+      this.#stylesheetURLs.set(header.styleSheetId, header.sourceURL);
+      this.#stylesheetSources.set(header.styleSheetId, response.text);
+    } catch (error) {
+      // This might happen if the page has already navigated away.
+      debugError(error);
+    }
+  }
+
+  async stop(): Promise<CoverageEntry[]> {
+    assert(this.#enabled, 'CSSCoverage is not enabled');
+    this.#enabled = false;
+    const ruleTrackingResponse = await this.#client.send(
+      'CSS.stopRuleUsageTracking'
+    );
+    await Promise.all([
+      this.#client.send('CSS.disable'),
+      this.#client.send('DOM.disable'),
+    ]);
+    removeEventListeners(this.#eventListeners);
+
+    // aggregate by styleSheetId
+    const styleSheetIdToCoverage = new Map();
+    for (const entry of ruleTrackingResponse.ruleUsage) {
+      let ranges = styleSheetIdToCoverage.get(entry.styleSheetId);
+      if (!ranges) {
+        ranges = [];
+        styleSheetIdToCoverage.set(entry.styleSheetId, ranges);
+      }
+      ranges.push({
+        startOffset: entry.startOffset,
+        endOffset: entry.endOffset,
+        count: entry.used ? 1 : 0,
+      });
+    }
+
+    const coverage: CoverageEntry[] = [];
+    for (const styleSheetId of this.#stylesheetURLs.keys()) {
+      const url = this.#stylesheetURLs.get(styleSheetId);
+      assert(
+        typeof url !== 'undefined',
+        `Stylesheet URL is undefined (styleSheetId=${styleSheetId})`
+      );
+      const text = this.#stylesheetSources.get(styleSheetId);
+      assert(
+        typeof text !== 'undefined',
+        `Stylesheet text is undefined (styleSheetId=${styleSheetId})`
+      );
+      const ranges = convertToDisjointRanges(
+        styleSheetIdToCoverage.get(styleSheetId) || []
+      );
+      coverage.push({url, ranges, text});
+    }
+
+    return coverage;
+  }
+}
+
+function convertToDisjointRanges(
+  nestedRanges: Array<{startOffset: number; endOffset: number; count: number}>
+): Array<{start: number; end: number}> {
+  const points = [];
+  for (const range of nestedRanges) {
+    points.push({offset: range.startOffset, type: 0, range});
+    points.push({offset: range.endOffset, type: 1, range});
+  }
+  // Sort points to form a valid parenthesis sequence.
+  points.sort((a, b) => {
+    // Sort with increasing offsets.
+    if (a.offset !== b.offset) {
+      return a.offset - b.offset;
+    }
+    // All "end" points should go before "start" points.
+    if (a.type !== b.type) {
+      return b.type - a.type;
+    }
+    const aLength = a.range.endOffset - a.range.startOffset;
+    const bLength = b.range.endOffset - b.range.startOffset;
+    // For two "start" points, the one with longer range goes first.
+    if (a.type === 0) {
+      return bLength - aLength;
+    }
+    // For two "end" points, the one with shorter range goes first.
+    return aLength - bLength;
+  });
+
+  const hitCountStack = [];
+  const results: Array<{
+    start: number;
+    end: number;
+  }> = [];
+  let lastOffset = 0;
+  // Run scanning line to intersect all ranges.
+  for (const point of points) {
+    if (
+      hitCountStack.length &&
+      lastOffset < point.offset &&
+      hitCountStack[hitCountStack.length - 1]! > 0
+    ) {
+      const lastResult = results[results.length - 1];
+      if (lastResult && lastResult.end === lastOffset) {
+        lastResult.end = point.offset;
+      } else {
+        results.push({start: lastOffset, end: point.offset});
+      }
+    }
+    lastOffset = point.offset;
+    if (point.type === 0) {
+      hitCountStack.push(point.range.count);
+    } else {
+      hitCountStack.pop();
+    }
+  }
+  // Filter out empty ranges.
+  return results.filter(range => {
+    return range.end - range.start > 0;
+  });
+}
diff --git a/remote/test/puppeteer/src/common/Debug.ts b/remote/test/puppeteer/src/common/Debug.ts
new file mode 100644
index 0000000000..425b7c305a
--- /dev/null
+++ b/remote/test/puppeteer/src/common/Debug.ts
@@ -0,0 +1,109 @@
+/**
+ * Copyright 2020 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import {isNode} from '../environment.js';
+
+declare global {
+  // eslint-disable-next-line no-var
+  var __PUPPETEER_DEBUG: string;
+}
+
+/**
+ * @internal
+ */
+let debugModule: typeof import('debug') | null = null;
+/**
+ * @internal
+ */
+export async function importDebug(): Promise<typeof import('debug')> {
+  if (!debugModule) {
+    debugModule = (await import('debug')).default;
+  }
+  return debugModule;
+}
+
+/**
+ * A debug function that can be used in any environment.
+ *
+ * @remarks
+ * If used in Node, it falls back to the
+ * {@link https://www.npmjs.com/package/debug | debug module}. In the browser it
+ * uses `console.log`.
+ *
+ * In Node, use the `DEBUG` environment variable to control logging:
+ *
+ * ```
+ * DEBUG=* // logs all channels
+ * DEBUG=foo // logs the `foo` channel
+ * DEBUG=foo* // logs any channels starting with `foo`
+ * ```
+ *
+ * In the browser, set `window.__PUPPETEER_DEBUG` to a string:
+ *
+ * ```
+ * window.__PUPPETEER_DEBUG='*'; // logs all channels
+ * window.__PUPPETEER_DEBUG='foo'; // logs the `foo` channel
+ * window.__PUPPETEER_DEBUG='foo*'; // logs any channels starting with `foo`
+ * ```
+ *
+ * @example
+ *
+ * ```
+ * const log = debug('Page');
+ *
+ * log('new page created')
+ * // logs "Page: new page created"
+ * ```
+ *
+ * @param prefix - this will be prefixed to each log.
+ * @returns a function that can be called to log to that debug channel.
+ *
+ * @internal
+ */
+export const debug = (prefix: string): ((...args: unknown[]) => void) => {
+  if (isNode) {
+    return async (...logArgs: unknown[]) => {
+      (await importDebug())(prefix)(logArgs);
+    };
+  }
+
+  return (...logArgs: unknown[]): void => {
+    const debugLevel = (globalThis as any).__PUPPETEER_DEBUG;
+    if (!debugLevel) {
+      return;
+    }
+
+    const everythingShouldBeLogged = debugLevel === '*';
+
+    const prefixMatchesDebugLevel =
+      everythingShouldBeLogged ||
+      /**
+       * If the debug level is `foo*`, that means we match any prefix that
+       * starts with `foo`. If the level is `foo`, we match only the prefix
+       * `foo`.
+       */
+      (debugLevel.endsWith('*')
+        ? prefix.startsWith(debugLevel)
+        : prefix === debugLevel);
+
+    if (!prefixMatchesDebugLevel) {
+      return;
+    }
+
+    // eslint-disable-next-line no-console
+    console.log(`${prefix}:`, ...logArgs);
+  };
+};
diff --git a/remote/test/puppeteer/src/common/DeviceDescriptors.ts b/remote/test/puppeteer/src/common/DeviceDescriptors.ts
new file mode 100644
index 0000000000..58cd9dde4c
--- /dev/null
+++ b/remote/test/puppeteer/src/common/DeviceDescriptors.ts
@@ -0,0 +1,1565 @@
+/**
+ * Copyright 2017 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * @public
+ */
+export interface Device {
+  name: string;
+  userAgent: string;
+  viewport: {
+    width: number;
+    height: number;
+    deviceScaleFactor: number;
+    isMobile: boolean;
+    hasTouch: boolean;
+    isLandscape: boolean;
+  };
+}
+
+const deviceArray: Device[] = [
+  {
+    name: 'Blackberry PlayBook',
+    userAgent:
+      'Mozilla/5.0 (PlayBook; U; RIM Tablet OS 2.1.0; en-US) AppleWebKit/536.2+ (KHTML like Gecko) Version/7.2.1.0 Safari/536.2+',
+    viewport: {
+      width: 600,
+      height: 1024,
+      deviceScaleFactor: 1,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: false,
+    },
+  },
+  {
+    name: 'Blackberry PlayBook landscape',
+    userAgent:
+      'Mozilla/5.0 (PlayBook; U; RIM Tablet OS 2.1.0; en-US) AppleWebKit/536.2+ (KHTML like Gecko) Version/7.2.1.0 Safari/536.2+',
+    viewport: {
+      width: 1024,
+      height: 600,
+      deviceScaleFactor: 1,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: true,
+    },
+  },
+  {
+    name: 'BlackBerry Z30',
+    userAgent:
+      'Mozilla/5.0 (BB10; Touch) AppleWebKit/537.10+ (KHTML, like Gecko) Version/10.0.9.2372 Mobile Safari/537.10+',
+    viewport: {
+      width: 360,
+      height: 640,
+      deviceScaleFactor: 2,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: false,
+    },
+  },
+  {
+    name: 'BlackBerry Z30 landscape',
+    userAgent:
+      'Mozilla/5.0 (BB10; Touch) AppleWebKit/537.10+ (KHTML, like Gecko) Version/10.0.9.2372 Mobile Safari/537.10+',
+    viewport: {
+      width: 640,
+      height: 360,
+      deviceScaleFactor: 2,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: true,
+    },
+  },
+  {
+    name: 'Galaxy Note 3',
+    userAgent:
+      'Mozilla/5.0 (Linux; U; Android 4.3; en-us; SM-N900T Build/JSS15J) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30',
+    viewport: {
+      width: 360,
+      height: 640,
+      deviceScaleFactor: 3,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: false,
+    },
+  },
+  {
+    name: 'Galaxy Note 3 landscape',
+    userAgent:
+      'Mozilla/5.0 (Linux; U; Android 4.3; en-us; SM-N900T Build/JSS15J) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30',
+    viewport: {
+      width: 640,
+      height: 360,
+      deviceScaleFactor: 3,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: true,
+    },
+  },
+  {
+    name: 'Galaxy Note II',
+    userAgent:
+      'Mozilla/5.0 (Linux; U; Android 4.1; en-us; GT-N7100 Build/JRO03C) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30',
+    viewport: {
+      width: 360,
+      height: 640,
+      deviceScaleFactor: 2,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: false,
+    },
+  },
+  {
+    name: 'Galaxy Note II landscape',
+    userAgent:
+      'Mozilla/5.0 (Linux; U; Android 4.1; en-us; GT-N7100 Build/JRO03C) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30',
+    viewport: {
+      width: 640,
+      height: 360,
+      deviceScaleFactor: 2,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: true,
+    },
+  },
+  {
+    name: 'Galaxy S III',
+    userAgent:
+      'Mozilla/5.0 (Linux; U; Android 4.0; en-us; GT-I9300 Build/IMM76D) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30',
+    viewport: {
+      width: 360,
+      height: 640,
+      deviceScaleFactor: 2,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: false,
+    },
+  },
+  {
+    name: 'Galaxy S III landscape',
+    userAgent:
+      'Mozilla/5.0 (Linux; U; Android 4.0; en-us; GT-I9300 Build/IMM76D) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30',
+    viewport: {
+      width: 640,
+      height: 360,
+      deviceScaleFactor: 2,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: true,
+    },
+  },
+  {
+    name: 'Galaxy S5',
+    userAgent:
+      'Mozilla/5.0 (Linux; Android 5.0; SM-G900P Build/LRX21T) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3765.0 Mobile Safari/537.36',
+    viewport: {
+      width: 360,
+      height: 640,
+      deviceScaleFactor: 3,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: false,
+    },
+  },
+  {
+    name: 'Galaxy S5 landscape',
+    userAgent:
+      'Mozilla/5.0 (Linux; Android 5.0; SM-G900P Build/LRX21T) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3765.0 Mobile Safari/537.36',
+    viewport: {
+      width: 640,
+      height: 360,
+      deviceScaleFactor: 3,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: true,
+    },
+  },
+  {
+    name: 'Galaxy S8',
+    userAgent:
+      'Mozilla/5.0 (Linux; Android 7.0; SM-G950U Build/NRD90M) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/62.0.3202.84 Mobile Safari/537.36',
+    viewport: {
+      width: 360,
+      height: 740,
+      deviceScaleFactor: 3,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: false,
+    },
+  },
+  {
+    name: 'Galaxy S8 landscape',
+    userAgent:
+      'Mozilla/5.0 (Linux; Android 7.0; SM-G950U Build/NRD90M) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/62.0.3202.84 Mobile Safari/537.36',
+    viewport: {
+      width: 740,
+      height: 360,
+      deviceScaleFactor: 3,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: true,
+    },
+  },
+  {
+    name: 'Galaxy S9+',
+    userAgent:
+      'Mozilla/5.0 (Linux; Android 8.0.0; SM-G965U Build/R16NW) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.111 Mobile Safari/537.36',
+    viewport: {
+      width: 320,
+      height: 658,
+      deviceScaleFactor: 4.5,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: false,
+    },
+  },
+  {
+    name: 'Galaxy S9+ landscape',
+    userAgent:
+      'Mozilla/5.0 (Linux; Android 8.0.0; SM-G965U Build/R16NW) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.111 Mobile Safari/537.36',
+    viewport: {
+      width: 658,
+      height: 320,
+      deviceScaleFactor: 4.5,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: true,
+    },
+  },
+  {
+    name: 'Galaxy Tab S4',
+    userAgent:
+      'Mozilla/5.0 (Linux; Android 8.1.0; SM-T837A) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.80 Safari/537.36',
+    viewport: {
+      width: 712,
+      height: 1138,
+      deviceScaleFactor: 2.25,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: false,
+    },
+  },
+  {
+    name: 'Galaxy Tab S4 landscape',
+    userAgent:
+      'Mozilla/5.0 (Linux; Android 8.1.0; SM-T837A) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.80 Safari/537.36',
+    viewport: {
+      width: 1138,
+      height: 712,
+      deviceScaleFactor: 2.25,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: true,
+    },
+  },
+  {
+    name: 'iPad',
+    userAgent:
+      'Mozilla/5.0 (iPad; CPU OS 11_0 like Mac OS X) AppleWebKit/604.1.34 (KHTML, like Gecko) Version/11.0 Mobile/15A5341f Safari/604.1',
+    viewport: {
+      width: 768,
+      height: 1024,
+      deviceScaleFactor: 2,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: false,
+    },
+  },
+  {
+    name: 'iPad landscape',
+    userAgent:
+      'Mozilla/5.0 (iPad; CPU OS 11_0 like Mac OS X) AppleWebKit/604.1.34 (KHTML, like Gecko) Version/11.0 Mobile/15A5341f Safari/604.1',
+    viewport: {
+      width: 1024,
+      height: 768,
+      deviceScaleFactor: 2,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: true,
+    },
+  },
+  {
+    name: 'iPad (gen 6)',
+    userAgent:
+      'Mozilla/5.0 (iPad; CPU OS 12_2 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.4 Mobile/15E148 Safari/604.1',
+    viewport: {
+      width: 768,
+      height: 1024,
+      deviceScaleFactor: 2,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: false,
+    },
+  },
+  {
+    name: 'iPad (gen 6) landscape',
+    userAgent:
+      'Mozilla/5.0 (iPad; CPU OS 12_2 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.4 Mobile/15E148 Safari/604.1',
+    viewport: {
+      width: 1024,
+      height: 768,
+      deviceScaleFactor: 2,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: true,
+    },
+  },
+  {
+    name: 'iPad (gen 7)',
+    userAgent:
+      'Mozilla/5.0 (iPad; CPU OS 12_2 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.4 Mobile/15E148 Safari/604.1',
+    viewport: {
+      width: 810,
+      height: 1080,
+      deviceScaleFactor: 2,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: false,
+    },
+  },
+  {
+    name: 'iPad (gen 7) landscape',
+    userAgent:
+      'Mozilla/5.0 (iPad; CPU OS 12_2 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.4 Mobile/15E148 Safari/604.1',
+    viewport: {
+      width: 1080,
+      height: 810,
+      deviceScaleFactor: 2,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: true,
+    },
+  },
+  {
+    name: 'iPad Mini',
+    userAgent:
+      'Mozilla/5.0 (iPad; CPU OS 11_0 like Mac OS X) AppleWebKit/604.1.34 (KHTML, like Gecko) Version/11.0 Mobile/15A5341f Safari/604.1',
+    viewport: {
+      width: 768,
+      height: 1024,
+      deviceScaleFactor: 2,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: false,
+    },
+  },
+  {
+    name: 'iPad Mini landscape',
+    userAgent:
+      'Mozilla/5.0 (iPad; CPU OS 11_0 like Mac OS X) AppleWebKit/604.1.34 (KHTML, like Gecko) Version/11.0 Mobile/15A5341f Safari/604.1',
+    viewport: {
+      width: 1024,
+      height: 768,
+      deviceScaleFactor: 2,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: true,
+    },
+  },
+  {
+    name: 'iPad Pro',
+    userAgent:
+      'Mozilla/5.0 (iPad; CPU OS 11_0 like Mac OS X) AppleWebKit/604.1.34 (KHTML, like Gecko) Version/11.0 Mobile/15A5341f Safari/604.1',
+    viewport: {
+      width: 1024,
+      height: 1366,
+      deviceScaleFactor: 2,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: false,
+    },
+  },
+  {
+    name: 'iPad Pro landscape',
+    userAgent:
+      'Mozilla/5.0 (iPad; CPU OS 11_0 like Mac OS X) AppleWebKit/604.1.34 (KHTML, like Gecko) Version/11.0 Mobile/15A5341f Safari/604.1',
+    viewport: {
+      width: 1366,
+      height: 1024,
+      deviceScaleFactor: 2,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: true,
+    },
+  },
+  {
+    name: 'iPad Pro 11',
+    userAgent:
+      'Mozilla/5.0 (iPad; CPU OS 12_2 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.4 Mobile/15E148 Safari/604.1',
+    viewport: {
+      width: 834,
+      height: 1194,
+      deviceScaleFactor: 2,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: false,
+    },
+  },
+  {
+    name: 'iPad Pro 11 landscape',
+    userAgent:
+      'Mozilla/5.0 (iPad; CPU OS 12_2 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.4 Mobile/15E148 Safari/604.1',
+    viewport: {
+      width: 1194,
+      height: 834,
+      deviceScaleFactor: 2,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: true,
+    },
+  },
+  {
+    name: 'iPhone 4',
+    userAgent:
+      'Mozilla/5.0 (iPhone; CPU iPhone OS 7_1_2 like Mac OS X) AppleWebKit/537.51.2 (KHTML, like Gecko) Version/7.0 Mobile/11D257 Safari/9537.53',
+    viewport: {
+      width: 320,
+      height: 480,
+      deviceScaleFactor: 2,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: false,
+    },
+  },
+  {
+    name: 'iPhone 4 landscape',
+    userAgent:
+      'Mozilla/5.0 (iPhone; CPU iPhone OS 7_1_2 like Mac OS X) AppleWebKit/537.51.2 (KHTML, like Gecko) Version/7.0 Mobile/11D257 Safari/9537.53',
+    viewport: {
+      width: 480,
+      height: 320,
+      deviceScaleFactor: 2,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: true,
+    },
+  },
+  {
+    name: 'iPhone 5',
+    userAgent:
+      'Mozilla/5.0 (iPhone; CPU iPhone OS 10_3_1 like Mac OS X) AppleWebKit/603.1.30 (KHTML, like Gecko) Version/10.0 Mobile/14E304 Safari/602.1',
+    viewport: {
+      width: 320,
+      height: 568,
+      deviceScaleFactor: 2,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: false,
+    },
+  },
+  {
+    name: 'iPhone 5 landscape',
+    userAgent:
+      'Mozilla/5.0 (iPhone; CPU iPhone OS 10_3_1 like Mac OS X) AppleWebKit/603.1.30 (KHTML, like Gecko) Version/10.0 Mobile/14E304 Safari/602.1',
+    viewport: {
+      width: 568,
+      height: 320,
+      deviceScaleFactor: 2,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: true,
+    },
+  },
+  {
+    name: 'iPhone 6',
+    userAgent:
+      'Mozilla/5.0 (iPhone; CPU iPhone OS 11_0 like Mac OS X) AppleWebKit/604.1.38 (KHTML, like Gecko) Version/11.0 Mobile/15A372 Safari/604.1',
+    viewport: {
+      width: 375,
+      height: 667,
+      deviceScaleFactor: 2,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: false,
+    },
+  },
+  {
+    name: 'iPhone 6 landscape',
+    userAgent:
+      'Mozilla/5.0 (iPhone; CPU iPhone OS 11_0 like Mac OS X) AppleWebKit/604.1.38 (KHTML, like Gecko) Version/11.0 Mobile/15A372 Safari/604.1',
+    viewport: {
+      width: 667,
+      height: 375,
+      deviceScaleFactor: 2,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: true,
+    },
+  },
+  {
+    name: 'iPhone 6 Plus',
+    userAgent:
+      'Mozilla/5.0 (iPhone; CPU iPhone OS 11_0 like Mac OS X) AppleWebKit/604.1.38 (KHTML, like Gecko) Version/11.0 Mobile/15A372 Safari/604.1',
+    viewport: {
+      width: 414,
+      height: 736,
+      deviceScaleFactor: 3,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: false,
+    },
+  },
+  {
+    name: 'iPhone 6 Plus landscape',
+    userAgent:
+      'Mozilla/5.0 (iPhone; CPU iPhone OS 11_0 like Mac OS X) AppleWebKit/604.1.38 (KHTML, like Gecko) Version/11.0 Mobile/15A372 Safari/604.1',
+    viewport: {
+      width: 736,
+      height: 414,
+      deviceScaleFactor: 3,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: true,
+    },
+  },
+  {
+    name: 'iPhone 7',
+    userAgent:
+      'Mozilla/5.0 (iPhone; CPU iPhone OS 11_0 like Mac OS X) AppleWebKit/604.1.38 (KHTML, like Gecko) Version/11.0 Mobile/15A372 Safari/604.1',
+    viewport: {
+      width: 375,
+      height: 667,
+      deviceScaleFactor: 2,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: false,
+    },
+  },
+  {
+    name: 'iPhone 7 landscape',
+    userAgent:
+      'Mozilla/5.0 (iPhone; CPU iPhone OS 11_0 like Mac OS X) AppleWebKit/604.1.38 (KHTML, like Gecko) Version/11.0 Mobile/15A372 Safari/604.1',
+    viewport: {
+      width: 667,
+      height: 375,
+      deviceScaleFactor: 2,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: true,
+    },
+  },
+  {
+    name: 'iPhone 7 Plus',
+    userAgent:
+      'Mozilla/5.0 (iPhone; CPU iPhone OS 11_0 like Mac OS X) AppleWebKit/604.1.38 (KHTML, like Gecko) Version/11.0 Mobile/15A372 Safari/604.1',
+    viewport: {
+      width: 414,
+      height: 736,
+      deviceScaleFactor: 3,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: false,
+    },
+  },
+  {
+    name: 'iPhone 7 Plus landscape',
+    userAgent:
+      'Mozilla/5.0 (iPhone; CPU iPhone OS 11_0 like Mac OS X) AppleWebKit/604.1.38 (KHTML, like Gecko) Version/11.0 Mobile/15A372 Safari/604.1',
+    viewport: {
+      width: 736,
+      height: 414,
+      deviceScaleFactor: 3,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: true,
+    },
+  },
+  {
+    name: 'iPhone 8',
+    userAgent:
+      'Mozilla/5.0 (iPhone; CPU iPhone OS 11_0 like Mac OS X) AppleWebKit/604.1.38 (KHTML, like Gecko) Version/11.0 Mobile/15A372 Safari/604.1',
+    viewport: {
+      width: 375,
+      height: 667,
+      deviceScaleFactor: 2,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: false,
+    },
+  },
+  {
+    name: 'iPhone 8 landscape',
+    userAgent:
+      'Mozilla/5.0 (iPhone; CPU iPhone OS 11_0 like Mac OS X) AppleWebKit/604.1.38 (KHTML, like Gecko) Version/11.0 Mobile/15A372 Safari/604.1',
+    viewport: {
+      width: 667,
+      height: 375,
+      deviceScaleFactor: 2,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: true,
+    },
+  },
+  {
+    name: 'iPhone 8 Plus',
+    userAgent:
+      'Mozilla/5.0 (iPhone; CPU iPhone OS 11_0 like Mac OS X) AppleWebKit/604.1.38 (KHTML, like Gecko) Version/11.0 Mobile/15A372 Safari/604.1',
+    viewport: {
+      width: 414,
+      height: 736,
+      deviceScaleFactor: 3,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: false,
+    },
+  },
+  {
+    name: 'iPhone 8 Plus landscape',
+    userAgent:
+      'Mozilla/5.0 (iPhone; CPU iPhone OS 11_0 like Mac OS X) AppleWebKit/604.1.38 (KHTML, like Gecko) Version/11.0 Mobile/15A372 Safari/604.1',
+    viewport: {
+      width: 736,
+      height: 414,
+      deviceScaleFactor: 3,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: true,
+    },
+  },
+  {
+    name: 'iPhone SE',
+    userAgent:
+      'Mozilla/5.0 (iPhone; CPU iPhone OS 10_3_1 like Mac OS X) AppleWebKit/603.1.30 (KHTML, like Gecko) Version/10.0 Mobile/14E304 Safari/602.1',
+    viewport: {
+      width: 320,
+      height: 568,
+      deviceScaleFactor: 2,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: false,
+    },
+  },
+  {
+    name: 'iPhone SE landscape',
+    userAgent:
+      'Mozilla/5.0 (iPhone; CPU iPhone OS 10_3_1 like Mac OS X) AppleWebKit/603.1.30 (KHTML, like Gecko) Version/10.0 Mobile/14E304 Safari/602.1',
+    viewport: {
+      width: 568,
+      height: 320,
+      deviceScaleFactor: 2,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: true,
+    },
+  },
+  {
+    name: 'iPhone X',
+    userAgent:
+      'Mozilla/5.0 (iPhone; CPU iPhone OS 11_0 like Mac OS X) AppleWebKit/604.1.38 (KHTML, like Gecko) Version/11.0 Mobile/15A372 Safari/604.1',
+    viewport: {
+      width: 375,
+      height: 812,
+      deviceScaleFactor: 3,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: false,
+    },
+  },
+  {
+    name: 'iPhone X landscape',
+    userAgent:
+      'Mozilla/5.0 (iPhone; CPU iPhone OS 11_0 like Mac OS X) AppleWebKit/604.1.38 (KHTML, like Gecko) Version/11.0 Mobile/15A372 Safari/604.1',
+    viewport: {
+      width: 812,
+      height: 375,
+      deviceScaleFactor: 3,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: true,
+    },
+  },
+  {
+    name: 'iPhone XR',
+    userAgent:
+      'Mozilla/5.0 (iPhone; CPU iPhone OS 12_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/12.0 Mobile/15E148 Safari/604.1',
+    viewport: {
+      width: 414,
+      height: 896,
+      deviceScaleFactor: 3,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: false,
+    },
+  },
+  {
+    name: 'iPhone XR landscape',
+    userAgent:
+      'Mozilla/5.0 (iPhone; CPU iPhone OS 12_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/12.0 Mobile/15E148 Safari/604.1',
+    viewport: {
+      width: 896,
+      height: 414,
+      deviceScaleFactor: 3,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: true,
+    },
+  },
+  {
+    name: 'iPhone 11',
+    userAgent:
+      'Mozilla/5.0 (iPhone; CPU iPhone OS 13_7 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.1 Mobile/15E148 Safari/604.1',
+    viewport: {
+      width: 414,
+      height: 828,
+      deviceScaleFactor: 2,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: false,
+    },
+  },
+  {
+    name: 'iPhone 11 landscape',
+    userAgent:
+      'Mozilla/5.0 (iPhone; CPU iPhone OS 13_7 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.1 Mobile/15E148 Safari/604.1',
+    viewport: {
+      width: 828,
+      height: 414,
+      deviceScaleFactor: 2,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: true,
+    },
+  },
+  {
+    name: 'iPhone 11 Pro',
+    userAgent:
+      'Mozilla/5.0 (iPhone; CPU iPhone OS 13_7 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.1 Mobile/15E148 Safari/604.1',
+    viewport: {
+      width: 375,
+      height: 812,
+      deviceScaleFactor: 3,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: false,
+    },
+  },
+  {
+    name: 'iPhone 11 Pro landscape',
+    userAgent:
+      'Mozilla/5.0 (iPhone; CPU iPhone OS 13_7 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.1 Mobile/15E148 Safari/604.1',
+    viewport: {
+      width: 812,
+      height: 375,
+      deviceScaleFactor: 3,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: true,
+    },
+  },
+  {
+    name: 'iPhone 11 Pro Max',
+    userAgent:
+      'Mozilla/5.0 (iPhone; CPU iPhone OS 13_7 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.1 Mobile/15E148 Safari/604.1',
+    viewport: {
+      width: 414,
+      height: 896,
+      deviceScaleFactor: 3,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: false,
+    },
+  },
+  {
+    name: 'iPhone 11 Pro Max landscape',
+    userAgent:
+      'Mozilla/5.0 (iPhone; CPU iPhone OS 13_7 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.1 Mobile/15E148 Safari/604.1',
+    viewport: {
+      width: 896,
+      height: 414,
+      deviceScaleFactor: 3,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: true,
+    },
+  },
+  {
+    name: 'iPhone 12',
+    userAgent:
+      'Mozilla/5.0 (iPhone; CPU iPhone OS 14_4 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.4 Mobile/15E148 Safari/604.1',
+    viewport: {
+      width: 390,
+      height: 844,
+      deviceScaleFactor: 3,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: false,
+    },
+  },
+  {
+    name: 'iPhone 12 landscape',
+    userAgent:
+      'Mozilla/5.0 (iPhone; CPU iPhone OS 14_4 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.4 Mobile/15E148 Safari/604.1',
+    viewport: {
+      width: 844,
+      height: 390,
+      deviceScaleFactor: 3,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: true,
+    },
+  },
+  {
+    name: 'iPhone 12 Pro',
+    userAgent:
+      'Mozilla/5.0 (iPhone; CPU iPhone OS 14_4 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.4 Mobile/15E148 Safari/604.1',
+    viewport: {
+      width: 390,
+      height: 844,
+      deviceScaleFactor: 3,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: false,
+    },
+  },
+  {
+    name: 'iPhone 12 Pro landscape',
+    userAgent:
+      'Mozilla/5.0 (iPhone; CPU iPhone OS 14_4 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.4 Mobile/15E148 Safari/604.1',
+    viewport: {
+      width: 844,
+      height: 390,
+      deviceScaleFactor: 3,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: true,
+    },
+  },
+  {
+    name: 'iPhone 12 Pro Max',
+    userAgent:
+      'Mozilla/5.0 (iPhone; CPU iPhone OS 14_4 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.4 Mobile/15E148 Safari/604.1',
+    viewport: {
+      width: 428,
+      height: 926,
+      deviceScaleFactor: 3,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: false,
+    },
+  },
+  {
+    name: 'iPhone 12 Pro Max landscape',
+    userAgent:
+      'Mozilla/5.0 (iPhone; CPU iPhone OS 14_4 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.4 Mobile/15E148 Safari/604.1',
+    viewport: {
+      width: 926,
+      height: 428,
+      deviceScaleFactor: 3,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: true,
+    },
+  },
+  {
+    name: 'iPhone 12 Mini',
+    userAgent:
+      'Mozilla/5.0 (iPhone; CPU iPhone OS 14_4 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.4 Mobile/15E148 Safari/604.1',
+    viewport: {
+      width: 375,
+      height: 812,
+      deviceScaleFactor: 3,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: false,
+    },
+  },
+  {
+    name: 'iPhone 12 Mini landscape',
+    userAgent:
+      'Mozilla/5.0 (iPhone; CPU iPhone OS 14_4 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.4 Mobile/15E148 Safari/604.1',
+    viewport: {
+      width: 812,
+      height: 375,
+      deviceScaleFactor: 3,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: true,
+    },
+  },
+  {
+    name: 'iPhone 13',
+    userAgent:
+      'Mozilla/5.0 (iPhone; CPU iPhone OS 15_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.4 Mobile/15E148 Safari/604.1',
+    viewport: {
+      width: 390,
+      height: 844,
+      deviceScaleFactor: 3,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: false,
+    },
+  },
+  {
+    name: 'iPhone 13 landscape',
+    userAgent:
+      'Mozilla/5.0 (iPhone; CPU iPhone OS 15_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.4 Mobile/15E148 Safari/604.1',
+    viewport: {
+      width: 844,
+      height: 390,
+      deviceScaleFactor: 3,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: true,
+    },
+  },
+  {
+    name: 'iPhone 13 Pro',
+    userAgent:
+      'Mozilla/5.0 (iPhone; CPU iPhone OS 15_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.4 Mobile/15E148 Safari/604.1',
+    viewport: {
+      width: 390,
+      height: 844,
+      deviceScaleFactor: 3,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: false,
+    },
+  },
+  {
+    name: 'iPhone 13 Pro landscape',
+    userAgent:
+      'Mozilla/5.0 (iPhone; CPU iPhone OS 15_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.4 Mobile/15E148 Safari/604.1',
+    viewport: {
+      width: 844,
+      height: 390,
+      deviceScaleFactor: 3,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: true,
+    },
+  },
+  {
+    name: 'iPhone 13 Pro Max',
+    userAgent:
+      'Mozilla/5.0 (iPhone; CPU iPhone OS 15_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.4 Mobile/15E148 Safari/604.1',
+    viewport: {
+      width: 428,
+      height: 926,
+      deviceScaleFactor: 3,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: false,
+    },
+  },
+  {
+    name: 'iPhone 13 Pro Max landscape',
+    userAgent:
+      'Mozilla/5.0 (iPhone; CPU iPhone OS 15_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.4 Mobile/15E148 Safari/604.1',
+    viewport: {
+      width: 926,
+      height: 428,
+      deviceScaleFactor: 3,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: true,
+    },
+  },
+  {
+    name: 'iPhone 13 Mini',
+    userAgent:
+      'Mozilla/5.0 (iPhone; CPU iPhone OS 15_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.4 Mobile/15E148 Safari/604.1',
+    viewport: {
+      width: 375,
+      height: 812,
+      deviceScaleFactor: 3,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: false,
+    },
+  },
+  {
+    name: 'iPhone 13 Mini landscape',
+    userAgent:
+      'Mozilla/5.0 (iPhone; CPU iPhone OS 15_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.4 Mobile/15E148 Safari/604.1',
+    viewport: {
+      width: 812,
+      height: 375,
+      deviceScaleFactor: 3,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: true,
+    },
+  },
+  {
+    name: 'JioPhone 2',
+    userAgent:
+      'Mozilla/5.0 (Mobile; LYF/F300B/LYF-F300B-001-01-15-130718-i;Android; rv:48.0) Gecko/48.0 Firefox/48.0 KAIOS/2.5',
+    viewport: {
+      width: 240,
+      height: 320,
+      deviceScaleFactor: 1,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: false,
+    },
+  },
+  {
+    name: 'JioPhone 2 landscape',
+    userAgent:
+      'Mozilla/5.0 (Mobile; LYF/F300B/LYF-F300B-001-01-15-130718-i;Android; rv:48.0) Gecko/48.0 Firefox/48.0 KAIOS/2.5',
+    viewport: {
+      width: 320,
+      height: 240,
+      deviceScaleFactor: 1,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: true,
+    },
+  },
+  {
+    name: 'Kindle Fire HDX',
+    userAgent:
+      'Mozilla/5.0 (Linux; U; en-us; KFAPWI Build/JDQ39) AppleWebKit/535.19 (KHTML, like Gecko) Silk/3.13 Safari/535.19 Silk-Accelerated=true',
+    viewport: {
+      width: 800,
+      height: 1280,
+      deviceScaleFactor: 2,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: false,
+    },
+  },
+  {
+    name: 'Kindle Fire HDX landscape',
+    userAgent:
+      'Mozilla/5.0 (Linux; U; en-us; KFAPWI Build/JDQ39) AppleWebKit/535.19 (KHTML, like Gecko) Silk/3.13 Safari/535.19 Silk-Accelerated=true',
+    viewport: {
+      width: 1280,
+      height: 800,
+      deviceScaleFactor: 2,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: true,
+    },
+  },
+  {
+    name: 'LG Optimus L70',
+    userAgent:
+      'Mozilla/5.0 (Linux; U; Android 4.4.2; en-us; LGMS323 Build/KOT49I.MS32310c) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/75.0.3765.0 Mobile Safari/537.36',
+    viewport: {
+      width: 384,
+      height: 640,
+      deviceScaleFactor: 1.25,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: false,
+    },
+  },
+  {
+    name: 'LG Optimus L70 landscape',
+    userAgent:
+      'Mozilla/5.0 (Linux; U; Android 4.4.2; en-us; LGMS323 Build/KOT49I.MS32310c) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/75.0.3765.0 Mobile Safari/537.36',
+    viewport: {
+      width: 640,
+      height: 384,
+      deviceScaleFactor: 1.25,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: true,
+    },
+  },
+  {
+    name: 'Microsoft Lumia 550',
+    userAgent:
+      'Mozilla/5.0 (Windows Phone 10.0; Android 4.2.1; Microsoft; Lumia 550) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/46.0.2486.0 Mobile Safari/537.36 Edge/14.14263',
+    viewport: {
+      width: 640,
+      height: 360,
+      deviceScaleFactor: 2,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: false,
+    },
+  },
+  {
+    name: 'Microsoft Lumia 950',
+    userAgent:
+      'Mozilla/5.0 (Windows Phone 10.0; Android 4.2.1; Microsoft; Lumia 950) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/46.0.2486.0 Mobile Safari/537.36 Edge/14.14263',
+    viewport: {
+      width: 360,
+      height: 640,
+      deviceScaleFactor: 4,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: false,
+    },
+  },
+  {
+    name: 'Microsoft Lumia 950 landscape',
+    userAgent:
+      'Mozilla/5.0 (Windows Phone 10.0; Android 4.2.1; Microsoft; Lumia 950) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/46.0.2486.0 Mobile Safari/537.36 Edge/14.14263',
+    viewport: {
+      width: 640,
+      height: 360,
+      deviceScaleFactor: 4,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: true,
+    },
+  },
+  {
+    name: 'Nexus 10',
+    userAgent:
+      'Mozilla/5.0 (Linux; Android 6.0.1; Nexus 10 Build/MOB31T) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3765.0 Safari/537.36',
+    viewport: {
+      width: 800,
+      height: 1280,
+      deviceScaleFactor: 2,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: false,
+    },
+  },
+  {
+    name: 'Nexus 10 landscape',
+    userAgent:
+      'Mozilla/5.0 (Linux; Android 6.0.1; Nexus 10 Build/MOB31T) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3765.0 Safari/537.36',
+    viewport: {
+      width: 1280,
+      height: 800,
+      deviceScaleFactor: 2,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: true,
+    },
+  },
+  {
+    name: 'Nexus 4',
+    userAgent:
+      'Mozilla/5.0 (Linux; Android 4.4.2; Nexus 4 Build/KOT49H) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3765.0 Mobile Safari/537.36',
+    viewport: {
+      width: 384,
+      height: 640,
+      deviceScaleFactor: 2,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: false,
+    },
+  },
+  {
+    name: 'Nexus 4 landscape',
+    userAgent:
+      'Mozilla/5.0 (Linux; Android 4.4.2; Nexus 4 Build/KOT49H) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3765.0 Mobile Safari/537.36',
+    viewport: {
+      width: 640,
+      height: 384,
+      deviceScaleFactor: 2,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: true,
+    },
+  },
+  {
+    name: 'Nexus 5',
+    userAgent:
+      'Mozilla/5.0 (Linux; Android 6.0; Nexus 5 Build/MRA58N) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3765.0 Mobile Safari/537.36',
+    viewport: {
+      width: 360,
+      height: 640,
+      deviceScaleFactor: 3,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: false,
+    },
+  },
+  {
+    name: 'Nexus 5 landscape',
+    userAgent:
+      'Mozilla/5.0 (Linux; Android 6.0; Nexus 5 Build/MRA58N) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3765.0 Mobile Safari/537.36',
+    viewport: {
+      width: 640,
+      height: 360,
+      deviceScaleFactor: 3,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: true,
+    },
+  },
+  {
+    name: 'Nexus 5X',
+    userAgent:
+      'Mozilla/5.0 (Linux; Android 8.0.0; Nexus 5X Build/OPR4.170623.006) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3765.0 Mobile Safari/537.36',
+    viewport: {
+      width: 412,
+      height: 732,
+      deviceScaleFactor: 2.625,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: false,
+    },
+  },
+  {
+    name: 'Nexus 5X landscape',
+    userAgent:
+      'Mozilla/5.0 (Linux; Android 8.0.0; Nexus 5X Build/OPR4.170623.006) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3765.0 Mobile Safari/537.36',
+    viewport: {
+      width: 732,
+      height: 412,
+      deviceScaleFactor: 2.625,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: true,
+    },
+  },
+  {
+    name: 'Nexus 6',
+    userAgent:
+      'Mozilla/5.0 (Linux; Android 7.1.1; Nexus 6 Build/N6F26U) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3765.0 Mobile Safari/537.36',
+    viewport: {
+      width: 412,
+      height: 732,
+      deviceScaleFactor: 3.5,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: false,
+    },
+  },
+  {
+    name: 'Nexus 6 landscape',
+    userAgent:
+      'Mozilla/5.0 (Linux; Android 7.1.1; Nexus 6 Build/N6F26U) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3765.0 Mobile Safari/537.36',
+    viewport: {
+      width: 732,
+      height: 412,
+      deviceScaleFactor: 3.5,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: true,
+    },
+  },
+  {
+    name: 'Nexus 6P',
+    userAgent:
+      'Mozilla/5.0 (Linux; Android 8.0.0; Nexus 6P Build/OPP3.170518.006) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3765.0 Mobile Safari/537.36',
+    viewport: {
+      width: 412,
+      height: 732,
+      deviceScaleFactor: 3.5,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: false,
+    },
+  },
+  {
+    name: 'Nexus 6P landscape',
+    userAgent:
+      'Mozilla/5.0 (Linux; Android 8.0.0; Nexus 6P Build/OPP3.170518.006) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3765.0 Mobile Safari/537.36',
+    viewport: {
+      width: 732,
+      height: 412,
+      deviceScaleFactor: 3.5,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: true,
+    },
+  },
+  {
+    name: 'Nexus 7',
+    userAgent:
+      'Mozilla/5.0 (Linux; Android 6.0.1; Nexus 7 Build/MOB30X) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3765.0 Safari/537.36',
+    viewport: {
+      width: 600,
+      height: 960,
+      deviceScaleFactor: 2,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: false,
+    },
+  },
+  {
+    name: 'Nexus 7 landscape',
+    userAgent:
+      'Mozilla/5.0 (Linux; Android 6.0.1; Nexus 7 Build/MOB30X) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3765.0 Safari/537.36',
+    viewport: {
+      width: 960,
+      height: 600,
+      deviceScaleFactor: 2,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: true,
+    },
+  },
+  {
+    name: 'Nokia Lumia 520',
+    userAgent:
+      'Mozilla/5.0 (compatible; MSIE 10.0; Windows Phone 8.0; Trident/6.0; IEMobile/10.0; ARM; Touch; NOKIA; Lumia 520)',
+    viewport: {
+      width: 320,
+      height: 533,
+      deviceScaleFactor: 1.5,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: false,
+    },
+  },
+  {
+    name: 'Nokia Lumia 520 landscape',
+    userAgent:
+      'Mozilla/5.0 (compatible; MSIE 10.0; Windows Phone 8.0; Trident/6.0; IEMobile/10.0; ARM; Touch; NOKIA; Lumia 520)',
+    viewport: {
+      width: 533,
+      height: 320,
+      deviceScaleFactor: 1.5,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: true,
+    },
+  },
+  {
+    name: 'Nokia N9',
+    userAgent:
+      'Mozilla/5.0 (MeeGo; NokiaN9) AppleWebKit/534.13 (KHTML, like Gecko) NokiaBrowser/8.5.0 Mobile Safari/534.13',
+    viewport: {
+      width: 480,
+      height: 854,
+      deviceScaleFactor: 1,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: false,
+    },
+  },
+  {
+    name: 'Nokia N9 landscape',
+    userAgent:
+      'Mozilla/5.0 (MeeGo; NokiaN9) AppleWebKit/534.13 (KHTML, like Gecko) NokiaBrowser/8.5.0 Mobile Safari/534.13',
+    viewport: {
+      width: 854,
+      height: 480,
+      deviceScaleFactor: 1,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: true,
+    },
+  },
+  {
+    name: 'Pixel 2',
+    userAgent:
+      'Mozilla/5.0 (Linux; Android 8.0; Pixel 2 Build/OPD3.170816.012) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3765.0 Mobile Safari/537.36',
+    viewport: {
+      width: 411,
+      height: 731,
+      deviceScaleFactor: 2.625,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: false,
+    },
+  },
+  {
+    name: 'Pixel 2 landscape',
+    userAgent:
+      'Mozilla/5.0 (Linux; Android 8.0; Pixel 2 Build/OPD3.170816.012) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3765.0 Mobile Safari/537.36',
+    viewport: {
+      width: 731,
+      height: 411,
+      deviceScaleFactor: 2.625,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: true,
+    },
+  },
+  {
+    name: 'Pixel 2 XL',
+    userAgent:
+      'Mozilla/5.0 (Linux; Android 8.0.0; Pixel 2 XL Build/OPD1.170816.004) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3765.0 Mobile Safari/537.36',
+    viewport: {
+      width: 411,
+      height: 823,
+      deviceScaleFactor: 3.5,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: false,
+    },
+  },
+  {
+    name: 'Pixel 2 XL landscape',
+    userAgent:
+      'Mozilla/5.0 (Linux; Android 8.0.0; Pixel 2 XL Build/OPD1.170816.004) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3765.0 Mobile Safari/537.36',
+    viewport: {
+      width: 823,
+      height: 411,
+      deviceScaleFactor: 3.5,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: true,
+    },
+  },
+  {
+    name: 'Pixel 3',
+    userAgent:
+      'Mozilla/5.0 (Linux; Android 9; Pixel 3 Build/PQ1A.181105.017.A1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.158 Mobile Safari/537.36',
+    viewport: {
+      width: 393,
+      height: 786,
+      deviceScaleFactor: 2.75,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: false,
+    },
+  },
+  {
+    name: 'Pixel 3 landscape',
+    userAgent:
+      'Mozilla/5.0 (Linux; Android 9; Pixel 3 Build/PQ1A.181105.017.A1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.158 Mobile Safari/537.36',
+    viewport: {
+      width: 786,
+      height: 393,
+      deviceScaleFactor: 2.75,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: true,
+    },
+  },
+  {
+    name: 'Pixel 4',
+    userAgent:
+      'Mozilla/5.0 (Linux; Android 10; Pixel 4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/81.0.4044.138 Mobile Safari/537.36',
+    viewport: {
+      width: 353,
+      height: 745,
+      deviceScaleFactor: 3,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: false,
+    },
+  },
+  {
+    name: 'Pixel 4 landscape',
+    userAgent:
+      'Mozilla/5.0 (Linux; Android 10; Pixel 4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/81.0.4044.138 Mobile Safari/537.36',
+    viewport: {
+      width: 745,
+      height: 353,
+      deviceScaleFactor: 3,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: true,
+    },
+  },
+  {
+    name: 'Pixel 4a (5G)',
+    userAgent:
+      'Mozilla/5.0 (Linux; Android 11; Pixel 4a (5G)) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4812.0 Mobile Safari/537.36',
+    viewport: {
+      width: 353,
+      height: 745,
+      deviceScaleFactor: 3,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: false,
+    },
+  },
+  {
+    name: 'Pixel 4a (5G) landscape',
+    userAgent:
+      'Mozilla/5.0 (Linux; Android 11; Pixel 4a (5G)) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4812.0 Mobile Safari/537.36',
+    viewport: {
+      width: 745,
+      height: 353,
+      deviceScaleFactor: 3,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: true,
+    },
+  },
+  {
+    name: 'Pixel 5',
+    userAgent:
+      'Mozilla/5.0 (Linux; Android 11; Pixel 5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4812.0 Mobile Safari/537.36',
+    viewport: {
+      width: 393,
+      height: 851,
+      deviceScaleFactor: 3,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: false,
+    },
+  },
+  {
+    name: 'Pixel 5 landscape',
+    userAgent:
+      'Mozilla/5.0 (Linux; Android 11; Pixel 5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4812.0 Mobile Safari/537.36',
+    viewport: {
+      width: 851,
+      height: 393,
+      deviceScaleFactor: 3,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: true,
+    },
+  },
+  {
+    name: 'Moto G4',
+    userAgent:
+      'Mozilla/5.0 (Linux; Android 7.0; Moto G (4)) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4812.0 Mobile Safari/537.36',
+    viewport: {
+      width: 360,
+      height: 640,
+      deviceScaleFactor: 3,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: false,
+    },
+  },
+  {
+    name: 'Moto G4 landscape',
+    userAgent:
+      'Mozilla/5.0 (Linux; Android 7.0; Moto G (4)) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4812.0 Mobile Safari/537.36',
+    viewport: {
+      width: 640,
+      height: 360,
+      deviceScaleFactor: 3,
+      isMobile: true,
+      hasTouch: true,
+      isLandscape: true,
+    },
+  },
+];
+
+/**
+ * @public
+ */
+export type DevicesMap = {
+  [name: string]: Device;
+};
+
+/**
+ * A list of devices to be used with `page.emulate(options)`. Actual list of devices can be found in {@link https://github.com/puppeteer/puppeteer/blob/main/src/common/DeviceDescriptors.ts | src/common/DeviceDescriptors.ts}.
+ *
+ * @example
+ *
+ * ```ts
+ * const puppeteer = require('puppeteer');
+ * const iPhone = puppeteer.devices['iPhone 6'];
+ *
+ * (async () => {
+ *   const browser = await puppeteer.launch();
+ *   const page = await browser.newPage();
+ *   await page.emulate(iPhone);
+ *   await page.goto('https://www.google.com');
+ *   // other actions...
+ *   await browser.close();
+ * })();
+ * ```
+ *
+ * @public
+ */
+const devices: DevicesMap = {};
+
+for (const device of deviceArray) {
+  devices[device.name] = device;
+}
+
+export {devices};
diff --git a/remote/test/puppeteer/src/common/Dialog.ts b/remote/test/puppeteer/src/common/Dialog.ts
new file mode 100644
index 0000000000..6d84fd0d0b
--- /dev/null
+++ b/remote/test/puppeteer/src/common/Dialog.ts
@@ -0,0 +1,114 @@
+/**
+ * Copyright 2017 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import {assert} from '../util/assert.js';
+import {CDPSession} from './Connection.js';
+import {Protocol} from 'devtools-protocol';
+
+/**
+ * Dialog instances are dispatched by the {@link Page} via the `dialog` event.
+ *
+ * @remarks
+ *
+ * @example
+ *
+ * ```ts
+ * const puppeteer = require('puppeteer');
+ *
+ * (async () => {
+ *   const browser = await puppeteer.launch();
+ *   const page = await browser.newPage();
+ *   page.on('dialog', async dialog => {
+ *     console.log(dialog.message());
+ *     await dialog.dismiss();
+ *     await browser.close();
+ *   });
+ *   page.evaluate(() => alert('1'));
+ * })();
+ * ```
+ *
+ * @public
+ */
+export class Dialog {
+  #client: CDPSession;
+  #type: Protocol.Page.DialogType;
+  #message: string;
+  #defaultValue: string;
+  #handled = false;
+
+  /**
+   * @internal
+   */
+  constructor(
+    client: CDPSession,
+    type: Protocol.Page.DialogType,
+    message: string,
+    defaultValue = ''
+  ) {
+    this.#client = client;
+    this.#type = type;
+    this.#message = message;
+    this.#defaultValue = defaultValue;
+  }
+
+  /**
+   * @returns The type of the dialog.
+   */
+  type(): Protocol.Page.DialogType {
+    return this.#type;
+  }
+
+  /**
+   * @returns The message displayed in the dialog.
+   */
+  message(): string {
+    return this.#message;
+  }
+
+  /**
+   * @returns The default value of the prompt, or an empty string if the dialog
+   * is not a `prompt`.
+   */
+  defaultValue(): string {
+    return this.#defaultValue;
+  }
+
+  /**
+   * @param promptText - optional text that will be entered in the dialog
+   * prompt. Has no effect if the dialog's type is not `prompt`.
+   *
+   * @returns A promise that resolves when the dialog has been accepted.
+   */
+  async accept(promptText?: string): Promise<void> {
+    assert(!this.#handled, 'Cannot accept dialog which is already handled!');
+    this.#handled = true;
+    await this.#client.send('Page.handleJavaScriptDialog', {
+      accept: true,
+      promptText: promptText,
+    });
+  }
+
+  /**
+   * @returns A promise which will resolve once the dialog has been dismissed
+   */
+  async dismiss(): Promise<void> {
+    assert(!this.#handled, 'Cannot dismiss dialog which is already handled!');
+    this.#handled = true;
+    await this.#client.send('Page.handleJavaScriptDialog', {
+      accept: false,
+    });
+  }
+}
diff --git a/remote/test/puppeteer/src/common/ElementHandle.ts b/remote/test/puppeteer/src/common/ElementHandle.ts
new file mode 100644
index 0000000000..8cb19fa042
--- /dev/null
+++ b/remote/test/puppeteer/src/common/ElementHandle.ts
@@ -0,0 +1,1039 @@
+import {Protocol} from 'devtools-protocol';
+import {assert} from '../util/assert.js';
+import {ExecutionContext} from './ExecutionContext.js';
+import {Frame} from './Frame.js';
+import {FrameManager} from './FrameManager.js';
+import {WaitForSelectorOptions} from './IsolatedWorld.js';
+import {
+  BoundingBox,
+  BoxModel,
+  ClickOptions,
+  JSHandle,
+  Offset,
+  Point,
+  PressOptions,
+} from './JSHandle.js';
+import {Page, ScreenshotOptions} from './Page.js';
+import {getQueryHandlerAndSelector} from './QueryHandler.js';
+import {EvaluateFunc, HandleFor, NodeFor} from './types.js';
+import {KeyInput} from './USKeyboardLayout.js';
+import {debugError, isString} from './util.js';
+
+const applyOffsetsToQuad = (
+  quad: Point[],
+  offsetX: number,
+  offsetY: number
+) => {
+  return quad.map(part => {
+    return {x: part.x + offsetX, y: part.y + offsetY};
+  });
+};
+
+/**
+ * ElementHandle represents an in-page DOM element.
+ *
+ * @remarks
+ * ElementHandles can be created with the {@link Page.$} method.
+ *
+ * ```ts
+ * const puppeteer = require('puppeteer');
+ *
+ * (async () => {
+ *   const browser = await puppeteer.launch();
+ *   const page = await browser.newPage();
+ *   await page.goto('https://example.com');
+ *   const hrefElement = await page.$('a');
+ *   await hrefElement.click();
+ *   // ...
+ * })();
+ * ```
+ *
+ * ElementHandle prevents the DOM element from being garbage-collected unless the
+ * handle is {@link JSHandle.dispose | disposed}. ElementHandles are auto-disposed
+ * when their origin frame gets navigated.
+ *
+ * ElementHandle instances can be used as arguments in {@link Page.$eval} and
+ * {@link Page.evaluate} methods.
+ *
+ * If you're using TypeScript, ElementHandle takes a generic argument that
+ * denotes the type of element the handle is holding within. For example, if you
+ * have a handle to a `<select>` element, you can type it as
+ * `ElementHandle<HTMLSelectElement>` and you get some nicer type checks.
+ *
+ * @public
+ */
+
+export class ElementHandle<
+  ElementType extends Node = Element
+> extends JSHandle<ElementType> {
+  #frame: Frame;
+
+  /**
+   * @internal
+   */
+  constructor(
+    context: ExecutionContext,
+    remoteObject: Protocol.Runtime.RemoteObject,
+    frame: Frame
+  ) {
+    super(context, remoteObject);
+    this.#frame = frame;
+  }
+
+  get #frameManager(): FrameManager {
+    return this.#frame._frameManager;
+  }
+
+  get #page(): Page {
+    return this.#frame.page();
+  }
+
+  get frame(): Frame {
+    return this.#frame;
+  }
+
+  /**
+   * Queries the current element for an element matching the given selector.
+   *
+   * @param selector - The selector to query for.
+   * @returns A {@link ElementHandle | element handle} to the first element
+   * matching the given selector. Otherwise, `null`.
+   */
+  async $<Selector extends string>(
+    selector: Selector
+  ): Promise<ElementHandle<NodeFor<Selector>> | null> {
+    const {updatedSelector, queryHandler} =
+      getQueryHandlerAndSelector(selector);
+    assert(
+      queryHandler.queryOne,
+      'Cannot handle queries for a single element with the given selector'
+    );
+    return (await queryHandler.queryOne(
+      this,
+      updatedSelector
+    )) as ElementHandle<NodeFor<Selector>> | null;
+  }
+
+  /**
+   * Queries the current element for all elements matching the given selector.
+   *
+   * @param selector - The selector to query for.
+   * @returns An array of {@link ElementHandle | element handles} that point to
+   * elements matching the given selector.
+   */
+  async $$<Selector extends string>(
+    selector: Selector
+  ): Promise<Array<ElementHandle<NodeFor<Selector>>>> {
+    const {updatedSelector, queryHandler} =
+      getQueryHandlerAndSelector(selector);
+    assert(
+      queryHandler.queryAll,
+      'Cannot handle queries for a multiple element with the given selector'
+    );
+    return (await queryHandler.queryAll(this, updatedSelector)) as Array<
+      ElementHandle<NodeFor<Selector>>
+    >;
+  }
+
+  /**
+   * Runs the given function on the first element matching the given selector in
+   * the current element.
+   *
+   * If the given function returns a promise, then this method will wait till
+   * the promise resolves.
+   *
+   * @example
+   *
+   * ```ts
+   * const tweetHandle = await page.$('.tweet');
+   * expect(await tweetHandle.$eval('.like', node => node.innerText)).toBe(
+   *   '100'
+   * );
+   * expect(await tweetHandle.$eval('.retweets', node => node.innerText)).toBe(
+   *   '10'
+   * );
+   * ```
+   *
+   * @param selector - The selector to query for.
+   * @param pageFunction - The function to be evaluated in this element's page's
+   * context. The first element matching the selector will be passed in as the
+   * first argument.
+   * @param args - Additional arguments to pass to `pageFunction`.
+   * @returns A promise to the result of the function.
+   */
+  async $eval<
+    Selector extends string,
+    Params extends unknown[],
+    Func extends EvaluateFunc<
+      [ElementHandle<NodeFor<Selector>>, ...Params]
+    > = EvaluateFunc<[ElementHandle<NodeFor<Selector>>, ...Params]>
+  >(
+    selector: Selector,
+    pageFunction: Func | string,
+    ...args: Params
+  ): Promise<Awaited<ReturnType<Func>>> {
+    const elementHandle = await this.$(selector);
+    if (!elementHandle) {
+      throw new Error(
+        `Error: failed to find element matching selector "${selector}"`
+      );
+    }
+    const result = await elementHandle.evaluate(pageFunction, ...args);
+    await elementHandle.dispose();
+    return result;
+  }
+
+  /**
+   * Runs the given function on an array of elements matching the given selector
+   * in the current element.
+   *
+   * If the given function returns a promise, then this method will wait till
+   * the promise resolves.
+   *
+   * @example
+   * HTML:
+   *
+   * ```html
+   * <div class="feed">
+   *   <div class="tweet">Hello!</div>
+   *   <div class="tweet">Hi!</div>
+   * </div>
+   * ```
+   *
+   * JavaScript:
+   *
+   * ```js
+   * const feedHandle = await page.$('.feed');
+   * expect(
+   *   await feedHandle.$$eval('.tweet', nodes => nodes.map(n => n.innerText))
+   * ).toEqual(['Hello!', 'Hi!']);
+   * ```
+   *
+   * @param selector - The selector to query for.
+   * @param pageFunction - The function to be evaluated in the element's page's
+   * context. An array of elements matching the given selector will be passed to
+   * the function as its first argument.
+   * @param args - Additional arguments to pass to `pageFunction`.
+   * @returns A promise to the result of the function.
+   */
+  async $$eval<
+    Selector extends string,
+    Params extends unknown[],
+    Func extends EvaluateFunc<
+      [Array<NodeFor<Selector>>, ...Params]
+    > = EvaluateFunc<[Array<NodeFor<Selector>>, ...Params]>
+  >(
+    selector: Selector,
+    pageFunction: Func | string,
+    ...args: Params
+  ): Promise<Awaited<ReturnType<Func>>> {
+    const {updatedSelector, queryHandler} =
+      getQueryHandlerAndSelector(selector);
+    assert(
+      queryHandler.queryAll,
+      'Cannot handle queries for a multiple element with the given selector'
+    );
+    const handles = (await queryHandler.queryAll(
+      this,
+      updatedSelector
+    )) as Array<HandleFor<NodeFor<Selector>>>;
+    const elements = await this.evaluateHandle((_, ...elements) => {
+      return elements;
+    }, ...handles);
+    const [result] = await Promise.all([
+      elements.evaluate(pageFunction, ...args),
+      ...handles.map(handle => {
+        return handle.dispose();
+      }),
+    ]);
+    await elements.dispose();
+    return result;
+  }
+
+  /**
+   * @deprecated Use {@link ElementHandle.$$} with the `xpath` prefix.
+   *
+   * The method evaluates the XPath expression relative to the elementHandle.
+   * If there are no such elements, the method will resolve to an empty array.
+   * @param expression - Expression to {@link https://developer.mozilla.org/en-US/docs/Web/API/Document/evaluate | evaluate}
+   */
+  async $x(expression: string): Promise<Array<ElementHandle<Node>>> {
+    if (expression.startsWith('//')) {
+      expression = `.${expression}`;
+    }
+    return this.$$(`xpath/${expression}`);
+  }
+
+  /**
+   * Wait for an element matching the given selector to appear in the current
+   * element.
+   *
+   * Unlike {@link Frame.waitForSelector}, this method does not work across
+   * navigations or if the element is detached from DOM.
+   *
+   * @example
+   *
+   * ```ts
+   * const puppeteer = require('puppeteer');
+   *
+   * (async () => {
+   *   const browser = await puppeteer.launch();
+   *   const page = await browser.newPage();
+   *   let currentURL;
+   *   page
+   *     .mainFrame()
+   *     .waitForSelector('img')
+   *     .then(() => console.log('First URL with image: ' + currentURL));
+   *
+   *   for (currentURL of [
+   *     'https://example.com',
+   *     'https://google.com',
+   *     'https://bbc.com',
+   *   ]) {
+   *     await page.goto(currentURL);
+   *   }
+   *   await browser.close();
+   * })();
+   * ```
+   *
+   * @param selector - The selector to query and wait for.
+   * @param options - Options for customizing waiting behavior.
+   * @returns An element matching the given selector.
+   * @throws Throws if an element matching the given selector doesn't appear.
+   */
+  async waitForSelector<Selector extends string>(
+    selector: Selector,
+    options: WaitForSelectorOptions = {}
+  ): Promise<ElementHandle<NodeFor<Selector>> | null> {
+    const {updatedSelector, queryHandler} =
+      getQueryHandlerAndSelector(selector);
+    assert(queryHandler.waitFor, 'Query handler does not support waiting');
+    return (await queryHandler.waitFor(
+      this,
+      updatedSelector,
+      options
+    )) as ElementHandle<NodeFor<Selector>> | null;
+  }
+
+  /**
+   * @deprecated Use {@link ElementHandle.waitForSelector} with the `xpath`
+   * prefix.
+   *
+   * Wait for the `xpath` within the element. If at the moment of calling the
+   * method the `xpath` already exists, the method will return immediately. If
+   * the `xpath` doesn't appear after the `timeout` milliseconds of waiting, the
+   * function will throw.
+   *
+   * If `xpath` starts with `//` instead of `.//`, the dot will be appended
+   * automatically.
+   *
+   * This method works across navigation
+   *
+   * ```ts
+   * const puppeteer = require('puppeteer');
+   * (async () => {
+   *   const browser = await puppeteer.launch();
+   *   const page = await browser.newPage();
+   *   let currentURL;
+   *   page
+   *     .waitForXPath('//img')
+   *     .then(() => console.log('First URL with image: ' + currentURL));
+   *   for (currentURL of [
+   *     'https://example.com',
+   *     'https://google.com',
+   *     'https://bbc.com',
+   *   ]) {
+   *     await page.goto(currentURL);
+   *   }
+   *   await browser.close();
+   * })();
+   * ```
+   *
+   * @param xpath - A
+   * {@link https://developer.mozilla.org/en-US/docs/Web/XPath | xpath} of an
+   * element to wait for
+   * @param options - Optional waiting parameters
+   * @returns Promise which resolves when element specified by xpath string is
+   * added to DOM. Resolves to `null` if waiting for `hidden: true` and xpath is
+   * not found in DOM.
+   * @remarks
+   * The optional Argument `options` have properties:
+   *
+   * - `visible`: A boolean to wait for element to be present in DOM and to be
+   *   visible, i.e. to not have `display: none` or `visibility: hidden` CSS
+   *   properties. Defaults to `false`.
+   *
+   * - `hidden`: A boolean wait for element to not be found in the DOM or to be
+   *   hidden, i.e. have `display: none` or `visibility: hidden` CSS properties.
+   *   Defaults to `false`.
+   *
+   * - `timeout`: A number which is maximum time to wait for in milliseconds.
+   *   Defaults to `30000` (30 seconds). Pass `0` to disable timeout. The
+   *   default value can be changed by using the {@link Page.setDefaultTimeout}
+   *   method.
+   */
+  async waitForXPath(
+    xpath: string,
+    options: {
+      visible?: boolean;
+      hidden?: boolean;
+      timeout?: number;
+    } = {}
+  ): Promise<ElementHandle<Node> | null> {
+    if (xpath.startsWith('//')) {
+      xpath = `.${xpath}`;
+    }
+    return this.waitForSelector(`xpath/${xpath}`, options);
+  }
+
+  override asElement(): ElementHandle<ElementType> | null {
+    return this;
+  }
+
+  /**
+   * Resolves to the content frame for element handles referencing
+   * iframe nodes, or null otherwise
+   */
+  async contentFrame(): Promise<Frame | null> {
+    const nodeInfo = await this.client.send('DOM.describeNode', {
+      objectId: this.remoteObject().objectId,
+    });
+    if (typeof nodeInfo.node.frameId !== 'string') {
+      return null;
+    }
+    return this.#frameManager.frame(nodeInfo.node.frameId);
+  }
+
+  async #scrollIntoViewIfNeeded(this: ElementHandle<Element>): Promise<void> {
+    const error = await this.evaluate(
+      async (element): Promise<string | undefined> => {
+        if (!element.isConnected) {
+          return 'Node is detached from document';
+        }
+        if (element.nodeType !== Node.ELEMENT_NODE) {
+          return 'Node is not of type HTMLElement';
+        }
+        return;
+      }
+    );
+
+    if (error) {
+      throw new Error(error);
+    }
+
+    try {
+      await this.client.send('DOM.scrollIntoViewIfNeeded', {
+        objectId: this.remoteObject().objectId,
+      });
+    } catch (_err) {
+      // Fallback to Element.scrollIntoView if DOM.scrollIntoViewIfNeeded is not supported
+      await this.evaluate(
+        async (element, pageJavascriptEnabled): Promise<void> => {
+          const visibleRatio = async () => {
+            return await new Promise(resolve => {
+              const observer = new IntersectionObserver(entries => {
+                resolve(entries[0]!.intersectionRatio);
+                observer.disconnect();
+              });
+              observer.observe(element);
+            });
+          };
+          if (!pageJavascriptEnabled || (await visibleRatio()) !== 1.0) {
+            element.scrollIntoView({
+              block: 'center',
+              inline: 'center',
+              // @ts-expect-error Chrome still supports behavior: instant but
+              // it's not in the spec so TS shouts We don't want to make this
+              // breaking change in Puppeteer yet so we'll ignore the line.
+              behavior: 'instant',
+            });
+          }
+        },
+        this.#page.isJavaScriptEnabled()
+      );
+    }
+  }
+
+  async #getOOPIFOffsets(
+    frame: Frame
+  ): Promise<{offsetX: number; offsetY: number}> {
+    let offsetX = 0;
+    let offsetY = 0;
+    let currentFrame: Frame | null = frame;
+    while (currentFrame && currentFrame.parentFrame()) {
+      const parent = currentFrame.parentFrame();
+      if (!currentFrame.isOOPFrame() || !parent) {
+        currentFrame = parent;
+        continue;
+      }
+      const {backendNodeId} = await parent._client().send('DOM.getFrameOwner', {
+        frameId: currentFrame._id,
+      });
+      const result = await parent._client().send('DOM.getBoxModel', {
+        backendNodeId: backendNodeId,
+      });
+      if (!result) {
+        break;
+      }
+      const contentBoxQuad = result.model.content;
+      const topLeftCorner = this.#fromProtocolQuad(contentBoxQuad)[0];
+      offsetX += topLeftCorner!.x;
+      offsetY += topLeftCorner!.y;
+      currentFrame = parent;
+    }
+    return {offsetX, offsetY};
+  }
+
+  /**
+   * Returns the middle point within an element unless a specific offset is provided.
+   */
+  async clickablePoint(offset?: Offset): Promise<Point> {
+    const [result, layoutMetrics] = await Promise.all([
+      this.client
+        .send('DOM.getContentQuads', {
+          objectId: this.remoteObject().objectId,
+        })
+        .catch(debugError),
+      this.#page._client().send('Page.getLayoutMetrics'),
+    ]);
+    if (!result || !result.quads.length) {
+      throw new Error('Node is either not clickable or not an HTMLElement');
+    }
+    // Filter out quads that have too small area to click into.
+    // Fallback to `layoutViewport` in case of using Firefox.
+    const {clientWidth, clientHeight} =
+      layoutMetrics.cssLayoutViewport || layoutMetrics.layoutViewport;
+    const {offsetX, offsetY} = await this.#getOOPIFOffsets(this.#frame);
+    const quads = result.quads
+      .map(quad => {
+        return this.#fromProtocolQuad(quad);
+      })
+      .map(quad => {
+        return applyOffsetsToQuad(quad, offsetX, offsetY);
+      })
+      .map(quad => {
+        return this.#intersectQuadWithViewport(quad, clientWidth, clientHeight);
+      })
+      .filter(quad => {
+        return computeQuadArea(quad) > 1;
+      });
+    if (!quads.length) {
+      throw new Error('Node is either not clickable or not an HTMLElement');
+    }
+    const quad = quads[0]!;
+    if (offset) {
+      // Return the point of the first quad identified by offset.
+      let minX = Number.MAX_SAFE_INTEGER;
+      let minY = Number.MAX_SAFE_INTEGER;
+      for (const point of quad) {
+        if (point.x < minX) {
+          minX = point.x;
+        }
+        if (point.y < minY) {
+          minY = point.y;
+        }
+      }
+      if (
+        minX !== Number.MAX_SAFE_INTEGER &&
+        minY !== Number.MAX_SAFE_INTEGER
+      ) {
+        return {
+          x: minX + offset.x,
+          y: minY + offset.y,
+        };
+      }
+    }
+    // Return the middle point of the first quad.
+    let x = 0;
+    let y = 0;
+    for (const point of quad) {
+      x += point.x;
+      y += point.y;
+    }
+    return {
+      x: x / 4,
+      y: y / 4,
+    };
+  }
+
+  #getBoxModel(): Promise<void | Protocol.DOM.GetBoxModelResponse> {
+    const params: Protocol.DOM.GetBoxModelRequest = {
+      objectId: this.remoteObject().objectId,
+    };
+    return this.client.send('DOM.getBoxModel', params).catch(error => {
+      return debugError(error);
+    });
+  }
+
+  #fromProtocolQuad(quad: number[]): Point[] {
+    return [
+      {x: quad[0]!, y: quad[1]!},
+      {x: quad[2]!, y: quad[3]!},
+      {x: quad[4]!, y: quad[5]!},
+      {x: quad[6]!, y: quad[7]!},
+    ];
+  }
+
+  #intersectQuadWithViewport(
+    quad: Point[],
+    width: number,
+    height: number
+  ): Point[] {
+    return quad.map(point => {
+      return {
+        x: Math.min(Math.max(point.x, 0), width),
+        y: Math.min(Math.max(point.y, 0), height),
+      };
+    });
+  }
+
+  /**
+   * This method scrolls element into view if needed, and then
+   * uses {@link Page.mouse} to hover over the center of the element.
+   * If the element is detached from DOM, the method throws an error.
+   */
+  async hover(this: ElementHandle<Element>): Promise<void> {
+    await this.#scrollIntoViewIfNeeded();
+    const {x, y} = await this.clickablePoint();
+    await this.#page.mouse.move(x, y);
+  }
+
+  /**
+   * This method scrolls element into view if needed, and then
+   * uses {@link Page.mouse} to click in the center of the element.
+   * If the element is detached from DOM, the method throws an error.
+   */
+  async click(
+    this: ElementHandle<Element>,
+    options: ClickOptions = {}
+  ): Promise<void> {
+    await this.#scrollIntoViewIfNeeded();
+    const {x, y} = await this.clickablePoint(options.offset);
+    await this.#page.mouse.click(x, y, options);
+  }
+
+  /**
+   * This method creates and captures a dragevent from the element.
+   */
+  async drag(
+    this: ElementHandle<Element>,
+    target: Point
+  ): Promise<Protocol.Input.DragData> {
+    assert(
+      this.#page.isDragInterceptionEnabled(),
+      'Drag Interception is not enabled!'
+    );
+    await this.#scrollIntoViewIfNeeded();
+    const start = await this.clickablePoint();
+    return await this.#page.mouse.drag(start, target);
+  }
+
+  /**
+   * This method creates a `dragenter` event on the element.
+   */
+  async dragEnter(
+    this: ElementHandle<Element>,
+    data: Protocol.Input.DragData = {items: [], dragOperationsMask: 1}
+  ): Promise<void> {
+    await this.#scrollIntoViewIfNeeded();
+    const target = await this.clickablePoint();
+    await this.#page.mouse.dragEnter(target, data);
+  }
+
+  /**
+   * This method creates a `dragover` event on the element.
+   */
+  async dragOver(
+    this: ElementHandle<Element>,
+    data: Protocol.Input.DragData = {items: [], dragOperationsMask: 1}
+  ): Promise<void> {
+    await this.#scrollIntoViewIfNeeded();
+    const target = await this.clickablePoint();
+    await this.#page.mouse.dragOver(target, data);
+  }
+
+  /**
+   * This method triggers a drop on the element.
+   */
+  async drop(
+    this: ElementHandle<Element>,
+    data: Protocol.Input.DragData = {items: [], dragOperationsMask: 1}
+  ): Promise<void> {
+    await this.#scrollIntoViewIfNeeded();
+    const destination = await this.clickablePoint();
+    await this.#page.mouse.drop(destination, data);
+  }
+
+  /**
+   * This method triggers a dragenter, dragover, and drop on the element.
+   */
+  async dragAndDrop(
+    this: ElementHandle<Element>,
+    target: ElementHandle<Node>,
+    options?: {delay: number}
+  ): Promise<void> {
+    await this.#scrollIntoViewIfNeeded();
+    const startPoint = await this.clickablePoint();
+    const targetPoint = await target.clickablePoint();
+    await this.#page.mouse.dragAndDrop(startPoint, targetPoint, options);
+  }
+
+  /**
+   * Triggers a `change` and `input` event once all the provided options have been
+   * selected. If there's no `<select>` element matching `selector`, the method
+   * throws an error.
+   *
+   * @example
+   *
+   * ```ts
+   * handle.select('blue'); // single selection
+   * handle.select('red', 'green', 'blue'); // multiple selections
+   * ```
+   *
+   * @param values - Values of options to select. If the `<select>` has the
+   * `multiple` attribute, all values are considered, otherwise only the first
+   * one is taken into account.
+   */
+  async select(...values: string[]): Promise<string[]> {
+    for (const value of values) {
+      assert(
+        isString(value),
+        'Values must be strings. Found value "' +
+          value +
+          '" of type "' +
+          typeof value +
+          '"'
+      );
+    }
+
+    return this.evaluate((element, vals): string[] => {
+      const values = new Set(vals);
+      if (!(element instanceof HTMLSelectElement)) {
+        throw new Error('Element is not a <select> element.');
+      }
+
+      const selectedValues = new Set<string>();
+      if (!element.multiple) {
+        for (const option of element.options) {
+          option.selected = false;
+        }
+        for (const option of element.options) {
+          if (values.has(option.value)) {
+            option.selected = true;
+            selectedValues.add(option.value);
+            break;
+          }
+        }
+      } else {
+        for (const option of element.options) {
+          option.selected = values.has(option.value);
+          if (option.selected) {
+            selectedValues.add(option.value);
+          }
+        }
+      }
+      element.dispatchEvent(new Event('input', {bubbles: true}));
+      element.dispatchEvent(new Event('change', {bubbles: true}));
+      return [...selectedValues.values()];
+    }, values);
+  }
+
+  /**
+   * This method expects `elementHandle` to point to an
+   * {@link https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input | input element}.
+   *
+   * @param filePaths - Sets the value of the file input to these paths.
+   * If a path is relative, then it is resolved against the
+   * {@link https://nodejs.org/api/process.html#process_process_cwd | current working directory}.
+   * Note for locals script connecting to remote chrome environments,
+   * paths must be absolute.
+   */
+  async uploadFile(
+    this: ElementHandle<HTMLInputElement>,
+    ...filePaths: string[]
+  ): Promise<void> {
+    const isMultiple = await this.evaluate(element => {
+      return element.multiple;
+    });
+    assert(
+      filePaths.length <= 1 || isMultiple,
+      'Multiple file uploads only work with <input type=file multiple>'
+    );
+
+    // Locate all files and confirm that they exist.
+    let path: typeof import('path');
+    try {
+      path = await import('path');
+    } catch (error) {
+      if (error instanceof TypeError) {
+        throw new Error(
+          `JSHandle#uploadFile can only be used in Node-like environments.`
+        );
+      }
+      throw error;
+    }
+    const files = filePaths.map(filePath => {
+      if (path.win32.isAbsolute(filePath) || path.posix.isAbsolute(filePath)) {
+        return filePath;
+      } else {
+        return path.resolve(filePath);
+      }
+    });
+    const {objectId} = this.remoteObject();
+    const {node} = await this.client.send('DOM.describeNode', {objectId});
+    const {backendNodeId} = node;
+
+    /*  The zero-length array is a special case, it seems that
+         DOM.setFileInputFiles does not actually update the files in that case,
+         so the solution is to eval the element value to a new FileList directly.
+     */
+    if (files.length === 0) {
+      await this.evaluate(element => {
+        element.files = new DataTransfer().files;
+
+        // Dispatch events for this case because it should behave akin to a user action.
+        element.dispatchEvent(new Event('input', {bubbles: true}));
+        element.dispatchEvent(new Event('change', {bubbles: true}));
+      });
+    } else {
+      await this.client.send('DOM.setFileInputFiles', {
+        objectId,
+        files,
+        backendNodeId,
+      });
+    }
+  }
+
+  /**
+   * This method scrolls element into view if needed, and then uses
+   * {@link Touchscreen.tap} to tap in the center of the element.
+   * If the element is detached from DOM, the method throws an error.
+   */
+  async tap(this: ElementHandle<Element>): Promise<void> {
+    await this.#scrollIntoViewIfNeeded();
+    const {x, y} = await this.clickablePoint();
+    await this.#page.touchscreen.tap(x, y);
+  }
+
+  /**
+   * Calls {@link https://developer.mozilla.org/en-US/docs/Web/API/HTMLElement/focus | focus} on the element.
+   */
+  async focus(): Promise<void> {
+    await this.evaluate(element => {
+      if (!(element instanceof HTMLElement)) {
+        throw new Error('Cannot focus non-HTMLElement');
+      }
+      return element.focus();
+    });
+  }
+
+  /**
+   * Focuses the element, and then sends a `keydown`, `keypress`/`input`, and
+   * `keyup` event for each character in the text.
+   *
+   * To press a special key, like `Control` or `ArrowDown`,
+   * use {@link ElementHandle.press}.
+   *
+   * @example
+   *
+   * ```ts
+   * await elementHandle.type('Hello'); // Types instantly
+   * await elementHandle.type('World', {delay: 100}); // Types slower, like a user
+   * ```
+   *
+   * @example
+   * An example of typing into a text field and then submitting the form:
+   *
+   * ```ts
+   * const elementHandle = await page.$('input');
+   * await elementHandle.type('some text');
+   * await elementHandle.press('Enter');
+   * ```
+   */
+  async type(text: string, options?: {delay: number}): Promise<void> {
+    await this.focus();
+    await this.#page.keyboard.type(text, options);
+  }
+
+  /**
+   * Focuses the element, and then uses {@link Keyboard.down} and {@link Keyboard.up}.
+   *
+   * @remarks
+   * If `key` is a single character and no modifier keys besides `Shift`
+   * are being held down, a `keypress`/`input` event will also be generated.
+   * The `text` option can be specified to force an input event to be generated.
+   *
+   * **NOTE** Modifier keys DO affect `elementHandle.press`. Holding down `Shift`
+   * will type the text in upper case.
+   *
+   * @param key - Name of key to press, such as `ArrowLeft`.
+   * See {@link KeyInput} for a list of all key names.
+   */
+  async press(key: KeyInput, options?: PressOptions): Promise<void> {
+    await this.focus();
+    await this.#page.keyboard.press(key, options);
+  }
+
+  /**
+   * This method returns the bounding box of the element (relative to the main frame),
+   * or `null` if the element is not visible.
+   */
+  async boundingBox(): Promise<BoundingBox | null> {
+    const result = await this.#getBoxModel();
+
+    if (!result) {
+      return null;
+    }
+
+    const {offsetX, offsetY} = await this.#getOOPIFOffsets(this.#frame);
+    const quad = result.model.border;
+    const x = Math.min(quad[0]!, quad[2]!, quad[4]!, quad[6]!);
+    const y = Math.min(quad[1]!, quad[3]!, quad[5]!, quad[7]!);
+    const width = Math.max(quad[0]!, quad[2]!, quad[4]!, quad[6]!) - x;
+    const height = Math.max(quad[1]!, quad[3]!, quad[5]!, quad[7]!) - y;
+
+    return {x: x + offsetX, y: y + offsetY, width, height};
+  }
+
+  /**
+   * This method returns boxes of the element, or `null` if the element is not visible.
+   *
+   * @remarks
+   *
+   * Boxes are represented as an array of points;
+   * Each Point is an object `{x, y}`. Box points are sorted clock-wise.
+   */
+  async boxModel(): Promise<BoxModel | null> {
+    const result = await this.#getBoxModel();
+
+    if (!result) {
+      return null;
+    }
+
+    const {offsetX, offsetY} = await this.#getOOPIFOffsets(this.#frame);
+
+    const {content, padding, border, margin, width, height} = result.model;
+    return {
+      content: applyOffsetsToQuad(
+        this.#fromProtocolQuad(content),
+        offsetX,
+        offsetY
+      ),
+      padding: applyOffsetsToQuad(
+        this.#fromProtocolQuad(padding),
+        offsetX,
+        offsetY
+      ),
+      border: applyOffsetsToQuad(
+        this.#fromProtocolQuad(border),
+        offsetX,
+        offsetY
+      ),
+      margin: applyOffsetsToQuad(
+        this.#fromProtocolQuad(margin),
+        offsetX,
+        offsetY
+      ),
+      width,
+      height,
+    };
+  }
+
+  /**
+   * This method scrolls element into view if needed, and then uses
+   * {@link Page.screenshot} to take a screenshot of the element.
+   * If the element is detached from DOM, the method throws an error.
+   */
+  async screenshot(
+    this: ElementHandle<Element>,
+    options: ScreenshotOptions = {}
+  ): Promise<string | Buffer> {
+    let needsViewportReset = false;
+
+    let boundingBox = await this.boundingBox();
+    assert(boundingBox, 'Node is either not visible or not an HTMLElement');
+
+    const viewport = this.#page.viewport();
+
+    if (
+      viewport &&
+      (boundingBox.width > viewport.width ||
+        boundingBox.height > viewport.height)
+    ) {
+      const newViewport = {
+        width: Math.max(viewport.width, Math.ceil(boundingBox.width)),
+        height: Math.max(viewport.height, Math.ceil(boundingBox.height)),
+      };
+      await this.#page.setViewport(Object.assign({}, viewport, newViewport));
+
+      needsViewportReset = true;
+    }
+
+    await this.#scrollIntoViewIfNeeded();
+
+    boundingBox = await this.boundingBox();
+    assert(boundingBox, 'Node is either not visible or not an HTMLElement');
+    assert(boundingBox.width !== 0, 'Node has 0 width.');
+    assert(boundingBox.height !== 0, 'Node has 0 height.');
+
+    const layoutMetrics = await this.client.send('Page.getLayoutMetrics');
+    // Fallback to `layoutViewport` in case of using Firefox.
+    const {pageX, pageY} =
+      layoutMetrics.cssVisualViewport || layoutMetrics.layoutViewport;
+
+    const clip = Object.assign({}, boundingBox);
+    clip.x += pageX;
+    clip.y += pageY;
+
+    const imageData = await this.#page.screenshot(
+      Object.assign(
+        {},
+        {
+          clip,
+        },
+        options
+      )
+    );
+
+    if (needsViewportReset && viewport) {
+      await this.#page.setViewport(viewport);
+    }
+
+    return imageData;
+  }
+
+  /**
+   * Resolves to true if the element is visible in the current viewport.
+   */
+  async isIntersectingViewport(
+    this: ElementHandle<Element>,
+    options?: {
+      threshold?: number;
+    }
+  ): Promise<boolean> {
+    const {threshold = 0} = options ?? {};
+    return await this.evaluate(async (element, threshold) => {
+      const visibleRatio = await new Promise<number>(resolve => {
+        const observer = new IntersectionObserver(entries => {
+          resolve(entries[0]!.intersectionRatio);
+          observer.disconnect();
+        });
+        observer.observe(element);
+      });
+      return threshold === 1 ? visibleRatio === 1 : visibleRatio > threshold;
+    }, threshold);
+  }
+}
+
+function computeQuadArea(quad: Point[]): number {
+  /* Compute sum of all directed areas of adjacent triangles
+     https://en.wikipedia.org/wiki/Polygon#Simple_polygons
+   */
+  let area = 0;
+  for (let i = 0; i < quad.length; ++i) {
+    const p1 = quad[i]!;
+    const p2 = quad[(i + 1) % quad.length]!;
+    area += (p1.x * p2.y - p2.x * p1.y) / 2;
+  }
+  return Math.abs(area);
+}
diff --git a/remote/test/puppeteer/src/common/EmulationManager.ts b/remote/test/puppeteer/src/common/EmulationManager.ts
new file mode 100644
index 0000000000..ba108d3124
--- /dev/null
+++ b/remote/test/puppeteer/src/common/EmulationManager.ts
@@ -0,0 +1,62 @@
+/**
+ * Copyright 2017 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import {CDPSession} from './Connection.js';
+import {Viewport} from './PuppeteerViewport.js';
+import {Protocol} from 'devtools-protocol';
+
+/**
+ * @internal
+ */
+export class EmulationManager {
+  #client: CDPSession;
+  #emulatingMobile = false;
+  #hasTouch = false;
+
+  constructor(client: CDPSession) {
+    this.#client = client;
+  }
+
+  async emulateViewport(viewport: Viewport): Promise<boolean> {
+    const mobile = viewport.isMobile || false;
+    const width = viewport.width;
+    const height = viewport.height;
+    const deviceScaleFactor = viewport.deviceScaleFactor || 1;
+    const screenOrientation: Protocol.Emulation.ScreenOrientation =
+      viewport.isLandscape
+        ? {angle: 90, type: 'landscapePrimary'}
+        : {angle: 0, type: 'portraitPrimary'};
+    const hasTouch = viewport.hasTouch || false;
+
+    await Promise.all([
+      this.#client.send('Emulation.setDeviceMetricsOverride', {
+        mobile,
+        width,
+        height,
+        deviceScaleFactor,
+        screenOrientation,
+      }),
+      this.#client.send('Emulation.setTouchEmulationEnabled', {
+        enabled: hasTouch,
+      }),
+    ]);
+
+    const reloadNeeded =
+      this.#emulatingMobile !== mobile || this.#hasTouch !== hasTouch;
+    this.#emulatingMobile = mobile;
+    this.#hasTouch = hasTouch;
+    return reloadNeeded;
+  }
+}
diff --git a/remote/test/puppeteer/src/common/Errors.ts b/remote/test/puppeteer/src/common/Errors.ts
new file mode 100644
index 0000000000..56a6117b8f
--- /dev/null
+++ b/remote/test/puppeteer/src/common/Errors.ts
@@ -0,0 +1,84 @@
+/**
+ * Copyright 2018 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * @public
+ */
+export class CustomError extends Error {
+  constructor(message?: string) {
+    super(message);
+    this.name = this.constructor.name;
+    Error.captureStackTrace(this, this.constructor);
+  }
+}
+
+/**
+ * TimeoutError is emitted whenever certain operations are terminated due to
+ * timeout.
+ *
+ * @remarks
+ * Example operations are {@link Page.waitForSelector | page.waitForSelector} or
+ * {@link PuppeteerNode.launch | puppeteer.launch}.
+ *
+ * @public
+ */
+export class TimeoutError extends CustomError {}
+
+/**
+ * ProtocolError is emitted whenever there is an error from the protocol.
+ *
+ * @public
+ */
+export class ProtocolError extends CustomError {
+  public code?: number;
+  public originalMessage = '';
+}
+
+/**
+ * @public
+ */
+export interface PuppeteerErrors {
+  TimeoutError: typeof TimeoutError;
+  ProtocolError: typeof ProtocolError;
+}
+
+/**
+ * Puppeteer methods might throw errors if they are unable to fulfill a request.
+ * For example, `page.waitForSelector(selector[, options])` might fail if the
+ * selector doesn't match any nodes during the given timeframe.
+ *
+ * For certain types of errors Puppeteer uses specific error classes. These
+ * classes are available via `puppeteer.errors`.
+ *
+ * @example
+ * An example of handling a timeout error:
+ *
+ * ```ts
+ * try {
+ *   await page.waitForSelector('.foo');
+ * } catch (e) {
+ *   if (e instanceof puppeteer.errors.TimeoutError) {
+ *     // Do something if this is a timeout.
+ *   }
+ * }
+ * ```
+ *
+ * @public
+ */
+export const errors: PuppeteerErrors = Object.freeze({
+  TimeoutError,
+  ProtocolError,
+});
diff --git a/remote/test/puppeteer/src/common/EventEmitter.ts b/remote/test/puppeteer/src/common/EventEmitter.ts
new file mode 100644
index 0000000000..ce78874b43
--- /dev/null
+++ b/remote/test/puppeteer/src/common/EventEmitter.ts
@@ -0,0 +1,149 @@
+import mitt, {
+  Emitter,
+  EventType,
+  Handler,
+} from '../../vendor/mitt/src/index.js';
+
+/**
+ * @public
+ */
+export {EventType, Handler};
+
+/**
+ * @public
+ */
+export interface CommonEventEmitter {
+  on(event: EventType, handler: Handler): CommonEventEmitter;
+  off(event: EventType, handler: Handler): CommonEventEmitter;
+  /* To maintain parity with the built in NodeJS event emitter which uses removeListener
+   * rather than `off`.
+   * If you're implementing new code you should use `off`.
+   */
+  addListener(event: EventType, handler: Handler): CommonEventEmitter;
+  removeListener(event: EventType, handler: Handler): CommonEventEmitter;
+  emit(event: EventType, eventData?: unknown): boolean;
+  once(event: EventType, handler: Handler): CommonEventEmitter;
+  listenerCount(event: string): number;
+
+  removeAllListeners(event?: EventType): CommonEventEmitter;
+}
+
+/**
+ * The EventEmitter class that many Puppeteer classes extend.
+ *
+ * @remarks
+ *
+ * This allows you to listen to events that Puppeteer classes fire and act
+ * accordingly. Therefore you'll mostly use {@link EventEmitter.on | on} and
+ * {@link EventEmitter.off | off} to bind
+ * and unbind to event listeners.
+ *
+ * @public
+ */
+export class EventEmitter implements CommonEventEmitter {
+  private emitter: Emitter;
+  private eventsMap = new Map<EventType, Handler[]>();
+
+  /**
+   * @internal
+   */
+  constructor() {
+    this.emitter = mitt(this.eventsMap);
+  }
+
+  /**
+   * Bind an event listener to fire when an event occurs.
+   * @param event - the event type you'd like to listen to. Can be a string or symbol.
+   * @param handler - the function to be called when the event occurs.
+   * @returns `this` to enable you to chain method calls.
+   */
+  on(event: EventType, handler: Handler): EventEmitter {
+    this.emitter.on(event, handler);
+    return this;
+  }
+
+  /**
+   * Remove an event listener from firing.
+   * @param event - the event type you'd like to stop listening to.
+   * @param handler - the function that should be removed.
+   * @returns `this` to enable you to chain method calls.
+   */
+  off(event: EventType, handler: Handler): EventEmitter {
+    this.emitter.off(event, handler);
+    return this;
+  }
+
+  /**
+   * Remove an event listener.
+   * @deprecated please use {@link EventEmitter.off} instead.
+   */
+  removeListener(event: EventType, handler: Handler): EventEmitter {
+    this.off(event, handler);
+    return this;
+  }
+
+  /**
+   * Add an event listener.
+   * @deprecated please use {@link EventEmitter.on} instead.
+   */
+  addListener(event: EventType, handler: Handler): EventEmitter {
+    this.on(event, handler);
+    return this;
+  }
+
+  /**
+   * Emit an event and call any associated listeners.
+   *
+   * @param event - the event you'd like to emit
+   * @param eventData - any data you'd like to emit with the event
+   * @returns `true` if there are any listeners, `false` if there are not.
+   */
+  emit(event: EventType, eventData?: unknown): boolean {
+    this.emitter.emit(event, eventData);
+    return this.eventListenersCount(event) > 0;
+  }
+
+  /**
+   * Like `on` but the listener will only be fired once and then it will be removed.
+   * @param event - the event you'd like to listen to
+   * @param handler - the handler function to run when the event occurs
+   * @returns `this` to enable you to chain method calls.
+   */
+  once(event: EventType, handler: Handler): EventEmitter {
+    const onceHandler: Handler = eventData => {
+      handler(eventData);
+      this.off(event, onceHandler);
+    };
+
+    return this.on(event, onceHandler);
+  }
+
+  /**
+   * Gets the number of listeners for a given event.
+   *
+   * @param event - the event to get the listener count for
+   * @returns the number of listeners bound to the given event
+   */
+  listenerCount(event: EventType): number {
+    return this.eventListenersCount(event);
+  }
+
+  /**
+   * Removes all listeners. If given an event argument, it will remove only
+   * listeners for that event.
+   * @param event - the event to remove listeners for.
+   * @returns `this` to enable you to chain method calls.
+   */
+  removeAllListeners(event?: EventType): EventEmitter {
+    if (event) {
+      this.eventsMap.delete(event);
+    } else {
+      this.eventsMap.clear();
+    }
+    return this;
+  }
+
+  private eventListenersCount(event: EventType): number {
+    return this.eventsMap.get(event)?.length || 0;
+  }
+}
diff --git a/remote/test/puppeteer/src/common/ExecutionContext.ts b/remote/test/puppeteer/src/common/ExecutionContext.ts
new file mode 100644
index 0000000000..13dfbc5122
--- /dev/null
+++ b/remote/test/puppeteer/src/common/ExecutionContext.ts
@@ -0,0 +1,364 @@
+/**
+ * Copyright 2017 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import {Protocol} from 'devtools-protocol';
+import {CDPSession} from './Connection.js';
+import {IsolatedWorld} from './IsolatedWorld.js';
+import {JSHandle} from './JSHandle.js';
+import {EvaluateFunc, HandleFor} from './types.js';
+import {
+  createJSHandle,
+  getExceptionMessage,
+  isString,
+  valueFromRemoteObject,
+} from './util.js';
+
+/**
+ * @public
+ */
+export const EVALUATION_SCRIPT_URL = 'pptr://__puppeteer_evaluation_script__';
+const SOURCE_URL_REGEX = /^[\040\t]*\/\/[@#] sourceURL=\s*(\S*?)\s*$/m;
+
+/**
+ * Represents a context for JavaScript execution.
+ *
+ * @example
+ * A {@link Page} can have several execution contexts:
+ *
+ * - Each {@link Frame} of a {@link Page | page} has a "default" execution
+ *   context that is always created after frame is attached to DOM. This context
+ *   is returned by the {@link Frame.executionContext} method.
+ * - Each {@link https://developer.chrome.com/extensions | Chrome extensions}
+ *   creates additional execution contexts to isolate their code.
+ *
+ * @remarks
+ * By definition, each context is isolated from one another, however they are
+ * all able to manipulate non-JavaScript resources (such as DOM).
+ *
+ * @remarks
+ * Besides pages, execution contexts can be found in
+ * {@link WebWorker | workers}.
+ *
+ * @internal
+ */
+export class ExecutionContext {
+  /**
+   * @internal
+   */
+  _client: CDPSession;
+  /**
+   * @internal
+   */
+  _world?: IsolatedWorld;
+  /**
+   * @internal
+   */
+  _contextId: number;
+  /**
+   * @internal
+   */
+  _contextName: string;
+
+  /**
+   * @internal
+   */
+  constructor(
+    client: CDPSession,
+    contextPayload: Protocol.Runtime.ExecutionContextDescription,
+    world?: IsolatedWorld
+  ) {
+    this._client = client;
+    this._world = world;
+    this._contextId = contextPayload.id;
+    this._contextName = contextPayload.name;
+  }
+
+  /**
+   * Evaluates the given function.
+   *
+   * @example
+   *
+   * ```ts
+   * const executionContext = await page.mainFrame().executionContext();
+   * const result = await executionContext.evaluate(() => Promise.resolve(8 * 7))* ;
+   * console.log(result); // prints "56"
+   * ```
+   *
+   * @example
+   * A string can also be passed in instead of a function:
+   *
+   * ```ts
+   * console.log(await executionContext.evaluate('1 + 2')); // prints "3"
+   * ```
+   *
+   * @example
+   * Handles can also be passed as `args`. They resolve to their referenced object:
+   *
+   * ```ts
+   * const oneHandle = await executionContext.evaluateHandle(() => 1);
+   * const twoHandle = await executionContext.evaluateHandle(() => 2);
+   * const result = await executionContext.evaluate(
+   *   (a, b) => a + b,
+   *   oneHandle,
+   *   twoHandle
+   * );
+   * await oneHandle.dispose();
+   * await twoHandle.dispose();
+   * console.log(result); // prints '3'.
+   * ```
+   *
+   * @param pageFunction - The function to evaluate.
+   * @param args - Additional arguments to pass into the function.
+   * @returns The result of evaluating the function. If the result is an object,
+   * a vanilla object containing the serializable properties of the result is
+   * returned.
+   */
+  async evaluate<
+    Params extends unknown[],
+    Func extends EvaluateFunc<Params> = EvaluateFunc<Params>
+  >(
+    pageFunction: Func | string,
+    ...args: Params
+  ): Promise<Awaited<ReturnType<Func>>> {
+    return await this.#evaluate(true, pageFunction, ...args);
+  }
+
+  /**
+   * Evaluates the given function.
+   *
+   * Unlike {@link ExecutionContext.evaluate | evaluate}, this method returns a
+   * handle to the result of the function.
+   *
+   * This method may be better suited if the object cannot be serialized (e.g.
+   * `Map`) and requires further manipulation.
+   *
+   * @example
+   *
+   * ```ts
+   * const context = await page.mainFrame().executionContext();
+   * const handle: JSHandle<typeof globalThis> = await context.evaluateHandle(
+   *   () => Promise.resolve(self)
+   * );
+   * ```
+   *
+   * @example
+   * A string can also be passed in instead of a function.
+   *
+   * ```ts
+   * const handle: JSHandle<number> = await context.evaluateHandle('1 + 2');
+   * ```
+   *
+   * @example
+   * Handles can also be passed as `args`. They resolve to their referenced object:
+   *
+   * ```ts
+   * const bodyHandle: ElementHandle<HTMLBodyElement> =
+   *   await context.evaluateHandle(() => {
+   *     return document.body;
+   *   });
+   * const stringHandle: JSHandle<string> = await context.evaluateHandle(
+   *   body => body.innerHTML,
+   *   body
+   * );
+   * console.log(await stringHandle.jsonValue()); // prints body's innerHTML
+   * // Always dispose your garbage! :)
+   * await bodyHandle.dispose();
+   * await stringHandle.dispose();
+   * ```
+   *
+   * @param pageFunction - The function to evaluate.
+   * @param args - Additional arguments to pass into the function.
+   * @returns A {@link JSHandle | handle} to the result of evaluating the
+   * function. If the result is a `Node`, then this will return an
+   * {@link ElementHandle | element handle}.
+   */
+  async evaluateHandle<
+    Params extends unknown[],
+    Func extends EvaluateFunc<Params> = EvaluateFunc<Params>
+  >(
+    pageFunction: Func | string,
+    ...args: Params
+  ): Promise<HandleFor<Awaited<ReturnType<Func>>>> {
+    return this.#evaluate(false, pageFunction, ...args);
+  }
+
+  async #evaluate<
+    Params extends unknown[],
+    Func extends EvaluateFunc<Params> = EvaluateFunc<Params>
+  >(
+    returnByValue: true,
+    pageFunction: Func | string,
+    ...args: Params
+  ): Promise<Awaited<ReturnType<Func>>>;
+  async #evaluate<
+    Params extends unknown[],
+    Func extends EvaluateFunc<Params> = EvaluateFunc<Params>
+  >(
+    returnByValue: false,
+    pageFunction: Func | string,
+    ...args: Params
+  ): Promise<HandleFor<Awaited<ReturnType<Func>>>>;
+  async #evaluate<
+    Params extends unknown[],
+    Func extends EvaluateFunc<Params> = EvaluateFunc<Params>
+  >(
+    returnByValue: boolean,
+    pageFunction: Func | string,
+    ...args: Params
+  ): Promise<HandleFor<Awaited<ReturnType<Func>>> | Awaited<ReturnType<Func>>> {
+    const suffix = `//# sourceURL=${EVALUATION_SCRIPT_URL}`;
+
+    if (isString(pageFunction)) {
+      const contextId = this._contextId;
+      const expression = pageFunction;
+      const expressionWithSourceUrl = SOURCE_URL_REGEX.test(expression)
+        ? expression
+        : expression + '\n' + suffix;
+
+      const {exceptionDetails, result: remoteObject} = await this._client
+        .send('Runtime.evaluate', {
+          expression: expressionWithSourceUrl,
+          contextId,
+          returnByValue,
+          awaitPromise: true,
+          userGesture: true,
+        })
+        .catch(rewriteError);
+
+      if (exceptionDetails) {
+        throw new Error(
+          'Evaluation failed: ' + getExceptionMessage(exceptionDetails)
+        );
+      }
+
+      return returnByValue
+        ? valueFromRemoteObject(remoteObject)
+        : createJSHandle(this, remoteObject);
+    }
+
+    let functionText = pageFunction.toString();
+    try {
+      new Function('(' + functionText + ')');
+    } catch (error) {
+      // This means we might have a function shorthand. Try another
+      // time prefixing 'function '.
+      if (functionText.startsWith('async ')) {
+        functionText =
+          'async function ' + functionText.substring('async '.length);
+      } else {
+        functionText = 'function ' + functionText;
+      }
+      try {
+        new Function('(' + functionText + ')');
+      } catch (error) {
+        // We tried hard to serialize, but there's a weird beast here.
+        throw new Error('Passed function is not well-serializable!');
+      }
+    }
+    let callFunctionOnPromise;
+    try {
+      callFunctionOnPromise = this._client.send('Runtime.callFunctionOn', {
+        functionDeclaration: functionText + '\n' + suffix + '\n',
+        executionContextId: this._contextId,
+        arguments: args.map(convertArgument.bind(this)),
+        returnByValue,
+        awaitPromise: true,
+        userGesture: true,
+      });
+    } catch (error) {
+      if (
+        error instanceof TypeError &&
+        error.message.startsWith('Converting circular structure to JSON')
+      ) {
+        error.message += ' Recursive objects are not allowed.';
+      }
+      throw error;
+    }
+    const {exceptionDetails, result: remoteObject} =
+      await callFunctionOnPromise.catch(rewriteError);
+    if (exceptionDetails) {
+      throw new Error(
+        'Evaluation failed: ' + getExceptionMessage(exceptionDetails)
+      );
+    }
+    return returnByValue
+      ? valueFromRemoteObject(remoteObject)
+      : createJSHandle(this, remoteObject);
+
+    function convertArgument(
+      this: ExecutionContext,
+      arg: unknown
+    ): Protocol.Runtime.CallArgument {
+      if (typeof arg === 'bigint') {
+        // eslint-disable-line valid-typeof
+        return {unserializableValue: `${arg.toString()}n`};
+      }
+      if (Object.is(arg, -0)) {
+        return {unserializableValue: '-0'};
+      }
+      if (Object.is(arg, Infinity)) {
+        return {unserializableValue: 'Infinity'};
+      }
+      if (Object.is(arg, -Infinity)) {
+        return {unserializableValue: '-Infinity'};
+      }
+      if (Object.is(arg, NaN)) {
+        return {unserializableValue: 'NaN'};
+      }
+      const objectHandle = arg && arg instanceof JSHandle ? arg : null;
+      if (objectHandle) {
+        if (objectHandle.executionContext() !== this) {
+          throw new Error(
+            'JSHandles can be evaluated only in the context they were created!'
+          );
+        }
+        if (objectHandle.disposed) {
+          throw new Error('JSHandle is disposed!');
+        }
+        if (objectHandle.remoteObject().unserializableValue) {
+          return {
+            unserializableValue:
+              objectHandle.remoteObject().unserializableValue,
+          };
+        }
+        if (!objectHandle.remoteObject().objectId) {
+          return {value: objectHandle.remoteObject().value};
+        }
+        return {objectId: objectHandle.remoteObject().objectId};
+      }
+      return {value: arg};
+    }
+  }
+}
+
+const rewriteError = (error: Error): Protocol.Runtime.EvaluateResponse => {
+  if (error.message.includes('Object reference chain is too long')) {
+    return {result: {type: 'undefined'}};
+  }
+  if (error.message.includes("Object couldn't be returned by value")) {
+    return {result: {type: 'undefined'}};
+  }
+
+  if (
+    error.message.endsWith('Cannot find context with specified id') ||
+    error.message.endsWith('Inspected target navigated or closed')
+  ) {
+    throw new Error(
+      'Execution context was destroyed, most likely because of a navigation.'
+    );
+  }
+  throw error;
+};
diff --git a/remote/test/puppeteer/src/common/FileChooser.ts b/remote/test/puppeteer/src/common/FileChooser.ts
new file mode 100644
index 0000000000..c0a68ff967
--- /dev/null
+++ b/remote/test/puppeteer/src/common/FileChooser.ts
@@ -0,0 +1,94 @@
+/**
+ * Copyright 2020 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import {Protocol} from 'devtools-protocol';
+import {assert} from '../util/assert.js';
+import {ElementHandle} from './ElementHandle.js';
+
+/**
+ * File choosers let you react to the page requesting for a file.
+ *
+ * @remarks
+ * `FileChooser` instances are returned via the {@link Page.waitForFileChooser} method.
+ *
+ * In browsers, only one file chooser can be opened at a time.
+ * All file choosers must be accepted or canceled. Not doing so will prevent
+ * subsequent file choosers from appearing.
+ *
+ * @example
+ *
+ * ```ts
+ * const [fileChooser] = await Promise.all([
+ *   page.waitForFileChooser(),
+ *   page.click('#upload-file-button'), // some button that triggers file selection
+ * ]);
+ * await fileChooser.accept(['/tmp/myfile.pdf']);
+ * ```
+ *
+ * @public
+ */
+export class FileChooser {
+  #element: ElementHandle<HTMLInputElement>;
+  #multiple: boolean;
+  #handled = false;
+
+  /**
+   * @internal
+   */
+  constructor(
+    element: ElementHandle<HTMLInputElement>,
+    event: Protocol.Page.FileChooserOpenedEvent
+  ) {
+    this.#element = element;
+    this.#multiple = event.mode !== 'selectSingle';
+  }
+
+  /**
+   * Whether file chooser allow for
+   * {@link https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input/file#attr-multiple | multiple}
+   * file selection.
+   */
+  isMultiple(): boolean {
+    return this.#multiple;
+  }
+
+  /**
+   * Accept the file chooser request with given paths.
+   *
+   * @param filePaths - If some of the `filePaths` are relative paths, then
+   * they are resolved relative to the
+   * {@link https://nodejs.org/api/process.html#process_process_cwd | current working directory}.
+   */
+  async accept(filePaths: string[]): Promise<void> {
+    assert(
+      !this.#handled,
+      'Cannot accept FileChooser which is already handled!'
+    );
+    this.#handled = true;
+    await this.#element.uploadFile(...filePaths);
+  }
+
+  /**
+   * Closes the file chooser without selecting any files.
+   */
+  cancel(): void {
+    assert(
+      !this.#handled,
+      'Cannot cancel FileChooser which is already handled!'
+    );
+    this.#handled = true;
+  }
+}
diff --git a/remote/test/puppeteer/src/common/FirefoxTargetManager.ts b/remote/test/puppeteer/src/common/FirefoxTargetManager.ts
new file mode 100644
index 0000000000..e31a205aa1
--- /dev/null
+++ b/remote/test/puppeteer/src/common/FirefoxTargetManager.ts
@@ -0,0 +1,256 @@
+/**
+ * Copyright 2022 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import Protocol from 'devtools-protocol';
+import {assert} from '../util/assert.js';
+import {CDPSession, Connection} from './Connection.js';
+import {Target} from './Target.js';
+import {TargetFilterCallback} from './Browser.js';
+import {
+  TargetFactory,
+  TargetInterceptor,
+  TargetManagerEmittedEvents,
+  TargetManager,
+} from './TargetManager.js';
+import {EventEmitter} from './EventEmitter.js';
+
+/**
+ * FirefoxTargetManager implements target management using
+ * `Target.setDiscoverTargets` without using auto-attach. It, therefore, creates
+ * targets that lazily establish their CDP sessions.
+ *
+ * Although the approach is potentially flaky, there is no other way for Firefox
+ * because Firefox's CDP implementation does not support auto-attach.
+ *
+ * Firefox does not support targetInfoChanged and detachedFromTarget events:
+ *
+ * - https://bugzilla.mozilla.org/show_bug.cgi?id=1610855
+ * - https://bugzilla.mozilla.org/show_bug.cgi?id=1636979
+ *   @internal
+ */
+export class FirefoxTargetManager
+  extends EventEmitter
+  implements TargetManager
+{
+  #connection: Connection;
+  /**
+   * Keeps track of the following events: 'Target.targetCreated',
+   * 'Target.targetDestroyed'.
+   *
+   * A target becomes discovered when 'Target.targetCreated' is received.
+   * A target is removed from this map once 'Target.targetDestroyed' is
+   * received.
+   *
+   * `targetFilterCallback` has no effect on this map.
+   */
+  #discoveredTargetsByTargetId: Map<string, Protocol.Target.TargetInfo> =
+    new Map();
+  /**
+   * Keeps track of targets that were created via 'Target.targetCreated'
+   * and which one are not filtered out by `targetFilterCallback`.
+   *
+   * The target is removed from here once it's been destroyed.
+   */
+  #availableTargetsByTargetId: Map<string, Target> = new Map();
+  /**
+   * Tracks which sessions attach to which target.
+   */
+  #availableTargetsBySessionId: Map<string, Target> = new Map();
+  /**
+   * If a target was filtered out by `targetFilterCallback`, we still receive
+   * events about it from CDP, but we don't forward them to the rest of Puppeteer.
+   */
+  #ignoredTargets = new Set<string>();
+  #targetFilterCallback: TargetFilterCallback | undefined;
+  #targetFactory: TargetFactory;
+
+  #targetInterceptors: WeakMap<CDPSession | Connection, TargetInterceptor[]> =
+    new WeakMap();
+
+  #attachedToTargetListenersBySession: WeakMap<
+    CDPSession | Connection,
+    (event: Protocol.Target.AttachedToTargetEvent) => Promise<void>
+  > = new WeakMap();
+
+  #initializeCallback = () => {};
+  #initializePromise: Promise<void> = new Promise(resolve => {
+    this.#initializeCallback = resolve;
+  });
+  #targetsIdsForInit: Set<string> = new Set();
+
+  constructor(
+    connection: Connection,
+    targetFactory: TargetFactory,
+    targetFilterCallback?: TargetFilterCallback
+  ) {
+    super();
+    this.#connection = connection;
+    this.#targetFilterCallback = targetFilterCallback;
+    this.#targetFactory = targetFactory;
+
+    this.#connection.on('Target.targetCreated', this.#onTargetCreated);
+    this.#connection.on('Target.targetDestroyed', this.#onTargetDestroyed);
+    this.#connection.on('sessiondetached', this.#onSessionDetached);
+    this.setupAttachmentListeners(this.#connection);
+  }
+
+  addTargetInterceptor(
+    client: CDPSession | Connection,
+    interceptor: TargetInterceptor
+  ): void {
+    const interceptors = this.#targetInterceptors.get(client) || [];
+    interceptors.push(interceptor);
+    this.#targetInterceptors.set(client, interceptors);
+  }
+
+  removeTargetInterceptor(
+    client: CDPSession | Connection,
+    interceptor: TargetInterceptor
+  ): void {
+    const interceptors = this.#targetInterceptors.get(client) || [];
+    this.#targetInterceptors.set(
+      client,
+      interceptors.filter(currentInterceptor => {
+        return currentInterceptor !== interceptor;
+      })
+    );
+  }
+
+  setupAttachmentListeners(session: CDPSession | Connection): void {
+    const listener = (event: Protocol.Target.AttachedToTargetEvent) => {
+      return this.#onAttachedToTarget(session, event);
+    };
+    assert(!this.#attachedToTargetListenersBySession.has(session));
+    this.#attachedToTargetListenersBySession.set(session, listener);
+    session.on('Target.attachedToTarget', listener);
+  }
+
+  #onSessionDetached = (session: CDPSession) => {
+    this.removeSessionListeners(session);
+    this.#targetInterceptors.delete(session);
+    this.#availableTargetsBySessionId.delete(session.id());
+  };
+
+  removeSessionListeners(session: CDPSession): void {
+    if (this.#attachedToTargetListenersBySession.has(session)) {
+      session.off(
+        'Target.attachedToTarget',
+        this.#attachedToTargetListenersBySession.get(session)!
+      );
+      this.#attachedToTargetListenersBySession.delete(session);
+    }
+  }
+
+  getAvailableTargets(): Map<string, Target> {
+    return this.#availableTargetsByTargetId;
+  }
+
+  dispose(): void {
+    this.#connection.off('Target.targetCreated', this.#onTargetCreated);
+    this.#connection.off('Target.targetDestroyed', this.#onTargetDestroyed);
+  }
+
+  async initialize(): Promise<void> {
+    await this.#connection.send('Target.setDiscoverTargets', {discover: true});
+    this.#targetsIdsForInit = new Set(this.#discoveredTargetsByTargetId.keys());
+    await this.#initializePromise;
+  }
+
+  #onTargetCreated = async (
+    event: Protocol.Target.TargetCreatedEvent
+  ): Promise<void> => {
+    if (this.#discoveredTargetsByTargetId.has(event.targetInfo.targetId)) {
+      return;
+    }
+
+    this.#discoveredTargetsByTargetId.set(
+      event.targetInfo.targetId,
+      event.targetInfo
+    );
+
+    if (event.targetInfo.type === 'browser' && event.targetInfo.attached) {
+      const target = this.#targetFactory(event.targetInfo, undefined);
+      this.#availableTargetsByTargetId.set(event.targetInfo.targetId, target);
+      this.#finishInitializationIfReady(target._targetId);
+      return;
+    }
+
+    if (
+      this.#targetFilterCallback &&
+      !this.#targetFilterCallback(event.targetInfo)
+    ) {
+      this.#ignoredTargets.add(event.targetInfo.targetId);
+      this.#finishInitializationIfReady(event.targetInfo.targetId);
+      return;
+    }
+
+    const target = this.#targetFactory(event.targetInfo, undefined);
+    this.#availableTargetsByTargetId.set(event.targetInfo.targetId, target);
+    this.emit(TargetManagerEmittedEvents.TargetAvailable, target);
+    this.#finishInitializationIfReady(target._targetId);
+  };
+
+  #onTargetDestroyed = (event: Protocol.Target.TargetDestroyedEvent): void => {
+    this.#discoveredTargetsByTargetId.delete(event.targetId);
+    this.#finishInitializationIfReady(event.targetId);
+    const target = this.#availableTargetsByTargetId.get(event.targetId);
+    if (target) {
+      this.emit(TargetManagerEmittedEvents.TargetGone, target);
+      this.#availableTargetsByTargetId.delete(event.targetId);
+    }
+  };
+
+  #onAttachedToTarget = async (
+    parentSession: Connection | CDPSession,
+    event: Protocol.Target.AttachedToTargetEvent
+  ) => {
+    const targetInfo = event.targetInfo;
+    const session = this.#connection.session(event.sessionId);
+    if (!session) {
+      throw new Error(`Session ${event.sessionId} was not created.`);
+    }
+
+    const target = this.#availableTargetsByTargetId.get(targetInfo.targetId);
+
+    assert(target, `Target ${targetInfo.targetId} is missing`);
+
+    this.setupAttachmentListeners(session);
+
+    this.#availableTargetsBySessionId.set(
+      session.id(),
+      this.#availableTargetsByTargetId.get(targetInfo.targetId)!
+    );
+
+    for (const hook of this.#targetInterceptors.get(parentSession) || []) {
+      if (!(parentSession instanceof Connection)) {
+        assert(this.#availableTargetsBySessionId.has(parentSession.id()));
+      }
+      await hook(
+        target,
+        parentSession instanceof Connection
+          ? null
+          : this.#availableTargetsBySessionId.get(parentSession.id())!
+      );
+    }
+  };
+
+  #finishInitializationIfReady(targetId: string): void {
+    this.#targetsIdsForInit.delete(targetId);
+    if (this.#targetsIdsForInit.size === 0) {
+      this.#initializeCallback();
+    }
+  }
+}
diff --git a/remote/test/puppeteer/src/common/Frame.ts b/remote/test/puppeteer/src/common/Frame.ts
new file mode 100644
index 0000000000..9d2d7759f0
--- /dev/null
+++ b/remote/test/puppeteer/src/common/Frame.ts
@@ -0,0 +1,1097 @@
+import {Protocol} from 'devtools-protocol';
+import {assert} from '../util/assert.js';
+import {isErrorLike} from '../util/ErrorLike.js';
+import {CDPSession} from './Connection.js';
+import {ElementHandle} from './ElementHandle.js';
+import {ExecutionContext} from './ExecutionContext.js';
+import {FrameManager} from './FrameManager.js';
+import {HTTPResponse} from './HTTPResponse.js';
+import {MouseButton} from './Input.js';
+import {
+  IsolatedWorld,
+  IsolatedWorldChart,
+  MAIN_WORLD,
+  PUPPETEER_WORLD,
+  WaitForSelectorOptions,
+} from './IsolatedWorld.js';
+import {LifecycleWatcher, PuppeteerLifeCycleEvent} from './LifecycleWatcher.js';
+import {Page} from './Page.js';
+import {getQueryHandlerAndSelector} from './QueryHandler.js';
+import {EvaluateFunc, HandleFor, NodeFor} from './types.js';
+import {importFS} from './util.js';
+
+/**
+ * @public
+ */
+export interface FrameWaitForFunctionOptions {
+  /**
+   * An interval at which the `pageFunction` is executed, defaults to `raf`. If
+   * `polling` is a number, then it is treated as an interval in milliseconds at
+   * which the function would be executed. If `polling` is a string, then it can
+   * be one of the following values:
+   *
+   * - `raf` - to constantly execute `pageFunction` in `requestAnimationFrame`
+   *   callback. This is the tightest polling mode which is suitable to observe
+   *   styling changes.
+   *
+   * - `mutation` - to execute `pageFunction` on every DOM mutation.
+   */
+  polling?: string | number;
+  /**
+   * Maximum time to wait in milliseconds. Defaults to `30000` (30 seconds).
+   * Pass `0` to disable the timeout. Puppeteer's default timeout can be changed
+   * using {@link Page.setDefaultTimeout}.
+   */
+  timeout?: number;
+}
+
+/**
+ * @public
+ */
+export interface FrameAddScriptTagOptions {
+  /**
+   * URL of the script to be added.
+   */
+  url?: string;
+  /**
+   * Path to a JavaScript file to be injected into the frame.
+   *
+   * @remarks
+   * If `path` is a relative path, it is resolved relative to the current
+   * working directory (`process.cwd()` in Node.js).
+   */
+  path?: string;
+  /**
+   * JavaScript to be injected into the frame.
+   */
+  content?: string;
+  /**
+   * Sets the `type` of the script. Use `module` in order to load an ES2015 module.
+   */
+  type?: string;
+  /**
+   * Sets the `id` of the script.
+   */
+  id?: string;
+}
+
+/**
+ * @public
+ */
+export interface FrameAddStyleTagOptions {
+  /**
+   * the URL of the CSS file to be added.
+   */
+  url?: string;
+  /**
+   * The path to a CSS file to be injected into the frame.
+   * @remarks
+   * If `path` is a relative path, it is resolved relative to the current
+   * working directory (`process.cwd()` in Node.js).
+   */
+  path?: string;
+  /**
+   * Raw CSS content to be injected into the frame.
+   */
+  content?: string;
+}
+
+/**
+ * Represents a DOM frame.
+ *
+ * To understand frames, you can think of frames as `<iframe>` elements. Just
+ * like iframes, frames can be nested, and when JavaScript is executed in a
+ * frame, the JavaScript does not effect frames inside the ambient frame the
+ * JavaScript executes in.
+ *
+ * @example
+ * At any point in time, {@link Page | pages} expose their current frame
+ * tree via the {@link Page.mainFrame} and {@link Frame.childFrames} methods.
+ *
+ * @example
+ * An example of dumping frame tree:
+ *
+ * ```ts
+ * const puppeteer = require('puppeteer');
+ *
+ * (async () => {
+ *   const browser = await puppeteer.launch();
+ *   const page = await browser.newPage();
+ *   await page.goto('https://www.google.com/chrome/browser/canary.html');
+ *   dumpFrameTree(page.mainFrame(), '');
+ *   await browser.close();
+ *
+ *   function dumpFrameTree(frame, indent) {
+ *     console.log(indent + frame.url());
+ *     for (const child of frame.childFrames()) {
+ *       dumpFrameTree(child, indent + '  ');
+ *     }
+ *   }
+ * })();
+ * ```
+ *
+ * @example
+ * An example of getting text from an iframe element:
+ *
+ * ```ts
+ * const frame = page.frames().find(frame => frame.name() === 'myframe');
+ * const text = await frame.$eval('.selector', element => element.textContent);
+ * console.log(text);
+ * ```
+ *
+ * @remarks
+ * Frame lifecycles are controlled by three events that are all dispatched on
+ * the parent {@link Frame.page | page}:
+ *
+ * - {@link PageEmittedEvents.FrameAttached}
+ * - {@link PageEmittedEvents.FrameNavigated}
+ * - {@link PageEmittedEvents.FrameDetached}
+ *
+ * @public
+ */
+export class Frame {
+  #parentFrame: Frame | null;
+  #url = '';
+  #detached = false;
+  #client!: CDPSession;
+
+  /**
+   * @internal
+   */
+  worlds!: IsolatedWorldChart;
+  /**
+   * @internal
+   */
+  _frameManager: FrameManager;
+  /**
+   * @internal
+   */
+  _id: string;
+  /**
+   * @internal
+   */
+  _loaderId = '';
+  /**
+   * @internal
+   */
+  _name?: string;
+  /**
+   * @internal
+   */
+  _hasStartedLoading = false;
+  /**
+   * @internal
+   */
+  _lifecycleEvents = new Set<string>();
+  /**
+   * @internal
+   */
+  _childFrames: Set<Frame>;
+
+  /**
+   * @internal
+   */
+  constructor(
+    frameManager: FrameManager,
+    parentFrame: Frame | null,
+    frameId: string,
+    client: CDPSession
+  ) {
+    this._frameManager = frameManager;
+    this.#parentFrame = parentFrame ?? null;
+    this.#url = '';
+    this._id = frameId;
+    this.#detached = false;
+
+    this._loaderId = '';
+
+    this._childFrames = new Set();
+    if (this.#parentFrame) {
+      this.#parentFrame._childFrames.add(this);
+    }
+
+    this.updateClient(client);
+  }
+
+  /**
+   * @internal
+   */
+  updateClient(client: CDPSession): void {
+    this.#client = client;
+    this.worlds = {
+      [MAIN_WORLD]: new IsolatedWorld(this),
+      [PUPPETEER_WORLD]: new IsolatedWorld(this, true),
+    };
+  }
+
+  /**
+   * @returns The page associated with the frame.
+   */
+  page(): Page {
+    return this._frameManager.page();
+  }
+
+  /**
+   * @returns `true` if the frame is an out-of-process (OOP) frame. Otherwise,
+   * `false`.
+   */
+  isOOPFrame(): boolean {
+    return this.#client !== this._frameManager.client;
+  }
+
+  /**
+   * Navigates a frame to the given url.
+   *
+   * @remarks
+   * Navigation to `about:blank` or navigation to the same URL with a different
+   * hash will succeed and return `null`.
+   *
+   * :::warning
+   *
+   * Headless mode doesn't support navigation to a PDF document. See the {@link
+   * https://bugs.chromium.org/p/chromium/issues/detail?id=761295 | upstream
+   * issue}.
+   *
+   * :::
+   *
+   * @param url - the URL to navigate the frame to. This should include the
+   * scheme, e.g. `https://`.
+   * @param options - navigation options. `waitUntil` is useful to define when
+   * the navigation should be considered successful - see the docs for
+   * {@link PuppeteerLifeCycleEvent} for more details.
+   *
+   * @returns A promise which resolves to the main resource response. In case of
+   * multiple redirects, the navigation will resolve with the response of the
+   * last redirect.
+   * @throws This method will throw an error if:
+   *
+   * - there's an SSL error (e.g. in case of self-signed certificates).
+   * - target URL is invalid.
+   * - the `timeout` is exceeded during navigation.
+   * - the remote server does not respond or is unreachable.
+   * - the main resource failed to load.
+   *
+   * This method will not throw an error when any valid HTTP status code is
+   * returned by the remote server, including 404 "Not Found" and 500 "Internal
+   * Server Error". The status code for such responses can be retrieved by
+   * calling {@link HTTPResponse.status}.
+   */
+  async goto(
+    url: string,
+    options: {
+      referer?: string;
+      timeout?: number;
+      waitUntil?: PuppeteerLifeCycleEvent | PuppeteerLifeCycleEvent[];
+    } = {}
+  ): Promise<HTTPResponse | null> {
+    const {
+      referer = this._frameManager.networkManager.extraHTTPHeaders()['referer'],
+      waitUntil = ['load'],
+      timeout = this._frameManager.timeoutSettings.navigationTimeout(),
+    } = options;
+
+    let ensureNewDocumentNavigation = false;
+    const watcher = new LifecycleWatcher(
+      this._frameManager,
+      this,
+      waitUntil,
+      timeout
+    );
+    let error = await Promise.race([
+      navigate(this.#client, url, referer, this._id),
+      watcher.timeoutOrTerminationPromise(),
+    ]);
+    if (!error) {
+      error = await Promise.race([
+        watcher.timeoutOrTerminationPromise(),
+        ensureNewDocumentNavigation
+          ? watcher.newDocumentNavigationPromise()
+          : watcher.sameDocumentNavigationPromise(),
+      ]);
+    }
+
+    try {
+      if (error) {
+        throw error;
+      }
+      return await watcher.navigationResponse();
+    } finally {
+      watcher.dispose();
+    }
+
+    async function navigate(
+      client: CDPSession,
+      url: string,
+      referrer: string | undefined,
+      frameId: string
+    ): Promise<Error | null> {
+      try {
+        const response = await client.send('Page.navigate', {
+          url,
+          referrer,
+          frameId,
+        });
+        ensureNewDocumentNavigation = !!response.loaderId;
+        return response.errorText
+          ? new Error(`${response.errorText} at ${url}`)
+          : null;
+      } catch (error) {
+        if (isErrorLike(error)) {
+          return error;
+        }
+        throw error;
+      }
+    }
+  }
+
+  /**
+   * Waits for the frame to navigate. It is useful for when you run code which
+   * will indirectly cause the frame to navigate.
+   *
+   * Usage of the
+   * {@link https://developer.mozilla.org/en-US/docs/Web/API/History_API | History API}
+   * to change the URL is considered a navigation.
+   *
+   * @example
+   *
+   * ```ts
+   * const [response] = await Promise.all([
+   *   // The navigation promise resolves after navigation has finished
+   *   frame.waitForNavigation(),
+   *   // Clicking the link will indirectly cause a navigation
+   *   frame.click('a.my-link'),
+   * ]);
+   * ```
+   *
+   * @param options - options to configure when the navigation is consided
+   * finished.
+   * @returns a promise that resolves when the frame navigates to a new URL.
+   */
+  async waitForNavigation(
+    options: {
+      timeout?: number;
+      waitUntil?: PuppeteerLifeCycleEvent | PuppeteerLifeCycleEvent[];
+    } = {}
+  ): Promise<HTTPResponse | null> {
+    const {
+      waitUntil = ['load'],
+      timeout = this._frameManager.timeoutSettings.navigationTimeout(),
+    } = options;
+    const watcher = new LifecycleWatcher(
+      this._frameManager,
+      this,
+      waitUntil,
+      timeout
+    );
+    const error = await Promise.race([
+      watcher.timeoutOrTerminationPromise(),
+      watcher.sameDocumentNavigationPromise(),
+      watcher.newDocumentNavigationPromise(),
+    ]);
+    try {
+      if (error) {
+        throw error;
+      }
+      return await watcher.navigationResponse();
+    } finally {
+      watcher.dispose();
+    }
+  }
+
+  /**
+   * @internal
+   */
+  _client(): CDPSession {
+    return this.#client;
+  }
+
+  /**
+   * @internal
+   */
+  executionContext(): Promise<ExecutionContext> {
+    return this.worlds[MAIN_WORLD].executionContext();
+  }
+
+  /**
+   * Behaves identically to {@link Page.evaluateHandle} except it's run within
+   * the context of this frame.
+   *
+   * @see {@link Page.evaluateHandle} for details.
+   */
+  async evaluateHandle<
+    Params extends unknown[],
+    Func extends EvaluateFunc<Params> = EvaluateFunc<Params>
+  >(
+    pageFunction: Func | string,
+    ...args: Params
+  ): Promise<HandleFor<Awaited<ReturnType<Func>>>> {
+    return this.worlds[MAIN_WORLD].evaluateHandle(pageFunction, ...args);
+  }
+
+  /**
+   * Behaves identically to {@link Page.evaluate} except it's run within the
+   * the context of this frame.
+   *
+   * @see {@link Page.evaluate} for details.
+   */
+  async evaluate<
+    Params extends unknown[],
+    Func extends EvaluateFunc<Params> = EvaluateFunc<Params>
+  >(
+    pageFunction: Func | string,
+    ...args: Params
+  ): Promise<Awaited<ReturnType<Func>>> {
+    return this.worlds[MAIN_WORLD].evaluate(pageFunction, ...args);
+  }
+
+  /**
+   * Queries the frame for an element matching the given selector.
+   *
+   * @param selector - The selector to query for.
+   * @returns A {@link ElementHandle | element handle} to the first element
+   * matching the given selector. Otherwise, `null`.
+   */
+  async $<Selector extends string>(
+    selector: Selector
+  ): Promise<ElementHandle<NodeFor<Selector>> | null> {
+    return this.worlds[MAIN_WORLD].$(selector);
+  }
+
+  /**
+   * Queries the frame for all elements matching the given selector.
+   *
+   * @param selector - The selector to query for.
+   * @returns An array of {@link ElementHandle | element handles} that point to
+   * elements matching the given selector.
+   */
+  async $$<Selector extends string>(
+    selector: Selector
+  ): Promise<Array<ElementHandle<NodeFor<Selector>>>> {
+    return this.worlds[MAIN_WORLD].$$(selector);
+  }
+
+  /**
+   * Runs the given function on the first element matching the given selector in
+   * the frame.
+   *
+   * If the given function returns a promise, then this method will wait till
+   * the promise resolves.
+   *
+   * @example
+   *
+   * ```ts
+   * const searchValue = await frame.$eval('#search', el => el.value);
+   * ```
+   *
+   * @param selector - The selector to query for.
+   * @param pageFunction - The function to be evaluated in the frame's context.
+   * The first element matching the selector will be passed to the function as
+   * its first argument.
+   * @param args - Additional arguments to pass to `pageFunction`.
+   * @returns A promise to the result of the function.
+   */
+  async $eval<
+    Selector extends string,
+    Params extends unknown[],
+    Func extends EvaluateFunc<
+      [ElementHandle<NodeFor<Selector>>, ...Params]
+    > = EvaluateFunc<[ElementHandle<NodeFor<Selector>>, ...Params]>
+  >(
+    selector: Selector,
+    pageFunction: Func | string,
+    ...args: Params
+  ): Promise<Awaited<ReturnType<Func>>> {
+    return this.worlds[MAIN_WORLD].$eval(selector, pageFunction, ...args);
+  }
+
+  /**
+   * Runs the given function on an array of elements matching the given selector
+   * in the frame.
+   *
+   * If the given function returns a promise, then this method will wait till
+   * the promise resolves.
+   *
+   * @example
+   *
+   * ```js
+   * const divsCounts = await frame.$$eval('div', divs => divs.length);
+   * ```
+   *
+   * @param selector - The selector to query for.
+   * @param pageFunction - The function to be evaluated in the frame's context.
+   * An array of elements matching the given selector will be passed to the
+   * function as its first argument.
+   * @param args - Additional arguments to pass to `pageFunction`.
+   * @returns A promise to the result of the function.
+   */
+  async $$eval<
+    Selector extends string,
+    Params extends unknown[],
+    Func extends EvaluateFunc<
+      [Array<NodeFor<Selector>>, ...Params]
+    > = EvaluateFunc<[Array<NodeFor<Selector>>, ...Params]>
+  >(
+    selector: Selector,
+    pageFunction: Func | string,
+    ...args: Params
+  ): Promise<Awaited<ReturnType<Func>>> {
+    return this.worlds[MAIN_WORLD].$$eval(selector, pageFunction, ...args);
+  }
+
+  /**
+   * @deprecated Use {@link Frame.$$} with the `xpath` prefix.
+   *
+   * This method evaluates the given XPath expression and returns the results.
+   * @param expression - the XPath expression to evaluate.
+   */
+  async $x(expression: string): Promise<Array<ElementHandle<Node>>> {
+    return this.worlds[MAIN_WORLD].$x(expression);
+  }
+
+  /**
+   * Waits for an element matching the given selector to appear in the frame.
+   *
+   * This method works across navigations.
+   *
+   * @example
+   *
+   * ```ts
+   * const puppeteer = require('puppeteer');
+   *
+   * (async () => {
+   *   const browser = await puppeteer.launch();
+   *   const page = await browser.newPage();
+   *   let currentURL;
+   *   page
+   *     .mainFrame()
+   *     .waitForSelector('img')
+   *     .then(() => console.log('First URL with image: ' + currentURL));
+   *
+   *   for (currentURL of [
+   *     'https://example.com',
+   *     'https://google.com',
+   *     'https://bbc.com',
+   *   ]) {
+   *     await page.goto(currentURL);
+   *   }
+   *   await browser.close();
+   * })();
+   * ```
+   *
+   * @param selector - The selector to query and wait for.
+   * @param options - Options for customizing waiting behavior.
+   * @returns An element matching the given selector.
+   * @throws Throws if an element matching the given selector doesn't appear.
+   */
+  async waitForSelector<Selector extends string>(
+    selector: Selector,
+    options: WaitForSelectorOptions = {}
+  ): Promise<ElementHandle<NodeFor<Selector>> | null> {
+    const {updatedSelector, queryHandler} =
+      getQueryHandlerAndSelector(selector);
+    assert(queryHandler.waitFor, 'Query handler does not support waiting');
+    return (await queryHandler.waitFor(
+      this,
+      updatedSelector,
+      options
+    )) as ElementHandle<NodeFor<Selector>> | null;
+  }
+
+  /**
+   * @deprecated Use {@link Frame.waitForSelector} with the `xpath` prefix.
+   *
+   * Wait for the `xpath` to appear in page. If at the moment of calling the
+   * method the `xpath` already exists, the method will return immediately. If
+   * the xpath doesn't appear after the `timeout` milliseconds of waiting, the
+   * function will throw.
+   *
+   * For a code example, see the example for {@link Frame.waitForSelector}. That
+   * function behaves identically other than taking a CSS selector rather than
+   * an XPath.
+   *
+   * @param xpath - the XPath expression to wait for.
+   * @param options - options to configure the visiblity of the element and how
+   * long to wait before timing out.
+   */
+  async waitForXPath(
+    xpath: string,
+    options: WaitForSelectorOptions = {}
+  ): Promise<ElementHandle<Node> | null> {
+    if (xpath.startsWith('//')) {
+      xpath = `.${xpath}`;
+    }
+    return this.waitForSelector(`xpath/${xpath}`, options);
+  }
+
+  /**
+   * @example
+   * The `waitForFunction` can be used to observe viewport size change:
+   *
+   * ```ts
+   * const puppeteer = require('puppeteer');
+   *
+   * (async () => {
+   * .  const browser = await puppeteer.launch();
+   * .  const page = await browser.newPage();
+   * .  const watchDog = page.mainFrame().waitForFunction('window.innerWidth < 100');
+   * .  page.setViewport({width: 50, height: 50});
+   * .  await watchDog;
+   * .  await browser.close();
+   * })();
+   * ```
+   *
+   * To pass arguments from Node.js to the predicate of `page.waitForFunction` function:
+   *
+   * ```ts
+   * const selector = '.foo';
+   * await frame.waitForFunction(
+   *   selector => !!document.querySelector(selector),
+   *   {}, // empty options object
+   *   selector
+   * );
+   * ```
+   *
+   * @param pageFunction - the function to evaluate in the frame context.
+   * @param options - options to configure the polling method and timeout.
+   * @param args - arguments to pass to the `pageFunction`.
+   * @returns the promise which resolve when the `pageFunction` returns a truthy value.
+   */
+  waitForFunction<
+    Params extends unknown[],
+    Func extends EvaluateFunc<Params> = EvaluateFunc<Params>
+  >(
+    pageFunction: Func | string,
+    options: FrameWaitForFunctionOptions = {},
+    ...args: Params
+  ): Promise<HandleFor<Awaited<ReturnType<Func>>>> {
+    // TODO: Fix when NodeHandle has been added.
+    return this.worlds[MAIN_WORLD].waitForFunction(
+      pageFunction,
+      options,
+      ...args
+    ) as Promise<HandleFor<Awaited<ReturnType<Func>>>>;
+  }
+
+  /**
+   * @returns The full HTML contents of the frame, including the DOCTYPE.
+   */
+  async content(): Promise<string> {
+    return this.worlds[PUPPETEER_WORLD].content();
+  }
+
+  /**
+   * Set the content of the frame.
+   *
+   * @param html - HTML markup to assign to the page.
+   * @param options - Options to configure how long before timing out and at
+   * what point to consider the content setting successful.
+   */
+  async setContent(
+    html: string,
+    options: {
+      timeout?: number;
+      waitUntil?: PuppeteerLifeCycleEvent | PuppeteerLifeCycleEvent[];
+    } = {}
+  ): Promise<void> {
+    return this.worlds[PUPPETEER_WORLD].setContent(html, options);
+  }
+
+  /**
+   * @returns The frame's `name` attribute as specified in the tag.
+   *
+   * @remarks
+   * If the name is empty, it returns the `id` attribute instead.
+   *
+   * @remarks
+   * This value is calculated once when the frame is created, and will not
+   * update if the attribute is changed later.
+   */
+  name(): string {
+    return this._name || '';
+  }
+
+  /**
+   * @returns The frame's URL.
+   */
+  url(): string {
+    return this.#url;
+  }
+
+  /**
+   * @returns The parent frame, if any. Detached and main frames return `null`.
+   */
+  parentFrame(): Frame | null {
+    return this.#parentFrame;
+  }
+
+  /**
+   * @returns An array of child frames.
+   */
+  childFrames(): Frame[] {
+    return Array.from(this._childFrames);
+  }
+
+  /**
+   * @returns `true` if the frame has been detached. Otherwise, `false`.
+   */
+  isDetached(): boolean {
+    return this.#detached;
+  }
+
+  /**
+   * Adds a `<script>` tag into the page with the desired url or content.
+   *
+   * @param options - Options for the script.
+   * @returns An {@link ElementHandle | element handle} to the injected
+   * `<script>` element.
+   */
+  async addScriptTag(
+    options: FrameAddScriptTagOptions
+  ): Promise<ElementHandle<HTMLScriptElement>> {
+    let {content = '', type} = options;
+    const {path} = options;
+    if (+!!options.url + +!!path + +!!content !== 1) {
+      throw new Error(
+        'Exactly one of `url`, `path`, or `content` must be specified.'
+      );
+    }
+
+    if (path) {
+      let fs;
+      try {
+        fs = (await import('fs')).promises;
+      } catch (error) {
+        if (error instanceof TypeError) {
+          throw new Error(
+            'Can only pass a file path in a Node-like environment.'
+          );
+        }
+        throw error;
+      }
+      content = await fs.readFile(path, 'utf8');
+      content += `//# sourceURL=${path.replace(/\n/g, '')}`;
+    }
+
+    type = type ?? 'text/javascript';
+
+    return this.worlds[MAIN_WORLD].transferHandle(
+      await this.worlds[PUPPETEER_WORLD].evaluateHandle(
+        async ({url, id, type, content}) => {
+          const promise = InjectedUtil.createDeferredPromise<void>();
+          const script = document.createElement('script');
+          script.type = type;
+          script.text = content;
+          if (url) {
+            script.src = url;
+            script.addEventListener(
+              'load',
+              () => {
+                return promise.resolve();
+              },
+              {once: true}
+            );
+            script.addEventListener(
+              'error',
+              event => {
+                promise.reject(
+                  new Error(event.message ?? 'Could not load script')
+                );
+              },
+              {once: true}
+            );
+          } else {
+            promise.resolve();
+          }
+          if (id) {
+            script.id = id;
+          }
+          document.head.appendChild(script);
+          await promise;
+          return script;
+        },
+        {...options, type, content}
+      )
+    );
+  }
+
+  /**
+   * Adds a `<link rel="stylesheet">` tag into the page with the desired URL or
+   * a `<style type="text/css">` tag with the content.
+   *
+   * @returns An {@link ElementHandle | element handle} to the loaded `<link>`
+   * or `<style>` element.
+   */
+  async addStyleTag(
+    options: Omit<FrameAddStyleTagOptions, 'url'>
+  ): Promise<ElementHandle<HTMLStyleElement>>;
+  async addStyleTag(
+    options: FrameAddStyleTagOptions
+  ): Promise<ElementHandle<HTMLLinkElement>>;
+  async addStyleTag(
+    options: FrameAddStyleTagOptions
+  ): Promise<ElementHandle<HTMLStyleElement | HTMLLinkElement>> {
+    let {content = ''} = options;
+    const {path} = options;
+    if (+!!options.url + +!!path + +!!content !== 1) {
+      throw new Error(
+        'Exactly one of `url`, `path`, or `content` must be specified.'
+      );
+    }
+
+    if (path) {
+      let fs: typeof import('fs').promises;
+      try {
+        fs = (await importFS()).promises;
+      } catch (error) {
+        if (error instanceof TypeError) {
+          throw new Error(
+            'Can only pass a file path in a Node-like environment.'
+          );
+        }
+        throw error;
+      }
+
+      content = await fs.readFile(path, 'utf8');
+      content += '/*# sourceURL=' + path.replace(/\n/g, '') + '*/';
+      options.content = content;
+    }
+
+    return this.worlds[MAIN_WORLD].transferHandle(
+      await this.worlds[PUPPETEER_WORLD].evaluateHandle(
+        async ({url, content}) => {
+          const promise = InjectedUtil.createDeferredPromise<void>();
+          let element: HTMLStyleElement | HTMLLinkElement;
+          if (!url) {
+            element = document.createElement('style');
+            element.appendChild(document.createTextNode(content!));
+          } else {
+            const link = document.createElement('link');
+            link.rel = 'stylesheet';
+            link.href = url;
+            element = link;
+          }
+          element.addEventListener(
+            'load',
+            () => {
+              promise.resolve();
+            },
+            {once: true}
+          );
+          element.addEventListener(
+            'error',
+            event => {
+              promise.reject(
+                new Error(
+                  (event as ErrorEvent).message ?? 'Could not load style'
+                )
+              );
+            },
+            {once: true}
+          );
+          document.head.appendChild(element);
+          await promise;
+          return element;
+        },
+        options
+      )
+    );
+  }
+
+  /**
+   * Clicks the first element found that matches `selector`.
+   *
+   * @remarks
+   * If `click()` triggers a navigation event and there's a separate
+   * `page.waitForNavigation()` promise to be resolved, you may end up with a
+   * race condition that yields unexpected results. The correct pattern for
+   * click and wait for navigation is the following:
+   *
+   * ```ts
+   * const [response] = await Promise.all([
+   *   page.waitForNavigation(waitOptions),
+   *   frame.click(selector, clickOptions),
+   * ]);
+   * ```
+   *
+   * @param selector - The selector to query for.
+   */
+  async click(
+    selector: string,
+    options: {
+      delay?: number;
+      button?: MouseButton;
+      clickCount?: number;
+    } = {}
+  ): Promise<void> {
+    return this.worlds[PUPPETEER_WORLD].click(selector, options);
+  }
+
+  /**
+   * Focuses the first element that matches the `selector`.
+   *
+   * @param selector - The selector to query for.
+   * @throws Throws if there's no element matching `selector`.
+   */
+  async focus(selector: string): Promise<void> {
+    return this.worlds[PUPPETEER_WORLD].focus(selector);
+  }
+
+  /**
+   * Hovers the pointer over the center of the first element that matches the
+   * `selector`.
+   *
+   * @param selector - The selector to query for.
+   * @throws Throws if there's no element matching `selector`.
+   */
+  async hover(selector: string): Promise<void> {
+    return this.worlds[PUPPETEER_WORLD].hover(selector);
+  }
+
+  /**
+   * Selects a set of value on the first `<select>` element that matches the
+   * `selector`.
+   *
+   * @example
+   *
+   * ```ts
+   * frame.select('select#colors', 'blue'); // single selection
+   * frame.select('select#colors', 'red', 'green', 'blue'); // multiple selections
+   * ```
+   *
+   * @param selector - The selector to query for.
+   * @param values - The array of values to select. If the `<select>` has the
+   * `multiple` attribute, all values are considered, otherwise only the first
+   * one is taken into account.
+   * @returns the list of values that were successfully selected.
+   * @throws Throws if there's no `<select>` matching `selector`.
+   */
+  select(selector: string, ...values: string[]): Promise<string[]> {
+    return this.worlds[PUPPETEER_WORLD].select(selector, ...values);
+  }
+
+  /**
+   * Taps the first element that matches the `selector`.
+   *
+   * @param selector - The selector to query for.
+   * @throws Throws if there's no element matching `selector`.
+   */
+  async tap(selector: string): Promise<void> {
+    return this.worlds[PUPPETEER_WORLD].tap(selector);
+  }
+
+  /**
+   * Sends a `keydown`, `keypress`/`input`, and `keyup` event for each character
+   * in the text.
+   *
+   * @remarks
+   * To press a special key, like `Control` or `ArrowDown`, use
+   * {@link Keyboard.press}.
+   *
+   * @example
+   *
+   * ```ts
+   * await frame.type('#mytextarea', 'Hello'); // Types instantly
+   * await frame.type('#mytextarea', 'World', {delay: 100}); // Types slower, like a user
+   * ```
+   *
+   * @param selector - the selector for the element to type into. If there are
+   * multiple the first will be used.
+   * @param text - text to type into the element
+   * @param options - takes one option, `delay`, which sets the time to wait
+   * between key presses in milliseconds. Defaults to `0`.
+   */
+  async type(
+    selector: string,
+    text: string,
+    options?: {delay: number}
+  ): Promise<void> {
+    return this.worlds[PUPPETEER_WORLD].type(selector, text, options);
+  }
+
+  /**
+   * @deprecated Use `new Promise(r => setTimeout(r, milliseconds));`.
+   *
+   * Causes your script to wait for the given number of milliseconds.
+   *
+   * @remarks
+   * It's generally recommended to not wait for a number of seconds, but instead
+   * use {@link Frame.waitForSelector}, {@link Frame.waitForXPath} or
+   * {@link Frame.waitForFunction} to wait for exactly the conditions you want.
+   *
+   * @example
+   *
+   * Wait for 1 second:
+   *
+   * ```ts
+   * await frame.waitForTimeout(1000);
+   * ```
+   *
+   * @param milliseconds - the number of milliseconds to wait.
+   */
+  waitForTimeout(milliseconds: number): Promise<void> {
+    return new Promise(resolve => {
+      setTimeout(resolve, milliseconds);
+    });
+  }
+
+  /**
+   * @returns the frame's title.
+   */
+  async title(): Promise<string> {
+    return this.worlds[PUPPETEER_WORLD].title();
+  }
+
+  /**
+   * @internal
+   */
+  _navigated(framePayload: Protocol.Page.Frame): void {
+    this._name = framePayload.name;
+    this.#url = `${framePayload.url}${framePayload.urlFragment || ''}`;
+  }
+
+  /**
+   * @internal
+   */
+  _navigatedWithinDocument(url: string): void {
+    this.#url = url;
+  }
+
+  /**
+   * @internal
+   */
+  _onLifecycleEvent(loaderId: string, name: string): void {
+    if (name === 'init') {
+      this._loaderId = loaderId;
+      this._lifecycleEvents.clear();
+    }
+    this._lifecycleEvents.add(name);
+  }
+
+  /**
+   * @internal
+   */
+  _onLoadingStopped(): void {
+    this._lifecycleEvents.add('DOMContentLoaded');
+    this._lifecycleEvents.add('load');
+  }
+
+  /**
+   * @internal
+   */
+  _onLoadingStarted(): void {
+    this._hasStartedLoading = true;
+  }
+
+  /**
+   * @internal
+   */
+  _detach(): void {
+    this.#detached = true;
+    this.worlds[MAIN_WORLD]._detach();
+    this.worlds[PUPPETEER_WORLD]._detach();
+    if (this.#parentFrame) {
+      this.#parentFrame._childFrames.delete(this);
+    }
+    this.#parentFrame = null;
+  }
+}
diff --git a/remote/test/puppeteer/src/common/FrameManager.ts b/remote/test/puppeteer/src/common/FrameManager.ts
new file mode 100644
index 0000000000..8ab336bc26
--- /dev/null
+++ b/remote/test/puppeteer/src/common/FrameManager.ts
@@ -0,0 +1,519 @@
+/**
+ * Copyright 2017 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import {Protocol} from 'devtools-protocol';
+import {assert} from '../util/assert.js';
+import {createDebuggableDeferredPromise} from '../util/DebuggableDeferredPromise.js';
+import {DeferredPromise} from '../util/DeferredPromise.js';
+import {isErrorLike} from '../util/ErrorLike.js';
+import {CDPSession} from './Connection.js';
+import {EventEmitter} from './EventEmitter.js';
+import {EVALUATION_SCRIPT_URL, ExecutionContext} from './ExecutionContext.js';
+import {Frame} from './Frame.js';
+import {IsolatedWorld, MAIN_WORLD, PUPPETEER_WORLD} from './IsolatedWorld.js';
+import {NetworkManager} from './NetworkManager.js';
+import {Page} from './Page.js';
+import {Target} from './Target.js';
+import {TimeoutSettings} from './TimeoutSettings.js';
+import {debugError} from './util.js';
+
+const UTILITY_WORLD_NAME = '__puppeteer_utility_world__';
+
+/**
+ * We use symbols to prevent external parties listening to these events.
+ * They are internal to Puppeteer.
+ *
+ * @internal
+ */
+export const FrameManagerEmittedEvents = {
+  FrameAttached: Symbol('FrameManager.FrameAttached'),
+  FrameNavigated: Symbol('FrameManager.FrameNavigated'),
+  FrameDetached: Symbol('FrameManager.FrameDetached'),
+  FrameSwapped: Symbol('FrameManager.FrameSwapped'),
+  LifecycleEvent: Symbol('FrameManager.LifecycleEvent'),
+  FrameNavigatedWithinDocument: Symbol(
+    'FrameManager.FrameNavigatedWithinDocument'
+  ),
+  ExecutionContextCreated: Symbol('FrameManager.ExecutionContextCreated'),
+  ExecutionContextDestroyed: Symbol('FrameManager.ExecutionContextDestroyed'),
+};
+
+/**
+ * A frame manager manages the frames for a given {@link Page | page}.
+ *
+ * @internal
+ */
+export class FrameManager extends EventEmitter {
+  #page: Page;
+  #networkManager: NetworkManager;
+  #timeoutSettings: TimeoutSettings;
+  #frames = new Map<string, Frame>();
+  #contextIdToContext = new Map<string, ExecutionContext>();
+  #isolatedWorlds = new Set<string>();
+  #mainFrame?: Frame;
+  #client: CDPSession;
+  /**
+   * Keeps track of OOPIF targets/frames (target ID == frame ID for OOPIFs)
+   * that are being initialized.
+   */
+  #framesPendingTargetInit = new Map<string, DeferredPromise<void>>();
+  /**
+   * Keeps track of frames that are in the process of being attached in #onFrameAttached.
+   */
+  #framesPendingAttachment = new Map<string, DeferredPromise<void>>();
+
+  get timeoutSettings(): TimeoutSettings {
+    return this.#timeoutSettings;
+  }
+
+  get networkManager(): NetworkManager {
+    return this.#networkManager;
+  }
+
+  get client(): CDPSession {
+    return this.#client;
+  }
+
+  constructor(
+    client: CDPSession,
+    page: Page,
+    ignoreHTTPSErrors: boolean,
+    timeoutSettings: TimeoutSettings
+  ) {
+    super();
+    this.#client = client;
+    this.#page = page;
+    this.#networkManager = new NetworkManager(client, ignoreHTTPSErrors, this);
+    this.#timeoutSettings = timeoutSettings;
+    this.setupEventListeners(this.#client);
+  }
+
+  private setupEventListeners(session: CDPSession) {
+    session.on('Page.frameAttached', event => {
+      this.#onFrameAttached(session, event.frameId, event.parentFrameId);
+    });
+    session.on('Page.frameNavigated', event => {
+      this.#onFrameNavigated(event.frame);
+    });
+    session.on('Page.navigatedWithinDocument', event => {
+      this.#onFrameNavigatedWithinDocument(event.frameId, event.url);
+    });
+    session.on(
+      'Page.frameDetached',
+      (event: Protocol.Page.FrameDetachedEvent) => {
+        this.#onFrameDetached(
+          event.frameId,
+          event.reason as Protocol.Page.FrameDetachedEventReason
+        );
+      }
+    );
+    session.on('Page.frameStartedLoading', event => {
+      this.#onFrameStartedLoading(event.frameId);
+    });
+    session.on('Page.frameStoppedLoading', event => {
+      this.#onFrameStoppedLoading(event.frameId);
+    });
+    session.on('Runtime.executionContextCreated', event => {
+      this.#onExecutionContextCreated(event.context, session);
+    });
+    session.on('Runtime.executionContextDestroyed', event => {
+      this.#onExecutionContextDestroyed(event.executionContextId, session);
+    });
+    session.on('Runtime.executionContextsCleared', () => {
+      this.#onExecutionContextsCleared(session);
+    });
+    session.on('Page.lifecycleEvent', event => {
+      this.#onLifecycleEvent(event);
+    });
+  }
+
+  async initialize(
+    targetId: string,
+    client: CDPSession = this.#client
+  ): Promise<void> {
+    try {
+      if (!this.#framesPendingTargetInit.has(targetId)) {
+        this.#framesPendingTargetInit.set(
+          targetId,
+          createDebuggableDeferredPromise(
+            `Waiting for target frame ${targetId} failed`
+          )
+        );
+      }
+      const result = await Promise.all([
+        client.send('Page.enable'),
+        client.send('Page.getFrameTree'),
+      ]);
+
+      const {frameTree} = result[1];
+      this.#handleFrameTree(client, frameTree);
+      await Promise.all([
+        client.send('Page.setLifecycleEventsEnabled', {enabled: true}),
+        client.send('Runtime.enable').then(() => {
+          return this.#createIsolatedWorld(client, UTILITY_WORLD_NAME);
+        }),
+        // TODO: Network manager is not aware of OOP iframes yet.
+        client === this.#client
+          ? this.#networkManager.initialize()
+          : Promise.resolve(),
+      ]);
+    } catch (error) {
+      // The target might have been closed before the initialization finished.
+      if (
+        isErrorLike(error) &&
+        (error.message.includes('Target closed') ||
+          error.message.includes('Session closed'))
+      ) {
+        return;
+      }
+
+      throw error;
+    } finally {
+      this.#framesPendingTargetInit.get(targetId)?.resolve();
+      this.#framesPendingTargetInit.delete(targetId);
+    }
+  }
+
+  executionContextById(
+    contextId: number,
+    session: CDPSession = this.#client
+  ): ExecutionContext {
+    const key = `${session.id()}:${contextId}`;
+    const context = this.#contextIdToContext.get(key);
+    assert(context, 'INTERNAL ERROR: missing context with id = ' + contextId);
+    return context;
+  }
+
+  page(): Page {
+    return this.#page;
+  }
+
+  mainFrame(): Frame {
+    assert(this.#mainFrame, 'Requesting main frame too early!');
+    return this.#mainFrame;
+  }
+
+  frames(): Frame[] {
+    return Array.from(this.#frames.values());
+  }
+
+  frame(frameId: string): Frame | null {
+    return this.#frames.get(frameId) || null;
+  }
+
+  onAttachedToTarget(target: Target): void {
+    if (target._getTargetInfo().type !== 'iframe') {
+      return;
+    }
+
+    const frame = this.#frames.get(target._getTargetInfo().targetId);
+    if (frame) {
+      frame.updateClient(target._session()!);
+    }
+    this.setupEventListeners(target._session()!);
+    this.initialize(target._getTargetInfo().targetId, target._session());
+  }
+
+  onDetachedFromTarget(target: Target): void {
+    const frame = this.#frames.get(target._targetId);
+    if (frame && frame.isOOPFrame()) {
+      // When an OOP iframe is removed from the page, it
+      // will only get a Target.detachedFromTarget event.
+      this.#removeFramesRecursively(frame);
+    }
+  }
+
+  #onLifecycleEvent(event: Protocol.Page.LifecycleEventEvent): void {
+    const frame = this.#frames.get(event.frameId);
+    if (!frame) {
+      return;
+    }
+    frame._onLifecycleEvent(event.loaderId, event.name);
+    this.emit(FrameManagerEmittedEvents.LifecycleEvent, frame);
+  }
+
+  #onFrameStartedLoading(frameId: string): void {
+    const frame = this.#frames.get(frameId);
+    if (!frame) {
+      return;
+    }
+    frame._onLoadingStarted();
+  }
+
+  #onFrameStoppedLoading(frameId: string): void {
+    const frame = this.#frames.get(frameId);
+    if (!frame) {
+      return;
+    }
+    frame._onLoadingStopped();
+    this.emit(FrameManagerEmittedEvents.LifecycleEvent, frame);
+  }
+
+  #handleFrameTree(
+    session: CDPSession,
+    frameTree: Protocol.Page.FrameTree
+  ): void {
+    if (frameTree.frame.parentId) {
+      this.#onFrameAttached(
+        session,
+        frameTree.frame.id,
+        frameTree.frame.parentId
+      );
+    }
+    this.#onFrameNavigated(frameTree.frame);
+    if (!frameTree.childFrames) {
+      return;
+    }
+
+    for (const child of frameTree.childFrames) {
+      this.#handleFrameTree(session, child);
+    }
+  }
+
+  #onFrameAttached(
+    session: CDPSession,
+    frameId: string,
+    parentFrameId: string
+  ): void {
+    if (this.#frames.has(frameId)) {
+      const frame = this.#frames.get(frameId)!;
+      if (session && frame.isOOPFrame()) {
+        // If an OOP iframes becomes a normal iframe again
+        // it is first attached to the parent page before
+        // the target is removed.
+        frame.updateClient(session);
+      }
+      return;
+    }
+    const parentFrame = this.#frames.get(parentFrameId);
+
+    const complete = (parentFrame: Frame) => {
+      assert(parentFrame, `Parent frame ${parentFrameId} not found`);
+      const frame = new Frame(this, parentFrame, frameId, session);
+      this.#frames.set(frame._id, frame);
+      this.emit(FrameManagerEmittedEvents.FrameAttached, frame);
+    };
+
+    if (parentFrame) {
+      return complete(parentFrame);
+    }
+
+    const frame = this.#framesPendingTargetInit.get(parentFrameId);
+    if (frame) {
+      if (!this.#framesPendingAttachment.has(frameId)) {
+        this.#framesPendingAttachment.set(
+          frameId,
+          createDebuggableDeferredPromise(
+            `Waiting for frame ${frameId} to attach failed`
+          )
+        );
+      }
+      frame.then(() => {
+        complete(this.#frames.get(parentFrameId)!);
+        this.#framesPendingAttachment.get(frameId)?.resolve();
+        this.#framesPendingAttachment.delete(frameId);
+      });
+      return;
+    }
+
+    throw new Error(`Parent frame ${parentFrameId} not found`);
+  }
+
+  #onFrameNavigated(framePayload: Protocol.Page.Frame): void {
+    const frameId = framePayload.id;
+    const isMainFrame = !framePayload.parentId;
+    const frame = isMainFrame ? this.#mainFrame : this.#frames.get(frameId);
+
+    const complete = (frame?: Frame) => {
+      assert(
+        isMainFrame || frame,
+        `Missing frame isMainFrame=${isMainFrame}, frameId=${frameId}`
+      );
+
+      // Detach all child frames first.
+      if (frame) {
+        for (const child of frame.childFrames()) {
+          this.#removeFramesRecursively(child);
+        }
+      }
+
+      // Update or create main frame.
+      if (isMainFrame) {
+        if (frame) {
+          // Update frame id to retain frame identity on cross-process navigation.
+          this.#frames.delete(frame._id);
+          frame._id = frameId;
+        } else {
+          // Initial main frame navigation.
+          frame = new Frame(this, null, frameId, this.#client);
+        }
+        this.#frames.set(frameId, frame);
+        this.#mainFrame = frame;
+      }
+
+      // Update frame payload.
+      assert(frame);
+      frame._navigated(framePayload);
+
+      this.emit(FrameManagerEmittedEvents.FrameNavigated, frame);
+    };
+    const pendingFrame = this.#framesPendingAttachment.get(frameId);
+    if (pendingFrame) {
+      pendingFrame.then(() => {
+        complete(isMainFrame ? this.#mainFrame : this.#frames.get(frameId));
+      });
+    } else {
+      complete(frame);
+    }
+  }
+
+  async #createIsolatedWorld(session: CDPSession, name: string): Promise<void> {
+    const key = `${session.id()}:${name}`;
+
+    if (this.#isolatedWorlds.has(key)) {
+      return;
+    }
+
+    await session.send('Page.addScriptToEvaluateOnNewDocument', {
+      source: `//# sourceURL=${EVALUATION_SCRIPT_URL}`,
+      worldName: name,
+    });
+
+    await Promise.all(
+      this.frames()
+        .filter(frame => {
+          return frame._client() === session;
+        })
+        .map(frame => {
+          // Frames might be removed before we send this, so we don't want to
+          // throw an error.
+          return session
+            .send('Page.createIsolatedWorld', {
+              frameId: frame._id,
+              worldName: name,
+              grantUniveralAccess: true,
+            })
+            .catch(debugError);
+        })
+    );
+
+    this.#isolatedWorlds.add(key);
+  }
+
+  #onFrameNavigatedWithinDocument(frameId: string, url: string): void {
+    const frame = this.#frames.get(frameId);
+    if (!frame) {
+      return;
+    }
+    frame._navigatedWithinDocument(url);
+    this.emit(FrameManagerEmittedEvents.FrameNavigatedWithinDocument, frame);
+    this.emit(FrameManagerEmittedEvents.FrameNavigated, frame);
+  }
+
+  #onFrameDetached(
+    frameId: string,
+    reason: Protocol.Page.FrameDetachedEventReason
+  ): void {
+    const frame = this.#frames.get(frameId);
+    if (reason === 'remove') {
+      // Only remove the frame if the reason for the detached event is
+      // an actual removement of the frame.
+      // For frames that become OOP iframes, the reason would be 'swap'.
+      if (frame) {
+        this.#removeFramesRecursively(frame);
+      }
+    } else if (reason === 'swap') {
+      this.emit(FrameManagerEmittedEvents.FrameSwapped, frame);
+    }
+  }
+
+  #onExecutionContextCreated(
+    contextPayload: Protocol.Runtime.ExecutionContextDescription,
+    session: CDPSession
+  ): void {
+    const auxData = contextPayload.auxData as {frameId?: string} | undefined;
+    const frameId = auxData && auxData.frameId;
+    const frame =
+      typeof frameId === 'string' ? this.#frames.get(frameId) : undefined;
+    let world: IsolatedWorld | undefined;
+    if (frame) {
+      // Only care about execution contexts created for the current session.
+      if (frame._client() !== session) {
+        return;
+      }
+
+      if (contextPayload.auxData && !!contextPayload.auxData['isDefault']) {
+        world = frame.worlds[MAIN_WORLD];
+      } else if (
+        contextPayload.name === UTILITY_WORLD_NAME &&
+        !frame.worlds[PUPPETEER_WORLD].hasContext()
+      ) {
+        // In case of multiple sessions to the same target, there's a race between
+        // connections so we might end up creating multiple isolated worlds.
+        // We can use either.
+        world = frame.worlds[PUPPETEER_WORLD];
+      }
+    }
+    const context = new ExecutionContext(
+      frame?._client() || this.#client,
+      contextPayload,
+      world
+    );
+    if (world) {
+      world.setContext(context);
+    }
+    const key = `${session.id()}:${contextPayload.id}`;
+    this.#contextIdToContext.set(key, context);
+  }
+
+  #onExecutionContextDestroyed(
+    executionContextId: number,
+    session: CDPSession
+  ): void {
+    const key = `${session.id()}:${executionContextId}`;
+    const context = this.#contextIdToContext.get(key);
+    if (!context) {
+      return;
+    }
+    this.#contextIdToContext.delete(key);
+    if (context._world) {
+      context._world.clearContext();
+    }
+  }
+
+  #onExecutionContextsCleared(session: CDPSession): void {
+    for (const [key, context] of this.#contextIdToContext.entries()) {
+      // Make sure to only clear execution contexts that belong
+      // to the current session.
+      if (context._client !== session) {
+        continue;
+      }
+      if (context._world) {
+        context._world.clearContext();
+      }
+      this.#contextIdToContext.delete(key);
+    }
+  }
+
+  #removeFramesRecursively(frame: Frame): void {
+    for (const child of frame.childFrames()) {
+      this.#removeFramesRecursively(child);
+    }
+    frame._detach();
+    this.#frames.delete(frame._id);
+    this.emit(FrameManagerEmittedEvents.FrameDetached, frame);
+  }
+}
diff --git a/remote/test/puppeteer/src/common/HTTPRequest.ts b/remote/test/puppeteer/src/common/HTTPRequest.ts
new file mode 100644
index 0000000000..b35c80890b
--- /dev/null
+++ b/remote/test/puppeteer/src/common/HTTPRequest.ts
@@ -0,0 +1,839 @@
+/**
+ * Copyright 2020 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import {Protocol} from 'devtools-protocol';
+import {ProtocolMapping} from 'devtools-protocol/types/protocol-mapping.js';
+import {assert} from '../util/assert.js';
+import {ProtocolError} from './Errors.js';
+import {EventEmitter} from './EventEmitter.js';
+import {Frame} from './Frame.js';
+import {debugError, isString} from './util.js';
+import {HTTPResponse} from './HTTPResponse.js';
+
+/**
+ * @public
+ */
+export interface ContinueRequestOverrides {
+  /**
+   * If set, the request URL will change. This is not a redirect.
+   */
+  url?: string;
+  method?: string;
+  postData?: string;
+  headers?: Record<string, string>;
+}
+
+/**
+ * @public
+ */
+export interface InterceptResolutionState {
+  action: InterceptResolutionAction;
+  priority?: number;
+}
+
+/**
+ * Required response data to fulfill a request with.
+ *
+ * @public
+ */
+export interface ResponseForRequest {
+  status: number;
+  /**
+   * Optional response headers. All values are converted to strings.
+   */
+  headers: Record<string, unknown>;
+  contentType: string;
+  body: string | Buffer;
+}
+
+/**
+ * Resource types for HTTPRequests as perceived by the rendering engine.
+ *
+ * @public
+ */
+export type ResourceType = Lowercase<Protocol.Network.ResourceType>;
+
+/**
+ * The default cooperative request interception resolution priority
+ *
+ * @public
+ */
+export const DEFAULT_INTERCEPT_RESOLUTION_PRIORITY = 0;
+
+interface CDPSession extends EventEmitter {
+  send<T extends keyof ProtocolMapping.Commands>(
+    method: T,
+    ...paramArgs: ProtocolMapping.Commands[T]['paramsType']
+  ): Promise<ProtocolMapping.Commands[T]['returnType']>;
+}
+
+/**
+ * Represents an HTTP request sent by a page.
+ * @remarks
+ *
+ * Whenever the page sends a request, such as for a network resource, the
+ * following events are emitted by Puppeteer's `page`:
+ *
+ * - `request`: emitted when the request is issued by the page.
+ * - `requestfinished` - emitted when the response body is downloaded and the
+ *   request is complete.
+ *
+ * If request fails at some point, then instead of `requestfinished` event the
+ * `requestfailed` event is emitted.
+ *
+ * All of these events provide an instance of `HTTPRequest` representing the
+ * request that occurred:
+ *
+ * ```
+ * page.on('request', request => ...)
+ * ```
+ *
+ * NOTE: HTTP Error responses, such as 404 or 503, are still successful
+ * responses from HTTP standpoint, so request will complete with
+ * `requestfinished` event.
+ *
+ * If request gets a 'redirect' response, the request is successfully finished
+ * with the `requestfinished` event, and a new request is issued to a
+ * redirected url.
+ *
+ * @public
+ */
+export class HTTPRequest {
+  /**
+   * @internal
+   */
+  _requestId: string;
+  /**
+   * @internal
+   */
+  _interceptionId: string | undefined;
+  /**
+   * @internal
+   */
+  _failureText: string | null = null;
+  /**
+   * @internal
+   */
+  _response: HTTPResponse | null = null;
+  /**
+   * @internal
+   */
+  _fromMemoryCache = false;
+  /**
+   * @internal
+   */
+  _redirectChain: HTTPRequest[];
+
+  #client: CDPSession;
+  #isNavigationRequest: boolean;
+  #allowInterception: boolean;
+  #interceptionHandled = false;
+  #url: string;
+  #resourceType: ResourceType;
+
+  #method: string;
+  #postData?: string;
+  #headers: Record<string, string> = {};
+  #frame: Frame | null;
+  #continueRequestOverrides: ContinueRequestOverrides;
+  #responseForRequest: Partial<ResponseForRequest> | null = null;
+  #abortErrorReason: Protocol.Network.ErrorReason | null = null;
+  #interceptResolutionState: InterceptResolutionState = {
+    action: InterceptResolutionAction.None,
+  };
+  #interceptHandlers: Array<() => void | PromiseLike<any>>;
+  #initiator: Protocol.Network.Initiator;
+
+  /**
+   * Warning! Using this client can break Puppeteer. Use with caution.
+   *
+   * @experimental
+   */
+  get client(): CDPSession {
+    return this.#client;
+  }
+
+  /**
+   * @internal
+   */
+  constructor(
+    client: CDPSession,
+    frame: Frame | null,
+    interceptionId: string | undefined,
+    allowInterception: boolean,
+    event: Protocol.Network.RequestWillBeSentEvent,
+    redirectChain: HTTPRequest[]
+  ) {
+    this.#client = client;
+    this._requestId = event.requestId;
+    this.#isNavigationRequest =
+      event.requestId === event.loaderId && event.type === 'Document';
+    this._interceptionId = interceptionId;
+    this.#allowInterception = allowInterception;
+    this.#url = event.request.url;
+    this.#resourceType = (event.type || 'other').toLowerCase() as ResourceType;
+    this.#method = event.request.method;
+    this.#postData = event.request.postData;
+    this.#frame = frame;
+    this._redirectChain = redirectChain;
+    this.#continueRequestOverrides = {};
+    this.#interceptHandlers = [];
+    this.#initiator = event.initiator;
+
+    for (const [key, value] of Object.entries(event.request.headers)) {
+      this.#headers[key.toLowerCase()] = value;
+    }
+  }
+
+  /**
+   * @returns the URL of the request
+   */
+  url(): string {
+    return this.#url;
+  }
+
+  /**
+   * @returns the `ContinueRequestOverrides` that will be used
+   * if the interception is allowed to continue (ie, `abort()` and
+   * `respond()` aren't called).
+   */
+  continueRequestOverrides(): ContinueRequestOverrides {
+    assert(this.#allowInterception, 'Request Interception is not enabled!');
+    return this.#continueRequestOverrides;
+  }
+
+  /**
+   * @returns The `ResponseForRequest` that gets used if the
+   * interception is allowed to respond (ie, `abort()` is not called).
+   */
+  responseForRequest(): Partial<ResponseForRequest> | null {
+    assert(this.#allowInterception, 'Request Interception is not enabled!');
+    return this.#responseForRequest;
+  }
+
+  /**
+   * @returns the most recent reason for aborting the request
+   */
+  abortErrorReason(): Protocol.Network.ErrorReason | null {
+    assert(this.#allowInterception, 'Request Interception is not enabled!');
+    return this.#abortErrorReason;
+  }
+
+  /**
+   * @returns An InterceptResolutionState object describing the current resolution
+   * action and priority.
+   *
+   * InterceptResolutionState contains:
+   * action: InterceptResolutionAction
+   * priority?: number
+   *
+   * InterceptResolutionAction is one of: `abort`, `respond`, `continue`,
+   * `disabled`, `none`, or `already-handled`.
+   */
+  interceptResolutionState(): InterceptResolutionState {
+    if (!this.#allowInterception) {
+      return {action: InterceptResolutionAction.Disabled};
+    }
+    if (this.#interceptionHandled) {
+      return {action: InterceptResolutionAction.AlreadyHandled};
+    }
+    return {...this.#interceptResolutionState};
+  }
+
+  /**
+   * @returns `true` if the intercept resolution has already been handled,
+   * `false` otherwise.
+   */
+  isInterceptResolutionHandled(): boolean {
+    return this.#interceptionHandled;
+  }
+
+  /**
+   * Adds an async request handler to the processing queue.
+   * Deferred handlers are not guaranteed to execute in any particular order,
+   * but they are guaranteed to resolve before the request interception
+   * is finalized.
+   */
+  enqueueInterceptAction(
+    pendingHandler: () => void | PromiseLike<unknown>
+  ): void {
+    this.#interceptHandlers.push(pendingHandler);
+  }
+
+  /**
+   * Awaits pending interception handlers and then decides how to fulfill
+   * the request interception.
+   */
+  async finalizeInterceptions(): Promise<void> {
+    await this.#interceptHandlers.reduce((promiseChain, interceptAction) => {
+      return promiseChain.then(interceptAction);
+    }, Promise.resolve());
+    const {action} = this.interceptResolutionState();
+    switch (action) {
+      case 'abort':
+        return this.#abort(this.#abortErrorReason);
+      case 'respond':
+        if (this.#responseForRequest === null) {
+          throw new Error('Response is missing for the interception');
+        }
+        return this.#respond(this.#responseForRequest);
+      case 'continue':
+        return this.#continue(this.#continueRequestOverrides);
+    }
+  }
+
+  /**
+   * Contains the request's resource type as it was perceived by the rendering
+   * engine.
+   */
+  resourceType(): ResourceType {
+    return this.#resourceType;
+  }
+
+  /**
+   * @returns the method used (`GET`, `POST`, etc.)
+   */
+  method(): string {
+    return this.#method;
+  }
+
+  /**
+   * @returns the request's post body, if any.
+   */
+  postData(): string | undefined {
+    return this.#postData;
+  }
+
+  /**
+   * @returns an object with HTTP headers associated with the request. All
+   * header names are lower-case.
+   */
+  headers(): Record<string, string> {
+    return this.#headers;
+  }
+
+  /**
+   * @returns A matching `HTTPResponse` object, or null if the response has not
+   * been received yet.
+   */
+  response(): HTTPResponse | null {
+    return this._response;
+  }
+
+  /**
+   * @returns the frame that initiated the request, or null if navigating to
+   * error pages.
+   */
+  frame(): Frame | null {
+    return this.#frame;
+  }
+
+  /**
+   * @returns true if the request is the driver of the current frame's navigation.
+   */
+  isNavigationRequest(): boolean {
+    return this.#isNavigationRequest;
+  }
+
+  /**
+   * @returns the initiator of the request.
+   */
+  initiator(): Protocol.Network.Initiator {
+    return this.#initiator;
+  }
+
+  /**
+   * A `redirectChain` is a chain of requests initiated to fetch a resource.
+   * @remarks
+   *
+   * `redirectChain` is shared between all the requests of the same chain.
+   *
+   * For example, if the website `http://example.com` has a single redirect to
+   * `https://example.com`, then the chain will contain one request:
+   *
+   * ```ts
+   * const response = await page.goto('http://example.com');
+   * const chain = response.request().redirectChain();
+   * console.log(chain.length); // 1
+   * console.log(chain[0].url()); // 'http://example.com'
+   * ```
+   *
+   * If the website `https://google.com` has no redirects, then the chain will be empty:
+   *
+   * ```ts
+   * const response = await page.goto('https://google.com');
+   * const chain = response.request().redirectChain();
+   * console.log(chain.length); // 0
+   * ```
+   *
+   * @returns the chain of requests - if a server responds with at least a
+   * single redirect, this chain will contain all requests that were redirected.
+   */
+  redirectChain(): HTTPRequest[] {
+    return this._redirectChain.slice();
+  }
+
+  /**
+   * Access information about the request's failure.
+   *
+   * @remarks
+   *
+   * @example
+   *
+   * Example of logging all failed requests:
+   *
+   * ```ts
+   * page.on('requestfailed', request => {
+   *   console.log(request.url() + ' ' + request.failure().errorText);
+   * });
+   * ```
+   *
+   * @returns `null` unless the request failed. If the request fails this can
+   * return an object with `errorText` containing a human-readable error
+   * message, e.g. `net::ERR_FAILED`. It is not guaranteed that there will be
+   * failure text if the request fails.
+   */
+  failure(): {errorText: string} | null {
+    if (!this._failureText) {
+      return null;
+    }
+    return {
+      errorText: this._failureText,
+    };
+  }
+
+  /**
+   * Continues request with optional request overrides.
+   *
+   * @remarks
+   *
+   * To use this, request
+   * interception should be enabled with {@link Page.setRequestInterception}.
+   *
+   * Exception is immediately thrown if the request interception is not enabled.
+   *
+   * @example
+   *
+   * ```ts
+   * await page.setRequestInterception(true);
+   * page.on('request', request => {
+   *   // Override headers
+   *   const headers = Object.assign({}, request.headers(), {
+   *     foo: 'bar', // set "foo" header
+   *     origin: undefined, // remove "origin" header
+   *   });
+   *   request.continue({headers});
+   * });
+   * ```
+   *
+   * @param overrides - optional overrides to apply to the request.
+   * @param priority - If provided, intercept is resolved using
+   * cooperative handling rules. Otherwise, intercept is resolved
+   * immediately.
+   */
+  async continue(
+    overrides: ContinueRequestOverrides = {},
+    priority?: number
+  ): Promise<void> {
+    // Request interception is not supported for data: urls.
+    if (this.#url.startsWith('data:')) {
+      return;
+    }
+    assert(this.#allowInterception, 'Request Interception is not enabled!');
+    assert(!this.#interceptionHandled, 'Request is already handled!');
+    if (priority === undefined) {
+      return this.#continue(overrides);
+    }
+    this.#continueRequestOverrides = overrides;
+    if (
+      this.#interceptResolutionState.priority === undefined ||
+      priority > this.#interceptResolutionState.priority
+    ) {
+      this.#interceptResolutionState = {
+        action: InterceptResolutionAction.Continue,
+        priority,
+      };
+      return;
+    }
+    if (priority === this.#interceptResolutionState.priority) {
+      if (
+        this.#interceptResolutionState.action === 'abort' ||
+        this.#interceptResolutionState.action === 'respond'
+      ) {
+        return;
+      }
+      this.#interceptResolutionState.action =
+        InterceptResolutionAction.Continue;
+    }
+    return;
+  }
+
+  async #continue(overrides: ContinueRequestOverrides = {}): Promise<void> {
+    const {url, method, postData, headers} = overrides;
+    this.#interceptionHandled = true;
+
+    const postDataBinaryBase64 = postData
+      ? Buffer.from(postData).toString('base64')
+      : undefined;
+
+    if (this._interceptionId === undefined) {
+      throw new Error(
+        'HTTPRequest is missing _interceptionId needed for Fetch.continueRequest'
+      );
+    }
+    await this.#client
+      .send('Fetch.continueRequest', {
+        requestId: this._interceptionId,
+        url,
+        method,
+        postData: postDataBinaryBase64,
+        headers: headers ? headersArray(headers) : undefined,
+      })
+      .catch(error => {
+        this.#interceptionHandled = false;
+        return handleError(error);
+      });
+  }
+
+  /**
+   * Fulfills a request with the given response.
+   *
+   * @remarks
+   *
+   * To use this, request
+   * interception should be enabled with {@link Page.setRequestInterception}.
+   *
+   * Exception is immediately thrown if the request interception is not enabled.
+   *
+   * @example
+   * An example of fulfilling all requests with 404 responses:
+   *
+   * ```ts
+   * await page.setRequestInterception(true);
+   * page.on('request', request => {
+   *   request.respond({
+   *     status: 404,
+   *     contentType: 'text/plain',
+   *     body: 'Not Found!',
+   *   });
+   * });
+   * ```
+   *
+   * NOTE: Mocking responses for dataURL requests is not supported.
+   * Calling `request.respond` for a dataURL request is a noop.
+   *
+   * @param response - the response to fulfill the request with.
+   * @param priority - If provided, intercept is resolved using
+   * cooperative handling rules. Otherwise, intercept is resolved
+   * immediately.
+   */
+  async respond(
+    response: Partial<ResponseForRequest>,
+    priority?: number
+  ): Promise<void> {
+    // Mocking responses for dataURL requests is not currently supported.
+    if (this.#url.startsWith('data:')) {
+      return;
+    }
+    assert(this.#allowInterception, 'Request Interception is not enabled!');
+    assert(!this.#interceptionHandled, 'Request is already handled!');
+    if (priority === undefined) {
+      return this.#respond(response);
+    }
+    this.#responseForRequest = response;
+    if (
+      this.#interceptResolutionState.priority === undefined ||
+      priority > this.#interceptResolutionState.priority
+    ) {
+      this.#interceptResolutionState = {
+        action: InterceptResolutionAction.Respond,
+        priority,
+      };
+      return;
+    }
+    if (priority === this.#interceptResolutionState.priority) {
+      if (this.#interceptResolutionState.action === 'abort') {
+        return;
+      }
+      this.#interceptResolutionState.action = InterceptResolutionAction.Respond;
+    }
+  }
+
+  async #respond(response: Partial<ResponseForRequest>): Promise<void> {
+    this.#interceptionHandled = true;
+
+    const responseBody: Buffer | null =
+      response.body && isString(response.body)
+        ? Buffer.from(response.body)
+        : (response.body as Buffer) || null;
+
+    const responseHeaders: Record<string, string | string[]> = {};
+    if (response.headers) {
+      for (const header of Object.keys(response.headers)) {
+        const value = response.headers[header];
+
+        responseHeaders[header.toLowerCase()] = Array.isArray(value)
+          ? value.map(item => {
+              return String(item);
+            })
+          : String(value);
+      }
+    }
+    if (response.contentType) {
+      responseHeaders['content-type'] = response.contentType;
+    }
+    if (responseBody && !('content-length' in responseHeaders)) {
+      responseHeaders['content-length'] = String(
+        Buffer.byteLength(responseBody)
+      );
+    }
+
+    const status = response.status || 200;
+    if (this._interceptionId === undefined) {
+      throw new Error(
+        'HTTPRequest is missing _interceptionId needed for Fetch.fulfillRequest'
+      );
+    }
+    await this.#client
+      .send('Fetch.fulfillRequest', {
+        requestId: this._interceptionId,
+        responseCode: status,
+        responsePhrase: STATUS_TEXTS[status],
+        responseHeaders: headersArray(responseHeaders),
+        body: responseBody ? responseBody.toString('base64') : undefined,
+      })
+      .catch(error => {
+        this.#interceptionHandled = false;
+        return handleError(error);
+      });
+  }
+
+  /**
+   * Aborts a request.
+   *
+   * @remarks
+   * To use this, request interception should be enabled with
+   * {@link Page.setRequestInterception}. If it is not enabled, this method will
+   * throw an exception immediately.
+   *
+   * @param errorCode - optional error code to provide.
+   * @param priority - If provided, intercept is resolved using
+   * cooperative handling rules. Otherwise, intercept is resolved
+   * immediately.
+   */
+  async abort(
+    errorCode: ErrorCode = 'failed',
+    priority?: number
+  ): Promise<void> {
+    // Request interception is not supported for data: urls.
+    if (this.#url.startsWith('data:')) {
+      return;
+    }
+    const errorReason = errorReasons[errorCode];
+    assert(errorReason, 'Unknown error code: ' + errorCode);
+    assert(this.#allowInterception, 'Request Interception is not enabled!');
+    assert(!this.#interceptionHandled, 'Request is already handled!');
+    if (priority === undefined) {
+      return this.#abort(errorReason);
+    }
+    this.#abortErrorReason = errorReason;
+    if (
+      this.#interceptResolutionState.priority === undefined ||
+      priority >= this.#interceptResolutionState.priority
+    ) {
+      this.#interceptResolutionState = {
+        action: InterceptResolutionAction.Abort,
+        priority,
+      };
+      return;
+    }
+  }
+
+  async #abort(
+    errorReason: Protocol.Network.ErrorReason | null
+  ): Promise<void> {
+    this.#interceptionHandled = true;
+    if (this._interceptionId === undefined) {
+      throw new Error(
+        'HTTPRequest is missing _interceptionId needed for Fetch.failRequest'
+      );
+    }
+    await this.#client
+      .send('Fetch.failRequest', {
+        requestId: this._interceptionId,
+        errorReason: errorReason || 'Failed',
+      })
+      .catch(handleError);
+  }
+}
+
+/**
+ * @public
+ */
+export enum InterceptResolutionAction {
+  Abort = 'abort',
+  Respond = 'respond',
+  Continue = 'continue',
+  Disabled = 'disabled',
+  None = 'none',
+  AlreadyHandled = 'already-handled',
+}
+
+/**
+ * @public
+ *
+ * @deprecated please use {@link InterceptResolutionAction} instead.
+ */
+export type InterceptResolutionStrategy = InterceptResolutionAction;
+
+/**
+ * @public
+ */
+export type ErrorCode =
+  | 'aborted'
+  | 'accessdenied'
+  | 'addressunreachable'
+  | 'blockedbyclient'
+  | 'blockedbyresponse'
+  | 'connectionaborted'
+  | 'connectionclosed'
+  | 'connectionfailed'
+  | 'connectionrefused'
+  | 'connectionreset'
+  | 'internetdisconnected'
+  | 'namenotresolved'
+  | 'timedout'
+  | 'failed';
+
+const errorReasons: Record<ErrorCode, Protocol.Network.ErrorReason> = {
+  aborted: 'Aborted',
+  accessdenied: 'AccessDenied',
+  addressunreachable: 'AddressUnreachable',
+  blockedbyclient: 'BlockedByClient',
+  blockedbyresponse: 'BlockedByResponse',
+  connectionaborted: 'ConnectionAborted',
+  connectionclosed: 'ConnectionClosed',
+  connectionfailed: 'ConnectionFailed',
+  connectionrefused: 'ConnectionRefused',
+  connectionreset: 'ConnectionReset',
+  internetdisconnected: 'InternetDisconnected',
+  namenotresolved: 'NameNotResolved',
+  timedout: 'TimedOut',
+  failed: 'Failed',
+} as const;
+
+/**
+ * @public
+ */
+export type ActionResult = 'continue' | 'abort' | 'respond';
+
+function headersArray(
+  headers: Record<string, string | string[]>
+): Array<{name: string; value: string}> {
+  const result = [];
+  for (const name in headers) {
+    const value = headers[name];
+
+    if (!Object.is(value, undefined)) {
+      const values = Array.isArray(value) ? value : [value];
+
+      result.push(
+        ...values.map(value => {
+          return {name, value: value + ''};
+        })
+      );
+    }
+  }
+  return result;
+}
+
+async function handleError(error: ProtocolError) {
+  if (['Invalid header'].includes(error.originalMessage)) {
+    throw error;
+  }
+  // In certain cases, protocol will return error if the request was
+  // already canceled or the page was closed. We should tolerate these
+  // errors.
+  debugError(error);
+}
+
+// List taken from
+// https://www.iana.org/assignments/http-status-codes/http-status-codes.xhtml
+// with extra 306 and 418 codes.
+const STATUS_TEXTS: {[key: string]: string | undefined} = {
+  '100': 'Continue',
+  '101': 'Switching Protocols',
+  '102': 'Processing',
+  '103': 'Early Hints',
+  '200': 'OK',
+  '201': 'Created',
+  '202': 'Accepted',
+  '203': 'Non-Authoritative Information',
+  '204': 'No Content',
+  '205': 'Reset Content',
+  '206': 'Partial Content',
+  '207': 'Multi-Status',
+  '208': 'Already Reported',
+  '226': 'IM Used',
+  '300': 'Multiple Choices',
+  '301': 'Moved Permanently',
+  '302': 'Found',
+  '303': 'See Other',
+  '304': 'Not Modified',
+  '305': 'Use Proxy',
+  '306': 'Switch Proxy',
+  '307': 'Temporary Redirect',
+  '308': 'Permanent Redirect',
+  '400': 'Bad Request',
+  '401': 'Unauthorized',
+  '402': 'Payment Required',
+  '403': 'Forbidden',
+  '404': 'Not Found',
+  '405': 'Method Not Allowed',
+  '406': 'Not Acceptable',
+  '407': 'Proxy Authentication Required',
+  '408': 'Request Timeout',
+  '409': 'Conflict',
+  '410': 'Gone',
+  '411': 'Length Required',
+  '412': 'Precondition Failed',
+  '413': 'Payload Too Large',
+  '414': 'URI Too Long',
+  '415': 'Unsupported Media Type',
+  '416': 'Range Not Satisfiable',
+  '417': 'Expectation Failed',
+  '418': "I'm a teapot",
+  '421': 'Misdirected Request',
+  '422': 'Unprocessable Entity',
+  '423': 'Locked',
+  '424': 'Failed Dependency',
+  '425': 'Too Early',
+  '426': 'Upgrade Required',
+  '428': 'Precondition Required',
+  '429': 'Too Many Requests',
+  '431': 'Request Header Fields Too Large',
+  '451': 'Unavailable For Legal Reasons',
+  '500': 'Internal Server Error',
+  '501': 'Not Implemented',
+  '502': 'Bad Gateway',
+  '503': 'Service Unavailable',
+  '504': 'Gateway Timeout',
+  '505': 'HTTP Version Not Supported',
+  '506': 'Variant Also Negotiates',
+  '507': 'Insufficient Storage',
+  '508': 'Loop Detected',
+  '510': 'Not Extended',
+  '511': 'Network Authentication Required',
+} as const;
diff --git a/remote/test/puppeteer/src/common/HTTPResponse.ts b/remote/test/puppeteer/src/common/HTTPResponse.ts
new file mode 100644
index 0000000000..ae3c372908
--- /dev/null
+++ b/remote/test/puppeteer/src/common/HTTPResponse.ts
@@ -0,0 +1,278 @@
+/**
+ * Copyright 2020 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import {ProtocolMapping} from 'devtools-protocol/types/protocol-mapping.js';
+
+import {EventEmitter} from './EventEmitter.js';
+import {Frame} from './Frame.js';
+import {HTTPRequest} from './HTTPRequest.js';
+import {SecurityDetails} from './SecurityDetails.js';
+import {Protocol} from 'devtools-protocol';
+import {ProtocolError} from './Errors.js';
+
+/**
+ * @public
+ */
+export interface RemoteAddress {
+  ip?: string;
+  port?: number;
+}
+
+interface CDPSession extends EventEmitter {
+  send<T extends keyof ProtocolMapping.Commands>(
+    method: T,
+    ...paramArgs: ProtocolMapping.Commands[T]['paramsType']
+  ): Promise<ProtocolMapping.Commands[T]['returnType']>;
+}
+
+/**
+ * The HTTPResponse class represents responses which are received by the
+ * {@link Page} class.
+ *
+ * @public
+ */
+export class HTTPResponse {
+  #client: CDPSession;
+  #request: HTTPRequest;
+  #contentPromise: Promise<Buffer> | null = null;
+  #bodyLoadedPromise: Promise<Error | void>;
+  #bodyLoadedPromiseFulfill: (err: Error | void) => void = () => {};
+  #remoteAddress: RemoteAddress;
+  #status: number;
+  #statusText: string;
+  #url: string;
+  #fromDiskCache: boolean;
+  #fromServiceWorker: boolean;
+  #headers: Record<string, string> = {};
+  #securityDetails: SecurityDetails | null;
+  #timing: Protocol.Network.ResourceTiming | null;
+
+  /**
+   * @internal
+   */
+  constructor(
+    client: CDPSession,
+    request: HTTPRequest,
+    responsePayload: Protocol.Network.Response,
+    extraInfo: Protocol.Network.ResponseReceivedExtraInfoEvent | null
+  ) {
+    this.#client = client;
+    this.#request = request;
+
+    this.#bodyLoadedPromise = new Promise(fulfill => {
+      this.#bodyLoadedPromiseFulfill = fulfill;
+    });
+
+    this.#remoteAddress = {
+      ip: responsePayload.remoteIPAddress,
+      port: responsePayload.remotePort,
+    };
+    this.#statusText =
+      this.#parseStatusTextFromExtrInfo(extraInfo) ||
+      responsePayload.statusText;
+    this.#url = request.url();
+    this.#fromDiskCache = !!responsePayload.fromDiskCache;
+    this.#fromServiceWorker = !!responsePayload.fromServiceWorker;
+
+    this.#status = extraInfo ? extraInfo.statusCode : responsePayload.status;
+    const headers = extraInfo ? extraInfo.headers : responsePayload.headers;
+    for (const [key, value] of Object.entries(headers)) {
+      this.#headers[key.toLowerCase()] = value;
+    }
+
+    this.#securityDetails = responsePayload.securityDetails
+      ? new SecurityDetails(responsePayload.securityDetails)
+      : null;
+    this.#timing = responsePayload.timing || null;
+  }
+
+  #parseStatusTextFromExtrInfo(
+    extraInfo: Protocol.Network.ResponseReceivedExtraInfoEvent | null
+  ): string | undefined {
+    if (!extraInfo || !extraInfo.headersText) {
+      return;
+    }
+    const firstLine = extraInfo.headersText.split('\r', 1)[0];
+    if (!firstLine) {
+      return;
+    }
+    const match = firstLine.match(/[^ ]* [^ ]* (.*)/);
+    if (!match) {
+      return;
+    }
+    const statusText = match[1];
+    if (!statusText) {
+      return;
+    }
+    return statusText;
+  }
+
+  /**
+   * @internal
+   */
+  _resolveBody(err: Error | null): void {
+    if (err) {
+      return this.#bodyLoadedPromiseFulfill(err);
+    }
+    return this.#bodyLoadedPromiseFulfill();
+  }
+
+  /**
+   * @returns The IP address and port number used to connect to the remote
+   * server.
+   */
+  remoteAddress(): RemoteAddress {
+    return this.#remoteAddress;
+  }
+
+  /**
+   * @returns The URL of the response.
+   */
+  url(): string {
+    return this.#url;
+  }
+
+  /**
+   * @returns True if the response was successful (status in the range 200-299).
+   */
+  ok(): boolean {
+    // TODO: document === 0 case?
+    return this.#status === 0 || (this.#status >= 200 && this.#status <= 299);
+  }
+
+  /**
+   * @returns The status code of the response (e.g., 200 for a success).
+   */
+  status(): number {
+    return this.#status;
+  }
+
+  /**
+   * @returns The status text of the response (e.g. usually an "OK" for a
+   * success).
+   */
+  statusText(): string {
+    return this.#statusText;
+  }
+
+  /**
+   * @returns An object with HTTP headers associated with the response. All
+   * header names are lower-case.
+   */
+  headers(): Record<string, string> {
+    return this.#headers;
+  }
+
+  /**
+   * @returns {@link SecurityDetails} if the response was received over the
+   * secure connection, or `null` otherwise.
+   */
+  securityDetails(): SecurityDetails | null {
+    return this.#securityDetails;
+  }
+
+  /**
+   * @returns Timing information related to the response.
+   */
+  timing(): Protocol.Network.ResourceTiming | null {
+    return this.#timing;
+  }
+
+  /**
+   * @returns Promise which resolves to a buffer with response body.
+   */
+  buffer(): Promise<Buffer> {
+    if (!this.#contentPromise) {
+      this.#contentPromise = this.#bodyLoadedPromise.then(async error => {
+        if (error) {
+          throw error;
+        }
+        try {
+          const response = await this.#client.send('Network.getResponseBody', {
+            requestId: this.#request._requestId,
+          });
+          return Buffer.from(
+            response.body,
+            response.base64Encoded ? 'base64' : 'utf8'
+          );
+        } catch (error) {
+          if (
+            error instanceof ProtocolError &&
+            error.originalMessage === 'No resource with given identifier found'
+          ) {
+            throw new ProtocolError(
+              'Could not load body for this request. This might happen if the request is a preflight request.'
+            );
+          }
+
+          throw error;
+        }
+      });
+    }
+    return this.#contentPromise;
+  }
+
+  /**
+   * @returns Promise which resolves to a text representation of response body.
+   */
+  async text(): Promise<string> {
+    const content = await this.buffer();
+    return content.toString('utf8');
+  }
+
+  /**
+   *
+   * @returns Promise which resolves to a JSON representation of response body.
+   *
+   * @remarks
+   *
+   * This method will throw if the response body is not parsable via
+   * `JSON.parse`.
+   */
+  async json(): Promise<any> {
+    const content = await this.text();
+    return JSON.parse(content);
+  }
+
+  /**
+   * @returns A matching {@link HTTPRequest} object.
+   */
+  request(): HTTPRequest {
+    return this.#request;
+  }
+
+  /**
+   * @returns True if the response was served from either the browser's disk
+   * cache or memory cache.
+   */
+  fromCache(): boolean {
+    return this.#fromDiskCache || this.#request._fromMemoryCache;
+  }
+
+  /**
+   * @returns True if the response was served by a service worker.
+   */
+  fromServiceWorker(): boolean {
+    return this.#fromServiceWorker;
+  }
+
+  /**
+   * @returns A {@link Frame} that initiated this response, or `null` if
+   * navigating to error pages.
+   */
+  frame(): Frame | null {
+    return this.#request.frame();
+  }
+}
diff --git a/remote/test/puppeteer/src/common/Input.ts b/remote/test/puppeteer/src/common/Input.ts
new file mode 100644
index 0000000000..8234f49355
--- /dev/null
+++ b/remote/test/puppeteer/src/common/Input.ts
@@ -0,0 +1,677 @@
+/**
+ * Copyright 2017 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the 'License');
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an 'AS IS' BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import {assert} from '../util/assert.js';
+import {CDPSession} from './Connection.js';
+import {_keyDefinitions, KeyDefinition, KeyInput} from './USKeyboardLayout.js';
+import {Protocol} from 'devtools-protocol';
+import {Point} from './JSHandle.js';
+
+type KeyDescription = Required<
+  Pick<KeyDefinition, 'keyCode' | 'key' | 'text' | 'code' | 'location'>
+>;
+
+/**
+ * Keyboard provides an api for managing a virtual keyboard.
+ * The high level api is {@link Keyboard."type"},
+ * which takes raw characters and generates proper keydown, keypress/input,
+ * and keyup events on your page.
+ *
+ * @remarks
+ * For finer control, you can use {@link Keyboard.down},
+ * {@link Keyboard.up}, and {@link Keyboard.sendCharacter}
+ * to manually fire events as if they were generated from a real keyboard.
+ *
+ * On MacOS, keyboard shortcuts like `⌘ A` -\> Select All do not work.
+ * See {@link https://github.com/puppeteer/puppeteer/issues/1313 | #1313}.
+ *
+ * @example
+ * An example of holding down `Shift` in order to select and delete some text:
+ *
+ * ```ts
+ * await page.keyboard.type('Hello World!');
+ * await page.keyboard.press('ArrowLeft');
+ *
+ * await page.keyboard.down('Shift');
+ * for (let i = 0; i < ' World'.length; i++)
+ *   await page.keyboard.press('ArrowLeft');
+ * await page.keyboard.up('Shift');
+ *
+ * await page.keyboard.press('Backspace');
+ * // Result text will end up saying 'Hello!'
+ * ```
+ *
+ * @example
+ * An example of pressing `A`
+ *
+ * ```ts
+ * await page.keyboard.down('Shift');
+ * await page.keyboard.press('KeyA');
+ * await page.keyboard.up('Shift');
+ * ```
+ *
+ * @public
+ */
+export class Keyboard {
+  #client: CDPSession;
+  #pressedKeys = new Set<string>();
+
+  /**
+   * @internal
+   */
+  _modifiers = 0;
+
+  /**
+   * @internal
+   */
+  constructor(client: CDPSession) {
+    this.#client = client;
+  }
+
+  /**
+   * Dispatches a `keydown` event.
+   *
+   * @remarks
+   * If `key` is a single character and no modifier keys besides `Shift`
+   * are being held down, a `keypress`/`input` event will also generated.
+   * The `text` option can be specified to force an input event to be generated.
+   * If `key` is a modifier key, `Shift`, `Meta`, `Control`, or `Alt`,
+   * subsequent key presses will be sent with that modifier active.
+   * To release the modifier key, use {@link Keyboard.up}.
+   *
+   * After the key is pressed once, subsequent calls to
+   * {@link Keyboard.down} will have
+   * {@link https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent/repeat | repeat}
+   * set to true. To release the key, use {@link Keyboard.up}.
+   *
+   * Modifier keys DO influence {@link Keyboard.down}.
+   * Holding down `Shift` will type the text in upper case.
+   *
+   * @param key - Name of key to press, such as `ArrowLeft`.
+   * See {@link KeyInput} for a list of all key names.
+   *
+   * @param options - An object of options. Accepts text which, if specified,
+   * generates an input event with this text.
+   */
+  async down(
+    key: KeyInput,
+    options: {text?: string} = {text: undefined}
+  ): Promise<void> {
+    const description = this.#keyDescriptionForString(key);
+
+    const autoRepeat = this.#pressedKeys.has(description.code);
+    this.#pressedKeys.add(description.code);
+    this._modifiers |= this.#modifierBit(description.key);
+
+    const text = options.text === undefined ? description.text : options.text;
+    await this.#client.send('Input.dispatchKeyEvent', {
+      type: text ? 'keyDown' : 'rawKeyDown',
+      modifiers: this._modifiers,
+      windowsVirtualKeyCode: description.keyCode,
+      code: description.code,
+      key: description.key,
+      text: text,
+      unmodifiedText: text,
+      autoRepeat,
+      location: description.location,
+      isKeypad: description.location === 3,
+    });
+  }
+
+  #modifierBit(key: string): number {
+    if (key === 'Alt') {
+      return 1;
+    }
+    if (key === 'Control') {
+      return 2;
+    }
+    if (key === 'Meta') {
+      return 4;
+    }
+    if (key === 'Shift') {
+      return 8;
+    }
+    return 0;
+  }
+
+  #keyDescriptionForString(keyString: KeyInput): KeyDescription {
+    const shift = this._modifiers & 8;
+    const description = {
+      key: '',
+      keyCode: 0,
+      code: '',
+      text: '',
+      location: 0,
+    };
+
+    const definition = _keyDefinitions[keyString];
+    assert(definition, `Unknown key: "${keyString}"`);
+
+    if (definition.key) {
+      description.key = definition.key;
+    }
+    if (shift && definition.shiftKey) {
+      description.key = definition.shiftKey;
+    }
+
+    if (definition.keyCode) {
+      description.keyCode = definition.keyCode;
+    }
+    if (shift && definition.shiftKeyCode) {
+      description.keyCode = definition.shiftKeyCode;
+    }
+
+    if (definition.code) {
+      description.code = definition.code;
+    }
+
+    if (definition.location) {
+      description.location = definition.location;
+    }
+
+    if (description.key.length === 1) {
+      description.text = description.key;
+    }
+
+    if (definition.text) {
+      description.text = definition.text;
+    }
+    if (shift && definition.shiftText) {
+      description.text = definition.shiftText;
+    }
+
+    // if any modifiers besides shift are pressed, no text should be sent
+    if (this._modifiers & ~8) {
+      description.text = '';
+    }
+
+    return description;
+  }
+
+  /**
+   * Dispatches a `keyup` event.
+   *
+   * @param key - Name of key to release, such as `ArrowLeft`.
+   * See {@link KeyInput | KeyInput}
+   * for a list of all key names.
+   */
+  async up(key: KeyInput): Promise<void> {
+    const description = this.#keyDescriptionForString(key);
+
+    this._modifiers &= ~this.#modifierBit(description.key);
+    this.#pressedKeys.delete(description.code);
+    await this.#client.send('Input.dispatchKeyEvent', {
+      type: 'keyUp',
+      modifiers: this._modifiers,
+      key: description.key,
+      windowsVirtualKeyCode: description.keyCode,
+      code: description.code,
+      location: description.location,
+    });
+  }
+
+  /**
+   * Dispatches a `keypress` and `input` event.
+   * This does not send a `keydown` or `keyup` event.
+   *
+   * @remarks
+   * Modifier keys DO NOT effect {@link Keyboard.sendCharacter | Keyboard.sendCharacter}.
+   * Holding down `Shift` will not type the text in upper case.
+   *
+   * @example
+   *
+   * ```ts
+   * page.keyboard.sendCharacter('嗨');
+   * ```
+   *
+   * @param char - Character to send into the page.
+   */
+  async sendCharacter(char: string): Promise<void> {
+    await this.#client.send('Input.insertText', {text: char});
+  }
+
+  private charIsKey(char: string): char is KeyInput {
+    return !!_keyDefinitions[char as KeyInput];
+  }
+
+  /**
+   * Sends a `keydown`, `keypress`/`input`,
+   * and `keyup` event for each character in the text.
+   *
+   * @remarks
+   * To press a special key, like `Control` or `ArrowDown`,
+   * use {@link Keyboard.press}.
+   *
+   * Modifier keys DO NOT effect `keyboard.type`.
+   * Holding down `Shift` will not type the text in upper case.
+   *
+   * @example
+   *
+   * ```ts
+   * await page.keyboard.type('Hello'); // Types instantly
+   * await page.keyboard.type('World', {delay: 100}); // Types slower, like a user
+   * ```
+   *
+   * @param text - A text to type into a focused element.
+   * @param options - An object of options. Accepts delay which,
+   * if specified, is the time to wait between `keydown` and `keyup` in milliseconds.
+   * Defaults to 0.
+   */
+  async type(text: string, options: {delay?: number} = {}): Promise<void> {
+    const delay = options.delay || undefined;
+    for (const char of text) {
+      if (this.charIsKey(char)) {
+        await this.press(char, {delay});
+      } else {
+        if (delay) {
+          await new Promise(f => {
+            return setTimeout(f, delay);
+          });
+        }
+        await this.sendCharacter(char);
+      }
+    }
+  }
+
+  /**
+   * Shortcut for {@link Keyboard.down}
+   * and {@link Keyboard.up}.
+   *
+   * @remarks
+   * If `key` is a single character and no modifier keys besides `Shift`
+   * are being held down, a `keypress`/`input` event will also generated.
+   * The `text` option can be specified to force an input event to be generated.
+   *
+   * Modifier keys DO effect {@link Keyboard.press}.
+   * Holding down `Shift` will type the text in upper case.
+   *
+   * @param key - Name of key to press, such as `ArrowLeft`.
+   * See {@link KeyInput} for a list of all key names.
+   *
+   * @param options - An object of options. Accepts text which, if specified,
+   * generates an input event with this text. Accepts delay which,
+   * if specified, is the time to wait between `keydown` and `keyup` in milliseconds.
+   * Defaults to 0.
+   */
+  async press(
+    key: KeyInput,
+    options: {delay?: number; text?: string} = {}
+  ): Promise<void> {
+    const {delay = null} = options;
+    await this.down(key, options);
+    if (delay) {
+      await new Promise(f => {
+        return setTimeout(f, options.delay);
+      });
+    }
+    await this.up(key);
+  }
+}
+
+/**
+ * @public
+ */
+export type MouseButton = 'left' | 'right' | 'middle' | 'back' | 'forward';
+
+/**
+ * @public
+ */
+export interface MouseOptions {
+  button?: MouseButton;
+  clickCount?: number;
+}
+
+/**
+ * @public
+ */
+export interface MouseWheelOptions {
+  deltaX?: number;
+  deltaY?: number;
+}
+
+/**
+ * The Mouse class operates in main-frame CSS pixels
+ * relative to the top-left corner of the viewport.
+ * @remarks
+ * Every `page` object has its own Mouse, accessible with [`page.mouse`](#pagemouse).
+ *
+ * @example
+ *
+ * ```ts
+ * // Using ‘page.mouse’ to trace a 100x100 square.
+ * await page.mouse.move(0, 0);
+ * await page.mouse.down();
+ * await page.mouse.move(0, 100);
+ * await page.mouse.move(100, 100);
+ * await page.mouse.move(100, 0);
+ * await page.mouse.move(0, 0);
+ * await page.mouse.up();
+ * ```
+ *
+ * **Note**: The mouse events trigger synthetic `MouseEvent`s.
+ * This means that it does not fully replicate the functionality of what a normal user
+ * would be able to do with their mouse.
+ *
+ * For example, dragging and selecting text is not possible using `page.mouse`.
+ * Instead, you can use the {@link https://developer.mozilla.org/en-US/docs/Web/API/DocumentOrShadowRoot/getSelection | `DocumentOrShadowRoot.getSelection()`} functionality implemented in the platform.
+ *
+ * @example
+ * For example, if you want to select all content between nodes:
+ *
+ * ```ts
+ * await page.evaluate(
+ *   (from, to) => {
+ *     const selection = from.getRootNode().getSelection();
+ *     const range = document.createRange();
+ *     range.setStartBefore(from);
+ *     range.setEndAfter(to);
+ *     selection.removeAllRanges();
+ *     selection.addRange(range);
+ *   },
+ *   fromJSHandle,
+ *   toJSHandle
+ * );
+ * ```
+ *
+ * If you then would want to copy-paste your selection, you can use the clipboard api:
+ *
+ * ```ts
+ * // The clipboard api does not allow you to copy, unless the tab is focused.
+ * await page.bringToFront();
+ * await page.evaluate(() => {
+ *   // Copy the selected content to the clipboard
+ *   document.execCommand('copy');
+ *   // Obtain the content of the clipboard as a string
+ *   return navigator.clipboard.readText();
+ * });
+ * ```
+ *
+ * **Note**: If you want access to the clipboard API,
+ * you have to give it permission to do so:
+ *
+ * ```ts
+ * await browser
+ *   .defaultBrowserContext()
+ *   .overridePermissions('<your origin>', [
+ *     'clipboard-read',
+ *     'clipboard-write',
+ *   ]);
+ * ```
+ *
+ * @public
+ */
+export class Mouse {
+  #client: CDPSession;
+  #keyboard: Keyboard;
+  #x = 0;
+  #y = 0;
+  #button: MouseButton | 'none' = 'none';
+
+  /**
+   * @internal
+   */
+  constructor(client: CDPSession, keyboard: Keyboard) {
+    this.#client = client;
+    this.#keyboard = keyboard;
+  }
+
+  /**
+   * Dispatches a `mousemove` event.
+   * @param x - Horizontal position of the mouse.
+   * @param y - Vertical position of the mouse.
+   * @param options - Optional object. If specified, the `steps` property
+   * sends intermediate `mousemove` events when set to `1` (default).
+   */
+  async move(
+    x: number,
+    y: number,
+    options: {steps?: number} = {}
+  ): Promise<void> {
+    const {steps = 1} = options;
+    const fromX = this.#x,
+      fromY = this.#y;
+    this.#x = x;
+    this.#y = y;
+    for (let i = 1; i <= steps; i++) {
+      await this.#client.send('Input.dispatchMouseEvent', {
+        type: 'mouseMoved',
+        button: this.#button,
+        x: fromX + (this.#x - fromX) * (i / steps),
+        y: fromY + (this.#y - fromY) * (i / steps),
+        modifiers: this.#keyboard._modifiers,
+      });
+    }
+  }
+
+  /**
+   * Shortcut for `mouse.move`, `mouse.down` and `mouse.up`.
+   * @param x - Horizontal position of the mouse.
+   * @param y - Vertical position of the mouse.
+   * @param options - Optional `MouseOptions`.
+   */
+  async click(
+    x: number,
+    y: number,
+    options: MouseOptions & {delay?: number} = {}
+  ): Promise<void> {
+    const {delay = null} = options;
+    if (delay !== null) {
+      await this.move(x, y);
+      await this.down(options);
+      await new Promise(f => {
+        return setTimeout(f, delay);
+      });
+      await this.up(options);
+    } else {
+      await this.move(x, y);
+      await this.down(options);
+      await this.up(options);
+    }
+  }
+
+  /**
+   * Dispatches a `mousedown` event.
+   * @param options - Optional `MouseOptions`.
+   */
+  async down(options: MouseOptions = {}): Promise<void> {
+    const {button = 'left', clickCount = 1} = options;
+    this.#button = button;
+    await this.#client.send('Input.dispatchMouseEvent', {
+      type: 'mousePressed',
+      button,
+      x: this.#x,
+      y: this.#y,
+      modifiers: this.#keyboard._modifiers,
+      clickCount,
+    });
+  }
+
+  /**
+   * Dispatches a `mouseup` event.
+   * @param options - Optional `MouseOptions`.
+   */
+  async up(options: MouseOptions = {}): Promise<void> {
+    const {button = 'left', clickCount = 1} = options;
+    this.#button = 'none';
+    await this.#client.send('Input.dispatchMouseEvent', {
+      type: 'mouseReleased',
+      button,
+      x: this.#x,
+      y: this.#y,
+      modifiers: this.#keyboard._modifiers,
+      clickCount,
+    });
+  }
+
+  /**
+   * Dispatches a `mousewheel` event.
+   * @param options - Optional: `MouseWheelOptions`.
+   *
+   * @example
+   * An example of zooming into an element:
+   *
+   * ```ts
+   * await page.goto(
+   *   'https://mdn.mozillademos.org/en-US/docs/Web/API/Element/wheel_event$samples/Scaling_an_element_via_the_wheel?revision=1587366'
+   * );
+   *
+   * const elem = await page.$('div');
+   * const boundingBox = await elem.boundingBox();
+   * await page.mouse.move(
+   *   boundingBox.x + boundingBox.width / 2,
+   *   boundingBox.y + boundingBox.height / 2
+   * );
+   *
+   * await page.mouse.wheel({deltaY: -100});
+   * ```
+   */
+  async wheel(options: MouseWheelOptions = {}): Promise<void> {
+    const {deltaX = 0, deltaY = 0} = options;
+    await this.#client.send('Input.dispatchMouseEvent', {
+      type: 'mouseWheel',
+      x: this.#x,
+      y: this.#y,
+      deltaX,
+      deltaY,
+      modifiers: this.#keyboard._modifiers,
+      pointerType: 'mouse',
+    });
+  }
+
+  /**
+   * Dispatches a `drag` event.
+   * @param start - starting point for drag
+   * @param target - point to drag to
+   */
+  async drag(start: Point, target: Point): Promise<Protocol.Input.DragData> {
+    const promise = new Promise<Protocol.Input.DragData>(resolve => {
+      this.#client.once('Input.dragIntercepted', event => {
+        return resolve(event.data);
+      });
+    });
+    await this.move(start.x, start.y);
+    await this.down();
+    await this.move(target.x, target.y);
+    return promise;
+  }
+
+  /**
+   * Dispatches a `dragenter` event.
+   * @param target - point for emitting `dragenter` event
+   * @param data - drag data containing items and operations mask
+   */
+  async dragEnter(target: Point, data: Protocol.Input.DragData): Promise<void> {
+    await this.#client.send('Input.dispatchDragEvent', {
+      type: 'dragEnter',
+      x: target.x,
+      y: target.y,
+      modifiers: this.#keyboard._modifiers,
+      data,
+    });
+  }
+
+  /**
+   * Dispatches a `dragover` event.
+   * @param target - point for emitting `dragover` event
+   * @param data - drag data containing items and operations mask
+   */
+  async dragOver(target: Point, data: Protocol.Input.DragData): Promise<void> {
+    await this.#client.send('Input.dispatchDragEvent', {
+      type: 'dragOver',
+      x: target.x,
+      y: target.y,
+      modifiers: this.#keyboard._modifiers,
+      data,
+    });
+  }
+
+  /**
+   * Performs a dragenter, dragover, and drop in sequence.
+   * @param target - point to drop on
+   * @param data - drag data containing items and operations mask
+   */
+  async drop(target: Point, data: Protocol.Input.DragData): Promise<void> {
+    await this.#client.send('Input.dispatchDragEvent', {
+      type: 'drop',
+      x: target.x,
+      y: target.y,
+      modifiers: this.#keyboard._modifiers,
+      data,
+    });
+  }
+
+  /**
+   * Performs a drag, dragenter, dragover, and drop in sequence.
+   * @param target - point to drag from
+   * @param target - point to drop on
+   * @param options - An object of options. Accepts delay which,
+   * if specified, is the time to wait between `dragover` and `drop` in milliseconds.
+   * Defaults to 0.
+   */
+  async dragAndDrop(
+    start: Point,
+    target: Point,
+    options: {delay?: number} = {}
+  ): Promise<void> {
+    const {delay = null} = options;
+    const data = await this.drag(start, target);
+    await this.dragEnter(target, data);
+    await this.dragOver(target, data);
+    if (delay) {
+      await new Promise(resolve => {
+        return setTimeout(resolve, delay);
+      });
+    }
+    await this.drop(target, data);
+    await this.up();
+  }
+}
+
+/**
+ * The Touchscreen class exposes touchscreen events.
+ * @public
+ */
+export class Touchscreen {
+  #client: CDPSession;
+  #keyboard: Keyboard;
+
+  /**
+   * @internal
+   */
+  constructor(client: CDPSession, keyboard: Keyboard) {
+    this.#client = client;
+    this.#keyboard = keyboard;
+  }
+
+  /**
+   * Dispatches a `touchstart` and `touchend` event.
+   * @param x - Horizontal position of the tap.
+   * @param y - Vertical position of the tap.
+   */
+  async tap(x: number, y: number): Promise<void> {
+    const touchPoints = [{x: Math.round(x), y: Math.round(y)}];
+    await this.#client.send('Input.dispatchTouchEvent', {
+      type: 'touchStart',
+      touchPoints,
+      modifiers: this.#keyboard._modifiers,
+    });
+    await this.#client.send('Input.dispatchTouchEvent', {
+      type: 'touchEnd',
+      touchPoints: [],
+      modifiers: this.#keyboard._modifiers,
+    });
+  }
+}
diff --git a/remote/test/puppeteer/src/common/IsolatedWorld.ts b/remote/test/puppeteer/src/common/IsolatedWorld.ts
new file mode 100644
index 0000000000..9fe587e7c4
--- /dev/null
+++ b/remote/test/puppeteer/src/common/IsolatedWorld.ts
@@ -0,0 +1,907 @@
+/**
+ * Copyright 2019 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import {Protocol} from 'devtools-protocol';
+import {source as injectedSource} from '../generated/injected.js';
+import {assert} from '../util/assert.js';
+import {createDeferredPromise} from '../util/DeferredPromise.js';
+import {CDPSession} from './Connection.js';
+import {ElementHandle} from './ElementHandle.js';
+import {TimeoutError} from './Errors.js';
+import {ExecutionContext} from './ExecutionContext.js';
+import {Frame} from './Frame.js';
+import {FrameManager} from './FrameManager.js';
+import {MouseButton} from './Input.js';
+import {JSHandle} from './JSHandle.js';
+import {LifecycleWatcher, PuppeteerLifeCycleEvent} from './LifecycleWatcher.js';
+import {TimeoutSettings} from './TimeoutSettings.js';
+import {EvaluateFunc, HandleFor, NodeFor} from './types.js';
+import {
+  createJSHandle,
+  debugError,
+  isNumber,
+  isString,
+  makePredicateString,
+  pageBindingInitString,
+} from './util.js';
+
+// predicateQueryHandler and checkWaitForOptions are declared here so that
+// TypeScript knows about them when used in the predicate function below.
+declare const predicateQueryHandler: (
+  element: Element | Document,
+  selector: string
+) => Promise<Element | Element[] | NodeListOf<Element>>;
+declare const checkWaitForOptions: (
+  node: Node | null,
+  waitForVisible: boolean,
+  waitForHidden: boolean
+) => Element | null | boolean;
+
+/**
+ * @public
+ */
+export interface WaitForSelectorOptions {
+  /**
+   * Wait for the selected element to be present in DOM and to be visible, i.e.
+   * to not have `display: none` or `visibility: hidden` CSS properties.
+   *
+   * @defaultValue `false`
+   */
+  visible?: boolean;
+  /**
+   * Wait for the selected element to not be found in the DOM or to be hidden,
+   * i.e. have `display: none` or `visibility: hidden` CSS properties.
+   *
+   * @defaultValue `false`
+   */
+  hidden?: boolean;
+  /**
+   * Maximum time to wait in milliseconds. Pass `0` to disable timeout.
+   *
+   * The default value can be changed by using {@link Page.setDefaultTimeout}
+   *
+   * @defaultValue `30000` (30 seconds)
+   */
+  timeout?: number;
+}
+
+/**
+ * @internal
+ */
+export interface PageBinding {
+  name: string;
+  pptrFunction: Function;
+}
+
+/**
+ * A unique key for {@link IsolatedWorldChart} to denote the default world.
+ * Execution contexts are automatically created in the default world.
+ *
+ * @internal
+ */
+export const MAIN_WORLD = Symbol('mainWorld');
+/**
+ * A unique key for {@link IsolatedWorldChart} to denote the puppeteer world.
+ * This world contains all puppeteer-internal bindings/code.
+ *
+ * @internal
+ */
+export const PUPPETEER_WORLD = Symbol('puppeteerWorld');
+/**
+ * @internal
+ */
+export interface IsolatedWorldChart {
+  [key: string]: IsolatedWorld;
+  [MAIN_WORLD]: IsolatedWorld;
+  [PUPPETEER_WORLD]: IsolatedWorld;
+}
+
+/**
+ * @internal
+ */
+export class IsolatedWorld {
+  #frame: Frame;
+  #injected: boolean;
+  #document?: ElementHandle<Document>;
+  #context = createDeferredPromise<ExecutionContext>();
+  #detached = false;
+
+  // Set of bindings that have been registered in the current context.
+  #ctxBindings = new Set<string>();
+
+  // Contains mapping from functions that should be bound to Puppeteer functions.
+  #boundFunctions = new Map<string, Function>();
+  #waitTasks = new Set<WaitTask>();
+
+  get _waitTasks(): Set<WaitTask> {
+    return this.#waitTasks;
+  }
+
+  get _boundFunctions(): Map<string, Function> {
+    return this.#boundFunctions;
+  }
+
+  static #bindingIdentifier = (name: string, contextId: number) => {
+    return `${name}_${contextId}`;
+  };
+
+  constructor(frame: Frame, injected = false) {
+    // Keep own reference to client because it might differ from the FrameManager's
+    // client for OOP iframes.
+    this.#frame = frame;
+    this.#injected = injected;
+    this.#client.on('Runtime.bindingCalled', this.#onBindingCalled);
+  }
+
+  get #client(): CDPSession {
+    return this.#frame._client();
+  }
+
+  get #frameManager(): FrameManager {
+    return this.#frame._frameManager;
+  }
+
+  get #timeoutSettings(): TimeoutSettings {
+    return this.#frameManager.timeoutSettings;
+  }
+
+  frame(): Frame {
+    return this.#frame;
+  }
+
+  clearContext(): void {
+    this.#document = undefined;
+    this.#context = createDeferredPromise();
+  }
+
+  setContext(context: ExecutionContext): void {
+    if (this.#injected) {
+      context.evaluate(injectedSource).catch(debugError);
+    }
+    this.#ctxBindings.clear();
+    this.#context.resolve(context);
+    for (const waitTask of this._waitTasks) {
+      waitTask.rerun();
+    }
+  }
+
+  hasContext(): boolean {
+    return this.#context.resolved();
+  }
+
+  _detach(): void {
+    this.#detached = true;
+    this.#client.off('Runtime.bindingCalled', this.#onBindingCalled);
+    for (const waitTask of this._waitTasks) {
+      waitTask.terminate(
+        new Error('waitForFunction failed: frame got detached.')
+      );
+    }
+  }
+
+  executionContext(): Promise<ExecutionContext> {
+    if (this.#detached) {
+      throw new Error(
+        `Execution context is not available in detached frame "${this.#frame.url()}" (are you trying to evaluate?)`
+      );
+    }
+    if (this.#context === null) {
+      throw new Error(`Execution content promise is missing`);
+    }
+    return this.#context;
+  }
+
+  async evaluateHandle<
+    Params extends unknown[],
+    Func extends EvaluateFunc<Params> = EvaluateFunc<Params>
+  >(
+    pageFunction: Func | string,
+    ...args: Params
+  ): Promise<HandleFor<Awaited<ReturnType<Func>>>> {
+    const context = await this.executionContext();
+    return context.evaluateHandle(pageFunction, ...args);
+  }
+
+  async evaluate<
+    Params extends unknown[],
+    Func extends EvaluateFunc<Params> = EvaluateFunc<Params>
+  >(
+    pageFunction: Func | string,
+    ...args: Params
+  ): Promise<Awaited<ReturnType<Func>>> {
+    const context = await this.executionContext();
+    return context.evaluate(pageFunction, ...args);
+  }
+
+  async $<Selector extends string>(
+    selector: Selector
+  ): Promise<ElementHandle<NodeFor<Selector>> | null> {
+    const document = await this.document();
+    return document.$(selector);
+  }
+
+  async $$<Selector extends string>(
+    selector: Selector
+  ): Promise<Array<ElementHandle<NodeFor<Selector>>>> {
+    const document = await this.document();
+    return document.$$(selector);
+  }
+
+  async document(): Promise<ElementHandle<Document>> {
+    if (this.#document) {
+      return this.#document;
+    }
+    const context = await this.executionContext();
+    this.#document = await context.evaluateHandle(() => {
+      return document;
+    });
+    return this.#document;
+  }
+
+  async $x(expression: string): Promise<Array<ElementHandle<Node>>> {
+    const document = await this.document();
+    return document.$x(expression);
+  }
+
+  async $eval<
+    Selector extends string,
+    Params extends unknown[],
+    Func extends EvaluateFunc<
+      [ElementHandle<NodeFor<Selector>>, ...Params]
+    > = EvaluateFunc<[ElementHandle<NodeFor<Selector>>, ...Params]>
+  >(
+    selector: Selector,
+    pageFunction: Func | string,
+    ...args: Params
+  ): Promise<Awaited<ReturnType<Func>>> {
+    const document = await this.document();
+    return document.$eval(selector, pageFunction, ...args);
+  }
+
+  async $$eval<
+    Selector extends string,
+    Params extends unknown[],
+    Func extends EvaluateFunc<
+      [Array<NodeFor<Selector>>, ...Params]
+    > = EvaluateFunc<[Array<NodeFor<Selector>>, ...Params]>
+  >(
+    selector: Selector,
+    pageFunction: Func | string,
+    ...args: Params
+  ): Promise<Awaited<ReturnType<Func>>> {
+    const document = await this.document();
+    return document.$$eval(selector, pageFunction, ...args);
+  }
+
+  async content(): Promise<string> {
+    return await this.evaluate(() => {
+      let retVal = '';
+      if (document.doctype) {
+        retVal = new XMLSerializer().serializeToString(document.doctype);
+      }
+      if (document.documentElement) {
+        retVal += document.documentElement.outerHTML;
+      }
+      return retVal;
+    });
+  }
+
+  async setContent(
+    html: string,
+    options: {
+      timeout?: number;
+      waitUntil?: PuppeteerLifeCycleEvent | PuppeteerLifeCycleEvent[];
+    } = {}
+  ): Promise<void> {
+    const {
+      waitUntil = ['load'],
+      timeout = this.#timeoutSettings.navigationTimeout(),
+    } = options;
+    // We rely upon the fact that document.open() will reset frame lifecycle with "init"
+    // lifecycle event. @see https://crrev.com/608658
+    await this.evaluate(html => {
+      document.open();
+      document.write(html);
+      document.close();
+    }, html);
+    const watcher = new LifecycleWatcher(
+      this.#frameManager,
+      this.#frame,
+      waitUntil,
+      timeout
+    );
+    const error = await Promise.race([
+      watcher.timeoutOrTerminationPromise(),
+      watcher.lifecyclePromise(),
+    ]);
+    watcher.dispose();
+    if (error) {
+      throw error;
+    }
+  }
+
+  async click(
+    selector: string,
+    options: {delay?: number; button?: MouseButton; clickCount?: number}
+  ): Promise<void> {
+    const handle = await this.$(selector);
+    assert(handle, `No element found for selector: ${selector}`);
+    await handle.click(options);
+    await handle.dispose();
+  }
+
+  async focus(selector: string): Promise<void> {
+    const handle = await this.$(selector);
+    assert(handle, `No element found for selector: ${selector}`);
+    await handle.focus();
+    await handle.dispose();
+  }
+
+  async hover(selector: string): Promise<void> {
+    const handle = await this.$(selector);
+    assert(handle, `No element found for selector: ${selector}`);
+    await handle.hover();
+    await handle.dispose();
+  }
+
+  async select(selector: string, ...values: string[]): Promise<string[]> {
+    const handle = await this.$(selector);
+    assert(handle, `No element found for selector: ${selector}`);
+    const result = await handle.select(...values);
+    await handle.dispose();
+    return result;
+  }
+
+  async tap(selector: string): Promise<void> {
+    const handle = await this.$(selector);
+    assert(handle, `No element found for selector: ${selector}`);
+    await handle.tap();
+    await handle.dispose();
+  }
+
+  async type(
+    selector: string,
+    text: string,
+    options?: {delay: number}
+  ): Promise<void> {
+    const handle = await this.$(selector);
+    assert(handle, `No element found for selector: ${selector}`);
+    await handle.type(text, options);
+    await handle.dispose();
+  }
+
+  // If multiple waitFor are set up asynchronously, we need to wait for the
+  // first one to set up the binding in the page before running the others.
+  #settingUpBinding: Promise<void> | null = null;
+
+  async _addBindingToContext(
+    context: ExecutionContext,
+    name: string
+  ): Promise<void> {
+    // Previous operation added the binding so we are done.
+    if (
+      this.#ctxBindings.has(
+        IsolatedWorld.#bindingIdentifier(name, context._contextId)
+      )
+    ) {
+      return;
+    }
+    // Wait for other operation to finish
+    if (this.#settingUpBinding) {
+      await this.#settingUpBinding;
+      return this._addBindingToContext(context, name);
+    }
+
+    const bind = async (name: string) => {
+      const expression = pageBindingInitString('internal', name);
+      try {
+        // TODO: In theory, it would be enough to call this just once
+        await context._client.send('Runtime.addBinding', {
+          name,
+          // eslint-disable-next-line @typescript-eslint/ban-ts-comment
+          // @ts-ignore The protocol definition is not up to date.
+          executionContextName: context._contextName,
+        });
+        await context.evaluate(expression);
+      } catch (error) {
+        // We could have tried to evaluate in a context which was already
+        // destroyed. This happens, for example, if the page is navigated while
+        // we are trying to add the binding
+        const ctxDestroyed = (error as Error).message.includes(
+          'Execution context was destroyed'
+        );
+        const ctxNotFound = (error as Error).message.includes(
+          'Cannot find context with specified id'
+        );
+        if (ctxDestroyed || ctxNotFound) {
+          return;
+        } else {
+          debugError(error);
+          return;
+        }
+      }
+      this.#ctxBindings.add(
+        IsolatedWorld.#bindingIdentifier(name, context._contextId)
+      );
+    };
+
+    this.#settingUpBinding = bind(name);
+    await this.#settingUpBinding;
+    this.#settingUpBinding = null;
+  }
+
+  #onBindingCalled = async (
+    event: Protocol.Runtime.BindingCalledEvent
+  ): Promise<void> => {
+    let payload: {type: string; name: string; seq: number; args: unknown[]};
+    if (!this.hasContext()) {
+      return;
+    }
+    const context = await this.executionContext();
+    try {
+      payload = JSON.parse(event.payload);
+    } catch {
+      // The binding was either called by something in the page or it was
+      // called before our wrapper was initialized.
+      return;
+    }
+    const {type, name, seq, args} = payload;
+    if (
+      type !== 'internal' ||
+      !this.#ctxBindings.has(
+        IsolatedWorld.#bindingIdentifier(name, context._contextId)
+      )
+    ) {
+      return;
+    }
+    if (context._contextId !== event.executionContextId) {
+      return;
+    }
+    try {
+      const fn = this._boundFunctions.get(name);
+      if (!fn) {
+        throw new Error(`Bound function $name is not found`);
+      }
+      const result = await fn(...args);
+      await context.evaluate(deliverResult, name, seq, result);
+    } catch (error) {
+      // The WaitTask may already have been resolved by timing out, or the
+      // exection context may have been destroyed.
+      // In both caes, the promises above are rejected with a protocol error.
+      // We can safely ignores these, as the WaitTask is re-installed in
+      // the next execution context if needed.
+      if ((error as Error).message.includes('Protocol error')) {
+        return;
+      }
+      debugError(error);
+    }
+    function deliverResult(name: string, seq: number, result: unknown): void {
+      // eslint-disable-next-line @typescript-eslint/ban-ts-comment
+      // @ts-ignore Code is evaluated in a different context.
+      (globalThis as any)[name].callbacks.get(seq).resolve(result);
+      // eslint-disable-next-line @typescript-eslint/ban-ts-comment
+      // @ts-ignore Code is evaluated in a different context.
+      (globalThis as any)[name].callbacks.delete(seq);
+    }
+  };
+
+  async _waitForSelectorInPage(
+    queryOne: Function,
+    root: ElementHandle<Node> | undefined,
+    selector: string,
+    options: WaitForSelectorOptions,
+    binding?: PageBinding
+  ): Promise<JSHandle<unknown> | null> {
+    const {
+      visible: waitForVisible = false,
+      hidden: waitForHidden = false,
+      timeout = this.#timeoutSettings.timeout(),
+    } = options;
+    const polling = waitForVisible || waitForHidden ? 'raf' : 'mutation';
+    const title = `selector \`${selector}\`${
+      waitForHidden ? ' to be hidden' : ''
+    }`;
+    async function predicate(
+      root: Element | Document,
+      selector: string,
+      waitForVisible: boolean,
+      waitForHidden: boolean
+    ): Promise<Node | null | boolean> {
+      const node = (await predicateQueryHandler(root, selector)) as Element;
+      return checkWaitForOptions(node, waitForVisible, waitForHidden);
+    }
+    const waitTaskOptions: WaitTaskOptions = {
+      isolatedWorld: this,
+      predicateBody: makePredicateString(predicate, queryOne),
+      predicateAcceptsContextElement: true,
+      title,
+      polling,
+      timeout,
+      args: [selector, waitForVisible, waitForHidden],
+      binding,
+      root,
+    };
+    const waitTask = new WaitTask(waitTaskOptions);
+    return waitTask.promise;
+  }
+
+  waitForFunction(
+    pageFunction: Function | string,
+    options: {polling?: string | number; timeout?: number} = {},
+    ...args: unknown[]
+  ): Promise<JSHandle> {
+    const {polling = 'raf', timeout = this.#timeoutSettings.timeout()} =
+      options;
+    const waitTaskOptions: WaitTaskOptions = {
+      isolatedWorld: this,
+      predicateBody: pageFunction,
+      predicateAcceptsContextElement: false,
+      title: 'function',
+      polling,
+      timeout,
+      args,
+    };
+    const waitTask = new WaitTask(waitTaskOptions);
+    return waitTask.promise;
+  }
+
+  async title(): Promise<string> {
+    return this.evaluate(() => {
+      return document.title;
+    });
+  }
+
+  async adoptBackendNode(
+    backendNodeId?: Protocol.DOM.BackendNodeId
+  ): Promise<JSHandle<Node>> {
+    const executionContext = await this.executionContext();
+    const {object} = await this.#client.send('DOM.resolveNode', {
+      backendNodeId: backendNodeId,
+      executionContextId: executionContext._contextId,
+    });
+    return createJSHandle(executionContext, object) as JSHandle<Node>;
+  }
+
+  async adoptHandle<T extends JSHandle<Node>>(handle: T): Promise<T> {
+    const executionContext = await this.executionContext();
+    assert(
+      handle.executionContext() !== executionContext,
+      'Cannot adopt handle that already belongs to this execution context'
+    );
+    const nodeInfo = await this.#client.send('DOM.describeNode', {
+      objectId: handle.remoteObject().objectId,
+    });
+    return (await this.adoptBackendNode(nodeInfo.node.backendNodeId)) as T;
+  }
+
+  async transferHandle<T extends JSHandle<Node>>(handle: T): Promise<T> {
+    const result = await this.adoptHandle(handle);
+    await handle.dispose();
+    return result;
+  }
+}
+
+/**
+ * @internal
+ */
+export interface WaitTaskOptions {
+  isolatedWorld: IsolatedWorld;
+  predicateBody: Function | string;
+  predicateAcceptsContextElement: boolean;
+  title: string;
+  polling: string | number;
+  timeout: number;
+  binding?: PageBinding;
+  args: unknown[];
+  root?: ElementHandle<Node>;
+}
+
+const noop = (): void => {};
+
+/**
+ * @internal
+ */
+export class WaitTask {
+  #isolatedWorld: IsolatedWorld;
+  #polling: 'raf' | 'mutation' | number;
+  #timeout: number;
+  #predicateBody: string;
+  #predicateAcceptsContextElement: boolean;
+  #args: unknown[];
+  #binding?: PageBinding;
+  #runCount = 0;
+  #resolve: (x: JSHandle) => void = noop;
+  #reject: (x: Error) => void = noop;
+  #timeoutTimer?: NodeJS.Timeout;
+  #terminated = false;
+  #root: ElementHandle<Node> | null = null;
+
+  promise: Promise<JSHandle>;
+
+  constructor(options: WaitTaskOptions) {
+    if (isString(options.polling)) {
+      assert(
+        options.polling === 'raf' || options.polling === 'mutation',
+        'Unknown polling option: ' + options.polling
+      );
+    } else if (isNumber(options.polling)) {
+      assert(
+        options.polling > 0,
+        'Cannot poll with non-positive interval: ' + options.polling
+      );
+    } else {
+      throw new Error('Unknown polling options: ' + options.polling);
+    }
+
+    function getPredicateBody(predicateBody: Function | string) {
+      if (isString(predicateBody)) {
+        return `return (${predicateBody});`;
+      }
+      return `return (${predicateBody})(...args);`;
+    }
+
+    this.#isolatedWorld = options.isolatedWorld;
+    this.#polling = options.polling;
+    this.#timeout = options.timeout;
+    this.#root = options.root || null;
+    this.#predicateBody = getPredicateBody(options.predicateBody);
+    this.#predicateAcceptsContextElement =
+      options.predicateAcceptsContextElement;
+    this.#args = options.args;
+    this.#binding = options.binding;
+    this.#runCount = 0;
+    this.#isolatedWorld._waitTasks.add(this);
+    if (this.#binding) {
+      this.#isolatedWorld._boundFunctions.set(
+        this.#binding.name,
+        this.#binding.pptrFunction
+      );
+    }
+    this.promise = new Promise<JSHandle>((resolve, reject) => {
+      this.#resolve = resolve;
+      this.#reject = reject;
+    });
+    // Since page navigation requires us to re-install the pageScript, we should track
+    // timeout on our end.
+    if (options.timeout) {
+      const timeoutError = new TimeoutError(
+        `waiting for ${options.title} failed: timeout ${options.timeout}ms exceeded`
+      );
+      this.#timeoutTimer = setTimeout(() => {
+        return this.terminate(timeoutError);
+      }, options.timeout);
+    }
+    this.rerun();
+  }
+
+  terminate(error: Error): void {
+    this.#terminated = true;
+    this.#reject(error);
+    this.#cleanup();
+  }
+
+  async rerun(): Promise<void> {
+    const runCount = ++this.#runCount;
+    let success: JSHandle | null = null;
+    let error: Error | null = null;
+    const context = await this.#isolatedWorld.executionContext();
+    if (this.#terminated || runCount !== this.#runCount) {
+      return;
+    }
+    if (this.#binding) {
+      await this.#isolatedWorld._addBindingToContext(
+        context,
+        this.#binding.name
+      );
+    }
+    if (this.#terminated || runCount !== this.#runCount) {
+      return;
+    }
+    try {
+      success = await context.evaluateHandle(
+        waitForPredicatePageFunction,
+        this.#root || null,
+        this.#predicateBody,
+        this.#predicateAcceptsContextElement,
+        this.#polling,
+        this.#timeout,
+        ...this.#args
+      );
+    } catch (error_) {
+      error = error_ as Error;
+    }
+
+    if (this.#terminated || runCount !== this.#runCount) {
+      if (success) {
+        await success.dispose();
+      }
+      return;
+    }
+
+    // Ignore timeouts in pageScript - we track timeouts ourselves.
+    // If the frame's execution context has already changed, `frame.evaluate` will
+    // throw an error - ignore this predicate run altogether.
+    if (
+      !error &&
+      (await this.#isolatedWorld
+        .evaluate(s => {
+          return !s;
+        }, success)
+        .catch(() => {
+          return true;
+        }))
+    ) {
+      if (!success) {
+        throw new Error('Assertion: result handle is not available');
+      }
+      await success.dispose();
+      return;
+    }
+    if (error) {
+      if (error.message.includes('TypeError: binding is not a function')) {
+        return this.rerun();
+      }
+      // When frame is detached the task should have been terminated by the IsolatedWorld.
+      // This can fail if we were adding this task while the frame was detached,
+      // so we terminate here instead.
+      if (
+        error.message.includes(
+          'Execution context is not available in detached frame'
+        )
+      ) {
+        this.terminate(
+          new Error('waitForFunction failed: frame got detached.')
+        );
+        return;
+      }
+
+      // When the page is navigated, the promise is rejected.
+      // We will try again in the new execution context.
+      if (error.message.includes('Execution context was destroyed')) {
+        return;
+      }
+
+      // We could have tried to evaluate in a context which was already
+      // destroyed.
+      if (error.message.includes('Cannot find context with specified id')) {
+        return;
+      }
+
+      this.#reject(error);
+    } else {
+      if (!success) {
+        throw new Error('Assertion: result handle is not available');
+      }
+      this.#resolve(success);
+    }
+    this.#cleanup();
+  }
+
+  #cleanup(): void {
+    this.#timeoutTimer !== undefined && clearTimeout(this.#timeoutTimer);
+    this.#isolatedWorld._waitTasks.delete(this);
+  }
+}
+
+async function waitForPredicatePageFunction(
+  root: Node | null,
+  predicateBody: string,
+  predicateAcceptsContextElement: boolean,
+  polling: 'raf' | 'mutation' | number,
+  timeout: number,
+  ...args: unknown[]
+): Promise<unknown> {
+  root = root || document;
+  const predicate = new Function('...args', predicateBody);
+  let timedOut = false;
+  if (timeout) {
+    setTimeout(() => {
+      return (timedOut = true);
+    }, timeout);
+  }
+  switch (polling) {
+    case 'raf':
+      return await pollRaf();
+    case 'mutation':
+      return await pollMutation();
+    default:
+      return await pollInterval(polling);
+  }
+
+  async function pollMutation(): Promise<unknown> {
+    const success = predicateAcceptsContextElement
+      ? await predicate(root, ...args)
+      : await predicate(...args);
+    if (success) {
+      return Promise.resolve(success);
+    }
+
+    let fulfill = (_?: unknown) => {};
+    const result = new Promise(x => {
+      return (fulfill = x);
+    });
+    const observer = new MutationObserver(async () => {
+      if (timedOut) {
+        observer.disconnect();
+        fulfill();
+      }
+      const success = predicateAcceptsContextElement
+        ? await predicate(root, ...args)
+        : await predicate(...args);
+      if (success) {
+        observer.disconnect();
+        fulfill(success);
+      }
+    });
+    if (!root) {
+      throw new Error('Root element is not found.');
+    }
+    observer.observe(root, {
+      childList: true,
+      subtree: true,
+      attributes: true,
+    });
+    return result;
+  }
+
+  async function pollRaf(): Promise<unknown> {
+    let fulfill = (_?: unknown): void => {};
+    const result = new Promise(x => {
+      return (fulfill = x);
+    });
+    await onRaf();
+    return result;
+
+    async function onRaf(): Promise<void> {
+      if (timedOut) {
+        fulfill();
+        return;
+      }
+      const success = predicateAcceptsContextElement
+        ? await predicate(root, ...args)
+        : await predicate(...args);
+      if (success) {
+        fulfill(success);
+      } else {
+        requestAnimationFrame(onRaf);
+      }
+    }
+  }
+
+  async function pollInterval(pollInterval: number): Promise<unknown> {
+    let fulfill = (_?: unknown): void => {};
+    const result = new Promise(x => {
+      return (fulfill = x);
+    });
+    await onTimeout();
+    return result;
+
+    async function onTimeout(): Promise<void> {
+      if (timedOut) {
+        fulfill();
+        return;
+      }
+      const success = predicateAcceptsContextElement
+        ? await predicate(root, ...args)
+        : await predicate(...args);
+      if (success) {
+        fulfill(success);
+      } else {
+        setTimeout(onTimeout, pollInterval);
+      }
+    }
+  }
+}
diff --git a/remote/test/puppeteer/src/common/JSHandle.ts b/remote/test/puppeteer/src/common/JSHandle.ts
new file mode 100644
index 0000000000..55613eb610
--- /dev/null
+++ b/remote/test/puppeteer/src/common/JSHandle.ts
@@ -0,0 +1,332 @@
+/**
+ * Copyright 2019 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import {Protocol} from 'devtools-protocol';
+import {assert} from '../util/assert.js';
+import {CDPSession} from './Connection.js';
+import type {ElementHandle} from './ElementHandle.js';
+import {ExecutionContext} from './ExecutionContext.js';
+import {MouseButton} from './Input.js';
+import {EvaluateFunc, HandleFor, HandleOr} from './types.js';
+import {createJSHandle, releaseObject, valueFromRemoteObject} from './util.js';
+
+declare const __JSHandleSymbol: unique symbol;
+
+/**
+ * @public
+ */
+export interface BoxModel {
+  content: Point[];
+  padding: Point[];
+  border: Point[];
+  margin: Point[];
+  width: number;
+  height: number;
+}
+
+/**
+ * @public
+ */
+export interface BoundingBox extends Point {
+  /**
+   * the width of the element in pixels.
+   */
+  width: number;
+  /**
+   * the height of the element in pixels.
+   */
+  height: number;
+}
+
+/**
+ * Represents a reference to a JavaScript object. Instances can be created using
+ * {@link Page.evaluateHandle}.
+ *
+ * Handles prevent the referenced JavaScript object from being garbage-collected
+ * unless the handle is purposely {@link JSHandle.dispose | disposed}. JSHandles
+ * are auto-disposed when their associated frame is navigated away or the parent
+ * context gets destroyed.
+ *
+ * Handles can be used as arguments for any evaluation function such as
+ * {@link Page.$eval}, {@link Page.evaluate}, and {@link Page.evaluateHandle}.
+ * They are resolved to their referenced object.
+ *
+ * @example
+ *
+ * ```ts
+ * const windowHandle = await page.evaluateHandle(() => window);
+ * ```
+ *
+ * @public
+ */
+export class JSHandle<T = unknown> {
+  /**
+   * Used for nominally typing {@link JSHandle}.
+   */
+  [__JSHandleSymbol]?: T;
+
+  #disposed = false;
+  #context: ExecutionContext;
+  #remoteObject: Protocol.Runtime.RemoteObject;
+
+  /**
+   * @internal
+   */
+  get client(): CDPSession {
+    return this.#context._client;
+  }
+
+  /**
+   * @internal
+   */
+  get disposed(): boolean {
+    return this.#disposed;
+  }
+
+  /**
+   * @internal
+   */
+  constructor(
+    context: ExecutionContext,
+    remoteObject: Protocol.Runtime.RemoteObject
+  ) {
+    this.#context = context;
+    this.#remoteObject = remoteObject;
+  }
+
+  /**
+   * @internal
+   */
+  executionContext(): ExecutionContext {
+    return this.#context;
+  }
+
+  /**
+   * Evaluates the given function with the current handle as its first argument.
+   *
+   * @see {@link ExecutionContext.evaluate} for more details.
+   */
+  async evaluate<
+    Params extends unknown[],
+    Func extends EvaluateFunc<[this, ...Params]> = EvaluateFunc<
+      [this, ...Params]
+    >
+  >(
+    pageFunction: Func | string,
+    ...args: Params
+  ): // @ts-expect-error Circularity here is okay because we only need the return
+  // type which doesn't use `this`.
+  Promise<Awaited<ReturnType<Func>>> {
+    return await this.executionContext().evaluate(pageFunction, this, ...args);
+  }
+
+  /**
+   * Evaluates the given function with the current handle as its first argument.
+   *
+   * @see {@link ExecutionContext.evaluateHandle} for more details.
+   */
+  async evaluateHandle<
+    Params extends unknown[],
+    Func extends EvaluateFunc<[this, ...Params]> = EvaluateFunc<
+      [this, ...Params]
+    >
+  >(
+    pageFunction: Func | string,
+    ...args: Params
+  ): // @ts-expect-error Circularity here is okay because we only need the return
+  // type which doesn't use `this`.
+  Promise<HandleFor<Awaited<ReturnType<Func>>>> {
+    return await this.executionContext().evaluateHandle(
+      pageFunction,
+      this,
+      ...args
+    );
+  }
+
+  /**
+   * Fetches a single property from the referenced object.
+   */
+  async getProperty<K extends keyof T>(
+    propertyName: HandleOr<K>
+  ): Promise<HandleFor<T[K]>>;
+  async getProperty(propertyName: string): Promise<JSHandle<unknown>>;
+  async getProperty<K extends keyof T>(
+    propertyName: HandleOr<K>
+  ): Promise<HandleFor<T[K]>> {
+    return this.evaluateHandle((object, propertyName) => {
+      return object[propertyName];
+    }, propertyName);
+  }
+
+  /**
+   * Gets a map of handles representing the properties of the current handle.
+   *
+   * @example
+   *
+   * ```ts
+   * const listHandle = await page.evaluateHandle(() => document.body.children);
+   * const properties = await listHandle.getProperties();
+   * const children = [];
+   * for (const property of properties.values()) {
+   *   const element = property.asElement();
+   *   if (element) {
+   *     children.push(element);
+   *   }
+   * }
+   * children; // holds elementHandles to all children of document.body
+   * ```
+   */
+  async getProperties(): Promise<Map<string, JSHandle>> {
+    assert(this.#remoteObject.objectId);
+    // We use Runtime.getProperties rather than iterative building because the
+    // iterative approach might create a distorted snapshot.
+    const response = await this.client.send('Runtime.getProperties', {
+      objectId: this.#remoteObject.objectId,
+      ownProperties: true,
+    });
+    const result = new Map<string, JSHandle>();
+    for (const property of response.result) {
+      if (!property.enumerable || !property.value) {
+        continue;
+      }
+      result.set(property.name, createJSHandle(this.#context, property.value));
+    }
+    return result;
+  }
+
+  /**
+   * @returns A vanilla object representing the serializable portions of the
+   * referenced object.
+   * @throws Throws if the object cannot be serialized due to circularity.
+   *
+   * @remarks
+   * If the object has a `toJSON` function, it **will not** be called.
+   */
+  async jsonValue(): Promise<T> {
+    if (!this.#remoteObject.objectId) {
+      return valueFromRemoteObject(this.#remoteObject);
+    }
+    const value = await this.evaluate(object => {
+      return object;
+    });
+    if (value === undefined) {
+      throw new Error('Could not serialize referenced object');
+    }
+    return value;
+  }
+
+  /**
+   * @returns Either `null` or the handle itself if the handle is an
+   * instance of {@link ElementHandle}.
+   */
+  asElement(): ElementHandle<Node> | null {
+    return null;
+  }
+
+  /**
+   * Releases the object referenced by the handle for garbage collection.
+   */
+  async dispose(): Promise<void> {
+    if (this.#disposed) {
+      return;
+    }
+    this.#disposed = true;
+    await releaseObject(this.client, this.#remoteObject);
+  }
+
+  /**
+   * Returns a string representation of the JSHandle.
+   *
+   * @remarks
+   * Useful during debugging.
+   */
+  toString(): string {
+    if (!this.#remoteObject.objectId) {
+      return 'JSHandle:' + valueFromRemoteObject(this.#remoteObject);
+    }
+    const type = this.#remoteObject.subtype || this.#remoteObject.type;
+    return 'JSHandle@' + type;
+  }
+
+  /**
+   * Provides access to the
+   * [Protocol.Runtime.RemoteObject](https://chromedevtools.github.io/devtools-protocol/tot/Runtime/#type-RemoteObject)
+   * backing this handle.
+   */
+  remoteObject(): Protocol.Runtime.RemoteObject {
+    return this.#remoteObject;
+  }
+}
+
+/**
+ * @public
+ */
+export interface Offset {
+  /**
+   * x-offset for the clickable point relative to the top-left corner of the border box.
+   */
+  x: number;
+  /**
+   * y-offset for the clickable point relative to the top-left corner of the border box.
+   */
+  y: number;
+}
+
+/**
+ * @public
+ */
+export interface ClickOptions {
+  /**
+   * Time to wait between `mousedown` and `mouseup` in milliseconds.
+   *
+   * @defaultValue 0
+   */
+  delay?: number;
+  /**
+   * @defaultValue 'left'
+   */
+  button?: MouseButton;
+  /**
+   * @defaultValue 1
+   */
+  clickCount?: number;
+  /**
+   * Offset for the clickable point relative to the top-left corner of the border box.
+   */
+  offset?: Offset;
+}
+
+/**
+ * @public
+ */
+export interface PressOptions {
+  /**
+   * Time to wait between `keydown` and `keyup` in milliseconds. Defaults to 0.
+   */
+  delay?: number;
+  /**
+   * If specified, generates an input event with this text.
+   */
+  text?: string;
+}
+
+/**
+ * @public
+ */
+export interface Point {
+  x: number;
+  y: number;
+}
diff --git a/remote/test/puppeteer/src/common/LifecycleWatcher.ts b/remote/test/puppeteer/src/common/LifecycleWatcher.ts
new file mode 100644
index 0000000000..b68e22dcd4
--- /dev/null
+++ b/remote/test/puppeteer/src/common/LifecycleWatcher.ts
@@ -0,0 +1,309 @@
+/**
+ * Copyright 2019 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import {assert} from '../util/assert.js';
+import {
+  addEventListener,
+  PuppeteerEventListener,
+  removeEventListeners,
+} from './util.js';
+import {
+  DeferredPromise,
+  createDeferredPromise,
+} from '../util/DeferredPromise.js';
+import {TimeoutError} from './Errors.js';
+import {FrameManager, FrameManagerEmittedEvents} from './FrameManager.js';
+import {Frame} from './Frame.js';
+import {HTTPRequest} from './HTTPRequest.js';
+import {HTTPResponse} from './HTTPResponse.js';
+import {NetworkManagerEmittedEvents} from './NetworkManager.js';
+import {CDPSessionEmittedEvents} from './Connection.js';
+/**
+ * @public
+ */
+export type PuppeteerLifeCycleEvent =
+  | 'load'
+  | 'domcontentloaded'
+  | 'networkidle0'
+  | 'networkidle2';
+
+/**
+ * @public
+ */
+export type ProtocolLifeCycleEvent =
+  | 'load'
+  | 'DOMContentLoaded'
+  | 'networkIdle'
+  | 'networkAlmostIdle';
+
+const puppeteerToProtocolLifecycle = new Map<
+  PuppeteerLifeCycleEvent,
+  ProtocolLifeCycleEvent
+>([
+  ['load', 'load'],
+  ['domcontentloaded', 'DOMContentLoaded'],
+  ['networkidle0', 'networkIdle'],
+  ['networkidle2', 'networkAlmostIdle'],
+]);
+
+const noop = (): void => {};
+
+/**
+ * @internal
+ */
+export class LifecycleWatcher {
+  #expectedLifecycle: ProtocolLifeCycleEvent[];
+  #frameManager: FrameManager;
+  #frame: Frame;
+  #timeout: number;
+  #navigationRequest: HTTPRequest | null = null;
+  #eventListeners: PuppeteerEventListener[];
+  #initialLoaderId: string;
+
+  #sameDocumentNavigationCompleteCallback: (x?: Error) => void = noop;
+  #sameDocumentNavigationPromise = new Promise<Error | undefined>(fulfill => {
+    this.#sameDocumentNavigationCompleteCallback = fulfill;
+  });
+
+  #lifecycleCallback: () => void = noop;
+  #lifecyclePromise: Promise<void> = new Promise(fulfill => {
+    this.#lifecycleCallback = fulfill;
+  });
+
+  #newDocumentNavigationCompleteCallback: (x?: Error) => void = noop;
+  #newDocumentNavigationPromise: Promise<Error | undefined> = new Promise(
+    fulfill => {
+      this.#newDocumentNavigationCompleteCallback = fulfill;
+    }
+  );
+
+  #terminationCallback: (x?: Error) => void = noop;
+  #terminationPromise: Promise<Error | undefined> = new Promise(fulfill => {
+    this.#terminationCallback = fulfill;
+  });
+
+  #timeoutPromise: Promise<TimeoutError | undefined>;
+
+  #maximumTimer?: NodeJS.Timeout;
+  #hasSameDocumentNavigation?: boolean;
+  #swapped?: boolean;
+
+  #navigationResponseReceived?: DeferredPromise<void>;
+
+  constructor(
+    frameManager: FrameManager,
+    frame: Frame,
+    waitUntil: PuppeteerLifeCycleEvent | PuppeteerLifeCycleEvent[],
+    timeout: number
+  ) {
+    if (Array.isArray(waitUntil)) {
+      waitUntil = waitUntil.slice();
+    } else if (typeof waitUntil === 'string') {
+      waitUntil = [waitUntil];
+    }
+    this.#initialLoaderId = frame._loaderId;
+    this.#expectedLifecycle = waitUntil.map(value => {
+      const protocolEvent = puppeteerToProtocolLifecycle.get(value);
+      assert(protocolEvent, 'Unknown value for options.waitUntil: ' + value);
+      return protocolEvent as ProtocolLifeCycleEvent;
+    });
+
+    this.#frameManager = frameManager;
+    this.#frame = frame;
+    this.#timeout = timeout;
+    this.#eventListeners = [
+      addEventListener(
+        frameManager.client,
+        CDPSessionEmittedEvents.Disconnected,
+        this.#terminate.bind(
+          this,
+          new Error('Navigation failed because browser has disconnected!')
+        )
+      ),
+      addEventListener(
+        this.#frameManager,
+        FrameManagerEmittedEvents.LifecycleEvent,
+        this.#checkLifecycleComplete.bind(this)
+      ),
+      addEventListener(
+        this.#frameManager,
+        FrameManagerEmittedEvents.FrameNavigatedWithinDocument,
+        this.#navigatedWithinDocument.bind(this)
+      ),
+      addEventListener(
+        this.#frameManager,
+        FrameManagerEmittedEvents.FrameNavigated,
+        this.#navigated.bind(this)
+      ),
+      addEventListener(
+        this.#frameManager,
+        FrameManagerEmittedEvents.FrameSwapped,
+        this.#frameSwapped.bind(this)
+      ),
+      addEventListener(
+        this.#frameManager,
+        FrameManagerEmittedEvents.FrameDetached,
+        this.#onFrameDetached.bind(this)
+      ),
+      addEventListener(
+        this.#frameManager.networkManager,
+        NetworkManagerEmittedEvents.Request,
+        this.#onRequest.bind(this)
+      ),
+      addEventListener(
+        this.#frameManager.networkManager,
+        NetworkManagerEmittedEvents.Response,
+        this.#onResponse.bind(this)
+      ),
+    ];
+
+    this.#timeoutPromise = this.#createTimeoutPromise();
+    this.#checkLifecycleComplete();
+  }
+
+  #onRequest(request: HTTPRequest): void {
+    if (request.frame() !== this.#frame || !request.isNavigationRequest()) {
+      return;
+    }
+    this.#navigationRequest = request;
+    // Resolve previous navigation response in case there are multiple
+    // navigation requests reported by the backend. This generally should not
+    // happen by it looks like it's possible.
+    this.#navigationResponseReceived?.resolve();
+    this.#navigationResponseReceived = createDeferredPromise();
+    if (request.response() !== null) {
+      this.#navigationResponseReceived?.resolve();
+    }
+  }
+
+  #onResponse(response: HTTPResponse): void {
+    if (this.#navigationRequest?._requestId !== response.request()._requestId) {
+      return;
+    }
+    this.#navigationResponseReceived?.resolve();
+  }
+
+  #onFrameDetached(frame: Frame): void {
+    if (this.#frame === frame) {
+      this.#terminationCallback.call(
+        null,
+        new Error('Navigating frame was detached')
+      );
+      return;
+    }
+    this.#checkLifecycleComplete();
+  }
+
+  async navigationResponse(): Promise<HTTPResponse | null> {
+    // Continue with a possibly null response.
+    await this.#navigationResponseReceived?.catch(() => {});
+    return this.#navigationRequest ? this.#navigationRequest.response() : null;
+  }
+
+  #terminate(error: Error): void {
+    this.#terminationCallback.call(null, error);
+  }
+
+  sameDocumentNavigationPromise(): Promise<Error | undefined> {
+    return this.#sameDocumentNavigationPromise;
+  }
+
+  newDocumentNavigationPromise(): Promise<Error | undefined> {
+    return this.#newDocumentNavigationPromise;
+  }
+
+  lifecyclePromise(): Promise<void> {
+    return this.#lifecyclePromise;
+  }
+
+  timeoutOrTerminationPromise(): Promise<Error | TimeoutError | undefined> {
+    return Promise.race([this.#timeoutPromise, this.#terminationPromise]);
+  }
+
+  async #createTimeoutPromise(): Promise<TimeoutError | undefined> {
+    if (!this.#timeout) {
+      return new Promise(noop);
+    }
+    const errorMessage =
+      'Navigation timeout of ' + this.#timeout + ' ms exceeded';
+    await new Promise(fulfill => {
+      return (this.#maximumTimer = setTimeout(fulfill, this.#timeout));
+    });
+    return new TimeoutError(errorMessage);
+  }
+
+  #navigatedWithinDocument(frame: Frame): void {
+    if (frame !== this.#frame) {
+      return;
+    }
+    this.#hasSameDocumentNavigation = true;
+    this.#checkLifecycleComplete();
+  }
+
+  #navigated(frame: Frame): void {
+    if (frame !== this.#frame) {
+      return;
+    }
+    this.#checkLifecycleComplete();
+  }
+
+  #frameSwapped(frame: Frame): void {
+    if (frame !== this.#frame) {
+      return;
+    }
+    this.#swapped = true;
+    this.#checkLifecycleComplete();
+  }
+
+  #checkLifecycleComplete(): void {
+    // We expect navigation to commit.
+    if (!checkLifecycle(this.#frame, this.#expectedLifecycle)) {
+      return;
+    }
+    this.#lifecycleCallback();
+    if (this.#hasSameDocumentNavigation) {
+      this.#sameDocumentNavigationCompleteCallback();
+    }
+    if (this.#swapped || this.#frame._loaderId !== this.#initialLoaderId) {
+      this.#newDocumentNavigationCompleteCallback();
+    }
+
+    function checkLifecycle(
+      frame: Frame,
+      expectedLifecycle: ProtocolLifeCycleEvent[]
+    ): boolean {
+      for (const event of expectedLifecycle) {
+        if (!frame._lifecycleEvents.has(event)) {
+          return false;
+        }
+      }
+      for (const child of frame.childFrames()) {
+        if (
+          child._hasStartedLoading &&
+          !checkLifecycle(child, expectedLifecycle)
+        ) {
+          return false;
+        }
+      }
+      return true;
+    }
+  }
+
+  dispose(): void {
+    removeEventListeners(this.#eventListeners);
+    this.#maximumTimer !== undefined && clearTimeout(this.#maximumTimer);
+  }
+}
diff --git a/remote/test/puppeteer/src/common/NetworkConditions.ts b/remote/test/puppeteer/src/common/NetworkConditions.ts
new file mode 100644
index 0000000000..786a732305
--- /dev/null
+++ b/remote/test/puppeteer/src/common/NetworkConditions.ts
@@ -0,0 +1,57 @@
+/**
+ * Copyright 2021 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import {NetworkConditions} from './NetworkManager.js';
+
+/**
+ * A list of network conditions to be used with
+ * `page.emulateNetworkConditions(networkConditions)`. Actual list of predefined
+ * conditions can be found in
+ * {@link https://github.com/puppeteer/puppeteer/blob/main/src/common/NetworkConditions.ts | src/common/NetworkConditions.ts}.
+ *
+ * @example
+ *
+ * ```ts
+ * const puppeteer = require('puppeteer');
+ * const slow3G = puppeteer.networkConditions['Slow 3G'];
+ *
+ * (async () => {
+ *   const browser = await puppeteer.launch();
+ *   const page = await browser.newPage();
+ *   await page.emulateNetworkConditions(slow3G);
+ *   await page.goto('https://www.google.com');
+ *   // other actions...
+ *   await browser.close();
+ * })();
+ * ```
+ *
+ * @public
+ */
+export const networkConditions: Readonly<{
+  'Slow 3G': NetworkConditions;
+  'Fast 3G': NetworkConditions;
+}> = Object.freeze({
+  'Slow 3G': {
+    download: ((500 * 1000) / 8) * 0.8,
+    upload: ((500 * 1000) / 8) * 0.8,
+    latency: 400 * 5,
+  },
+  'Fast 3G': {
+    download: ((1.6 * 1000 * 1000) / 8) * 0.9,
+    upload: ((750 * 1000) / 8) * 0.9,
+    latency: 150 * 3.75,
+  },
+});
diff --git a/remote/test/puppeteer/src/common/NetworkEventManager.ts b/remote/test/puppeteer/src/common/NetworkEventManager.ts
new file mode 100644
index 0000000000..0b0e373fc1
--- /dev/null
+++ b/remote/test/puppeteer/src/common/NetworkEventManager.ts
@@ -0,0 +1,203 @@
+import {Protocol} from 'devtools-protocol';
+import {HTTPRequest} from './HTTPRequest.js';
+
+/**
+ * @internal
+ */
+export type QueuedEventGroup = {
+  responseReceivedEvent: Protocol.Network.ResponseReceivedEvent;
+  loadingFinishedEvent?: Protocol.Network.LoadingFinishedEvent;
+  loadingFailedEvent?: Protocol.Network.LoadingFailedEvent;
+};
+
+/**
+ * @internal
+ */
+export type FetchRequestId = string;
+
+/**
+ * @internal
+ */
+export type RedirectInfo = {
+  event: Protocol.Network.RequestWillBeSentEvent;
+  fetchRequestId?: FetchRequestId;
+};
+type RedirectInfoList = RedirectInfo[];
+
+/**
+ * @internal
+ */
+export type NetworkRequestId = string;
+
+/**
+ * Helper class to track network events by request ID
+ *
+ * @internal
+ */
+export class NetworkEventManager {
+  /**
+   * There are four possible orders of events:
+   * A. `_onRequestWillBeSent`
+   * B. `_onRequestWillBeSent`, `_onRequestPaused`
+   * C. `_onRequestPaused`, `_onRequestWillBeSent`
+   * D. `_onRequestPaused`, `_onRequestWillBeSent`, `_onRequestPaused`,
+   * `_onRequestWillBeSent`, `_onRequestPaused`, `_onRequestPaused`
+   * (see crbug.com/1196004)
+   *
+   * For `_onRequest` we need the event from `_onRequestWillBeSent` and
+   * optionally the `interceptionId` from `_onRequestPaused`.
+   *
+   * If request interception is disabled, call `_onRequest` once per call to
+   * `_onRequestWillBeSent`.
+   * If request interception is enabled, call `_onRequest` once per call to
+   * `_onRequestPaused` (once per `interceptionId`).
+   *
+   * Events are stored to allow for subsequent events to call `_onRequest`.
+   *
+   * Note that (chains of) redirect requests have the same `requestId` (!) as
+   * the original request. We have to anticipate series of events like these:
+   * A. `_onRequestWillBeSent`,
+   * `_onRequestWillBeSent`, ...
+   * B. `_onRequestWillBeSent`, `_onRequestPaused`,
+   * `_onRequestWillBeSent`, `_onRequestPaused`, ...
+   * C. `_onRequestWillBeSent`, `_onRequestPaused`,
+   * `_onRequestPaused`, `_onRequestWillBeSent`, ...
+   * D. `_onRequestPaused`, `_onRequestWillBeSent`,
+   * `_onRequestPaused`, `_onRequestWillBeSent`, `_onRequestPaused`,
+   * `_onRequestWillBeSent`, `_onRequestPaused`, `_onRequestPaused`, ...
+   * (see crbug.com/1196004)
+   */
+  #requestWillBeSentMap = new Map<
+    NetworkRequestId,
+    Protocol.Network.RequestWillBeSentEvent
+  >();
+  #requestPausedMap = new Map<
+    NetworkRequestId,
+    Protocol.Fetch.RequestPausedEvent
+  >();
+  #httpRequestsMap = new Map<NetworkRequestId, HTTPRequest>();
+
+  /*
+   * The below maps are used to reconcile Network.responseReceivedExtraInfo
+   * events with their corresponding request. Each response and redirect
+   * response gets an ExtraInfo event, and we don't know which will come first.
+   * This means that we have to store a Response or an ExtraInfo for each
+   * response, and emit the event when we get both of them. In addition, to
+   * handle redirects, we have to make them Arrays to represent the chain of
+   * events.
+   */
+  #responseReceivedExtraInfoMap = new Map<
+    NetworkRequestId,
+    Protocol.Network.ResponseReceivedExtraInfoEvent[]
+  >();
+  #queuedRedirectInfoMap = new Map<NetworkRequestId, RedirectInfoList>();
+  #queuedEventGroupMap = new Map<NetworkRequestId, QueuedEventGroup>();
+
+  forget(networkRequestId: NetworkRequestId): void {
+    this.#requestWillBeSentMap.delete(networkRequestId);
+    this.#requestPausedMap.delete(networkRequestId);
+    this.#queuedEventGroupMap.delete(networkRequestId);
+    this.#queuedRedirectInfoMap.delete(networkRequestId);
+    this.#responseReceivedExtraInfoMap.delete(networkRequestId);
+  }
+
+  responseExtraInfo(
+    networkRequestId: NetworkRequestId
+  ): Protocol.Network.ResponseReceivedExtraInfoEvent[] {
+    if (!this.#responseReceivedExtraInfoMap.has(networkRequestId)) {
+      this.#responseReceivedExtraInfoMap.set(networkRequestId, []);
+    }
+    return this.#responseReceivedExtraInfoMap.get(
+      networkRequestId
+    ) as Protocol.Network.ResponseReceivedExtraInfoEvent[];
+  }
+
+  private queuedRedirectInfo(fetchRequestId: FetchRequestId): RedirectInfoList {
+    if (!this.#queuedRedirectInfoMap.has(fetchRequestId)) {
+      this.#queuedRedirectInfoMap.set(fetchRequestId, []);
+    }
+    return this.#queuedRedirectInfoMap.get(fetchRequestId) as RedirectInfoList;
+  }
+
+  queueRedirectInfo(
+    fetchRequestId: FetchRequestId,
+    redirectInfo: RedirectInfo
+  ): void {
+    this.queuedRedirectInfo(fetchRequestId).push(redirectInfo);
+  }
+
+  takeQueuedRedirectInfo(
+    fetchRequestId: FetchRequestId
+  ): RedirectInfo | undefined {
+    return this.queuedRedirectInfo(fetchRequestId).shift();
+  }
+
+  numRequestsInProgress(): number {
+    return [...this.#httpRequestsMap].filter(([, request]) => {
+      return !request.response();
+    }).length;
+  }
+
+  storeRequestWillBeSent(
+    networkRequestId: NetworkRequestId,
+    event: Protocol.Network.RequestWillBeSentEvent
+  ): void {
+    this.#requestWillBeSentMap.set(networkRequestId, event);
+  }
+
+  getRequestWillBeSent(
+    networkRequestId: NetworkRequestId
+  ): Protocol.Network.RequestWillBeSentEvent | undefined {
+    return this.#requestWillBeSentMap.get(networkRequestId);
+  }
+
+  forgetRequestWillBeSent(networkRequestId: NetworkRequestId): void {
+    this.#requestWillBeSentMap.delete(networkRequestId);
+  }
+
+  getRequestPaused(
+    networkRequestId: NetworkRequestId
+  ): Protocol.Fetch.RequestPausedEvent | undefined {
+    return this.#requestPausedMap.get(networkRequestId);
+  }
+
+  forgetRequestPaused(networkRequestId: NetworkRequestId): void {
+    this.#requestPausedMap.delete(networkRequestId);
+  }
+
+  storeRequestPaused(
+    networkRequestId: NetworkRequestId,
+    event: Protocol.Fetch.RequestPausedEvent
+  ): void {
+    this.#requestPausedMap.set(networkRequestId, event);
+  }
+
+  getRequest(networkRequestId: NetworkRequestId): HTTPRequest | undefined {
+    return this.#httpRequestsMap.get(networkRequestId);
+  }
+
+  storeRequest(networkRequestId: NetworkRequestId, request: HTTPRequest): void {
+    this.#httpRequestsMap.set(networkRequestId, request);
+  }
+
+  forgetRequest(networkRequestId: NetworkRequestId): void {
+    this.#httpRequestsMap.delete(networkRequestId);
+  }
+
+  getQueuedEventGroup(
+    networkRequestId: NetworkRequestId
+  ): QueuedEventGroup | undefined {
+    return this.#queuedEventGroupMap.get(networkRequestId);
+  }
+
+  queueEventGroup(
+    networkRequestId: NetworkRequestId,
+    event: QueuedEventGroup
+  ): void {
+    this.#queuedEventGroupMap.set(networkRequestId, event);
+  }
+
+  forgetQueuedEventGroup(networkRequestId: NetworkRequestId): void {
+    this.#queuedEventGroupMap.delete(networkRequestId);
+  }
+}
diff --git a/remote/test/puppeteer/src/common/NetworkManager.ts b/remote/test/puppeteer/src/common/NetworkManager.ts
new file mode 100644
index 0000000000..da1a0d19f1
--- /dev/null
+++ b/remote/test/puppeteer/src/common/NetworkManager.ts
@@ -0,0 +1,636 @@
+/**
+ * Copyright 2017 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import {Protocol} from 'devtools-protocol';
+import {ProtocolMapping} from 'devtools-protocol/types/protocol-mapping.js';
+import {assert} from '../util/assert.js';
+import {EventEmitter} from './EventEmitter.js';
+import {Frame} from './Frame.js';
+import {HTTPRequest} from './HTTPRequest.js';
+import {HTTPResponse} from './HTTPResponse.js';
+import {FetchRequestId, NetworkEventManager} from './NetworkEventManager.js';
+import {debugError, isString} from './util.js';
+import {DeferredPromise} from '../util/DeferredPromise.js';
+import {createDebuggableDeferredPromise} from '../util/DebuggableDeferredPromise.js';
+
+/**
+ * @public
+ */
+export interface Credentials {
+  username: string;
+  password: string;
+}
+
+/**
+ * @public
+ */
+export interface NetworkConditions {
+  // Download speed (bytes/s)
+  download: number;
+  // Upload speed (bytes/s)
+  upload: number;
+  // Latency (ms)
+  latency: number;
+}
+/**
+ * @public
+ */
+export interface InternalNetworkConditions extends NetworkConditions {
+  offline: boolean;
+}
+
+/**
+ * We use symbols to prevent any external parties listening to these events.
+ * They are internal to Puppeteer.
+ *
+ * @internal
+ */
+export const NetworkManagerEmittedEvents = {
+  Request: Symbol('NetworkManager.Request'),
+  RequestServedFromCache: Symbol('NetworkManager.RequestServedFromCache'),
+  Response: Symbol('NetworkManager.Response'),
+  RequestFailed: Symbol('NetworkManager.RequestFailed'),
+  RequestFinished: Symbol('NetworkManager.RequestFinished'),
+} as const;
+
+interface CDPSession extends EventEmitter {
+  send<T extends keyof ProtocolMapping.Commands>(
+    method: T,
+    ...paramArgs: ProtocolMapping.Commands[T]['paramsType']
+  ): Promise<ProtocolMapping.Commands[T]['returnType']>;
+}
+
+interface FrameManager {
+  frame(frameId: string): Frame | null;
+}
+
+/**
+ * @internal
+ */
+export class NetworkManager extends EventEmitter {
+  #client: CDPSession;
+  #ignoreHTTPSErrors: boolean;
+  #frameManager: FrameManager;
+  #networkEventManager = new NetworkEventManager();
+  #extraHTTPHeaders: Record<string, string> = {};
+  #credentials?: Credentials;
+  #attemptedAuthentications = new Set<string>();
+  #userRequestInterceptionEnabled = false;
+  #protocolRequestInterceptionEnabled = false;
+  #userCacheDisabled = false;
+  #emulatedNetworkConditions: InternalNetworkConditions = {
+    offline: false,
+    upload: -1,
+    download: -1,
+    latency: 0,
+  };
+  #deferredInitPromise?: DeferredPromise<void>;
+
+  constructor(
+    client: CDPSession,
+    ignoreHTTPSErrors: boolean,
+    frameManager: FrameManager
+  ) {
+    super();
+    this.#client = client;
+    this.#ignoreHTTPSErrors = ignoreHTTPSErrors;
+    this.#frameManager = frameManager;
+
+    this.#client.on('Fetch.requestPaused', this.#onRequestPaused.bind(this));
+    this.#client.on('Fetch.authRequired', this.#onAuthRequired.bind(this));
+    this.#client.on(
+      'Network.requestWillBeSent',
+      this.#onRequestWillBeSent.bind(this)
+    );
+    this.#client.on(
+      'Network.requestServedFromCache',
+      this.#onRequestServedFromCache.bind(this)
+    );
+    this.#client.on(
+      'Network.responseReceived',
+      this.#onResponseReceived.bind(this)
+    );
+    this.#client.on(
+      'Network.loadingFinished',
+      this.#onLoadingFinished.bind(this)
+    );
+    this.#client.on('Network.loadingFailed', this.#onLoadingFailed.bind(this));
+    this.#client.on(
+      'Network.responseReceivedExtraInfo',
+      this.#onResponseReceivedExtraInfo.bind(this)
+    );
+  }
+
+  /**
+   * Initialize calls should avoid async dependencies between CDP calls as those
+   * might not resolve until after the target is resumed causing a deadlock.
+   */
+  initialize(): Promise<void> {
+    if (this.#deferredInitPromise) {
+      return this.#deferredInitPromise;
+    }
+    this.#deferredInitPromise = createDebuggableDeferredPromise(
+      'NetworkManager initialization timed out'
+    );
+    const init = Promise.all([
+      this.#ignoreHTTPSErrors
+        ? this.#client.send('Security.setIgnoreCertificateErrors', {
+            ignore: true,
+          })
+        : null,
+      this.#client.send('Network.enable'),
+    ]);
+    const deferredInitPromise = this.#deferredInitPromise;
+    init
+      .then(() => {
+        deferredInitPromise.resolve();
+      })
+      .catch(err => {
+        deferredInitPromise.reject(err);
+      });
+    return this.#deferredInitPromise;
+  }
+
+  async authenticate(credentials?: Credentials): Promise<void> {
+    this.#credentials = credentials;
+    await this.#updateProtocolRequestInterception();
+  }
+
+  async setExtraHTTPHeaders(
+    extraHTTPHeaders: Record<string, string>
+  ): Promise<void> {
+    this.#extraHTTPHeaders = {};
+    for (const key of Object.keys(extraHTTPHeaders)) {
+      const value = extraHTTPHeaders[key];
+      assert(
+        isString(value),
+        `Expected value of header "${key}" to be String, but "${typeof value}" is found.`
+      );
+      this.#extraHTTPHeaders[key.toLowerCase()] = value;
+    }
+    await this.#client.send('Network.setExtraHTTPHeaders', {
+      headers: this.#extraHTTPHeaders,
+    });
+  }
+
+  extraHTTPHeaders(): Record<string, string> {
+    return Object.assign({}, this.#extraHTTPHeaders);
+  }
+
+  numRequestsInProgress(): number {
+    return this.#networkEventManager.numRequestsInProgress();
+  }
+
+  async setOfflineMode(value: boolean): Promise<void> {
+    this.#emulatedNetworkConditions.offline = value;
+    await this.#updateNetworkConditions();
+  }
+
+  async emulateNetworkConditions(
+    networkConditions: NetworkConditions | null
+  ): Promise<void> {
+    this.#emulatedNetworkConditions.upload = networkConditions
+      ? networkConditions.upload
+      : -1;
+    this.#emulatedNetworkConditions.download = networkConditions
+      ? networkConditions.download
+      : -1;
+    this.#emulatedNetworkConditions.latency = networkConditions
+      ? networkConditions.latency
+      : 0;
+
+    await this.#updateNetworkConditions();
+  }
+
+  async #updateNetworkConditions(): Promise<void> {
+    await this.#client.send('Network.emulateNetworkConditions', {
+      offline: this.#emulatedNetworkConditions.offline,
+      latency: this.#emulatedNetworkConditions.latency,
+      uploadThroughput: this.#emulatedNetworkConditions.upload,
+      downloadThroughput: this.#emulatedNetworkConditions.download,
+    });
+  }
+
+  async setUserAgent(
+    userAgent: string,
+    userAgentMetadata?: Protocol.Emulation.UserAgentMetadata
+  ): Promise<void> {
+    await this.#client.send('Network.setUserAgentOverride', {
+      userAgent: userAgent,
+      userAgentMetadata: userAgentMetadata,
+    });
+  }
+
+  async setCacheEnabled(enabled: boolean): Promise<void> {
+    this.#userCacheDisabled = !enabled;
+    await this.#updateProtocolCacheDisabled();
+  }
+
+  async setRequestInterception(value: boolean): Promise<void> {
+    this.#userRequestInterceptionEnabled = value;
+    await this.#updateProtocolRequestInterception();
+  }
+
+  async #updateProtocolRequestInterception(): Promise<void> {
+    const enabled = this.#userRequestInterceptionEnabled || !!this.#credentials;
+    if (enabled === this.#protocolRequestInterceptionEnabled) {
+      return;
+    }
+    this.#protocolRequestInterceptionEnabled = enabled;
+    if (enabled) {
+      await Promise.all([
+        this.#updateProtocolCacheDisabled(),
+        this.#client.send('Fetch.enable', {
+          handleAuthRequests: true,
+          patterns: [{urlPattern: '*'}],
+        }),
+      ]);
+    } else {
+      await Promise.all([
+        this.#updateProtocolCacheDisabled(),
+        this.#client.send('Fetch.disable'),
+      ]);
+    }
+  }
+
+  #cacheDisabled(): boolean {
+    return this.#userCacheDisabled;
+  }
+
+  async #updateProtocolCacheDisabled(): Promise<void> {
+    await this.#client.send('Network.setCacheDisabled', {
+      cacheDisabled: this.#cacheDisabled(),
+    });
+  }
+
+  #onRequestWillBeSent(event: Protocol.Network.RequestWillBeSentEvent): void {
+    // Request interception doesn't happen for data URLs with Network Service.
+    if (
+      this.#userRequestInterceptionEnabled &&
+      !event.request.url.startsWith('data:')
+    ) {
+      const {requestId: networkRequestId} = event;
+
+      this.#networkEventManager.storeRequestWillBeSent(networkRequestId, event);
+
+      /**
+       * CDP may have sent a Fetch.requestPaused event already. Check for it.
+       */
+      const requestPausedEvent =
+        this.#networkEventManager.getRequestPaused(networkRequestId);
+      if (requestPausedEvent) {
+        const {requestId: fetchRequestId} = requestPausedEvent;
+        this.#patchRequestEventHeaders(event, requestPausedEvent);
+        this.#onRequest(event, fetchRequestId);
+        this.#networkEventManager.forgetRequestPaused(networkRequestId);
+      }
+
+      return;
+    }
+    this.#onRequest(event, undefined);
+  }
+
+  #onAuthRequired(event: Protocol.Fetch.AuthRequiredEvent): void {
+    /* TODO(jacktfranklin): This is defined in protocol.d.ts but not
+     * in an easily referrable way - we should look at exposing it.
+     */
+    type AuthResponse = 'Default' | 'CancelAuth' | 'ProvideCredentials';
+    let response: AuthResponse = 'Default';
+    if (this.#attemptedAuthentications.has(event.requestId)) {
+      response = 'CancelAuth';
+    } else if (this.#credentials) {
+      response = 'ProvideCredentials';
+      this.#attemptedAuthentications.add(event.requestId);
+    }
+    const {username, password} = this.#credentials || {
+      username: undefined,
+      password: undefined,
+    };
+    this.#client
+      .send('Fetch.continueWithAuth', {
+        requestId: event.requestId,
+        authChallengeResponse: {response, username, password},
+      })
+      .catch(debugError);
+  }
+
+  /**
+   * CDP may send a Fetch.requestPaused without or before a
+   * Network.requestWillBeSent
+   *
+   * CDP may send multiple Fetch.requestPaused
+   * for the same Network.requestWillBeSent.
+   */
+  #onRequestPaused(event: Protocol.Fetch.RequestPausedEvent): void {
+    if (
+      !this.#userRequestInterceptionEnabled &&
+      this.#protocolRequestInterceptionEnabled
+    ) {
+      this.#client
+        .send('Fetch.continueRequest', {
+          requestId: event.requestId,
+        })
+        .catch(debugError);
+    }
+
+    const {networkId: networkRequestId, requestId: fetchRequestId} = event;
+
+    if (!networkRequestId) {
+      return;
+    }
+
+    const requestWillBeSentEvent = (() => {
+      const requestWillBeSentEvent =
+        this.#networkEventManager.getRequestWillBeSent(networkRequestId);
+
+      // redirect requests have the same `requestId`,
+      if (
+        requestWillBeSentEvent &&
+        (requestWillBeSentEvent.request.url !== event.request.url ||
+          requestWillBeSentEvent.request.method !== event.request.method)
+      ) {
+        this.#networkEventManager.forgetRequestWillBeSent(networkRequestId);
+        return;
+      }
+      return requestWillBeSentEvent;
+    })();
+
+    if (requestWillBeSentEvent) {
+      this.#patchRequestEventHeaders(requestWillBeSentEvent, event);
+      this.#onRequest(requestWillBeSentEvent, fetchRequestId);
+    } else {
+      this.#networkEventManager.storeRequestPaused(networkRequestId, event);
+    }
+  }
+
+  #patchRequestEventHeaders(
+    requestWillBeSentEvent: Protocol.Network.RequestWillBeSentEvent,
+    requestPausedEvent: Protocol.Fetch.RequestPausedEvent
+  ): void {
+    requestWillBeSentEvent.request.headers = {
+      ...requestWillBeSentEvent.request.headers,
+      // includes extra headers, like: Accept, Origin
+      ...requestPausedEvent.request.headers,
+    };
+  }
+
+  #onRequest(
+    event: Protocol.Network.RequestWillBeSentEvent,
+    fetchRequestId?: FetchRequestId
+  ): void {
+    let redirectChain: HTTPRequest[] = [];
+    if (event.redirectResponse) {
+      // We want to emit a response and requestfinished for the
+      // redirectResponse, but we can't do so unless we have a
+      // responseExtraInfo ready to pair it up with. If we don't have any
+      // responseExtraInfos saved in our queue, they we have to wait until
+      // the next one to emit response and requestfinished, *and* we should
+      // also wait to emit this Request too because it should come after the
+      // response/requestfinished.
+      let redirectResponseExtraInfo = null;
+      if (event.redirectHasExtraInfo) {
+        redirectResponseExtraInfo = this.#networkEventManager
+          .responseExtraInfo(event.requestId)
+          .shift();
+        if (!redirectResponseExtraInfo) {
+          this.#networkEventManager.queueRedirectInfo(event.requestId, {
+            event,
+            fetchRequestId,
+          });
+          return;
+        }
+      }
+
+      const request = this.#networkEventManager.getRequest(event.requestId);
+      // If we connect late to the target, we could have missed the
+      // requestWillBeSent event.
+      if (request) {
+        this.#handleRequestRedirect(
+          request,
+          event.redirectResponse,
+          redirectResponseExtraInfo
+        );
+        redirectChain = request._redirectChain;
+      }
+    }
+    const frame = event.frameId
+      ? this.#frameManager.frame(event.frameId)
+      : null;
+
+    const request = new HTTPRequest(
+      this.#client,
+      frame,
+      fetchRequestId,
+      this.#userRequestInterceptionEnabled,
+      event,
+      redirectChain
+    );
+    this.#networkEventManager.storeRequest(event.requestId, request);
+    this.emit(NetworkManagerEmittedEvents.Request, request);
+    request.finalizeInterceptions();
+  }
+
+  #onRequestServedFromCache(
+    event: Protocol.Network.RequestServedFromCacheEvent
+  ): void {
+    const request = this.#networkEventManager.getRequest(event.requestId);
+    if (request) {
+      request._fromMemoryCache = true;
+    }
+    this.emit(NetworkManagerEmittedEvents.RequestServedFromCache, request);
+  }
+
+  #handleRequestRedirect(
+    request: HTTPRequest,
+    responsePayload: Protocol.Network.Response,
+    extraInfo: Protocol.Network.ResponseReceivedExtraInfoEvent | null
+  ): void {
+    const response = new HTTPResponse(
+      this.#client,
+      request,
+      responsePayload,
+      extraInfo
+    );
+    request._response = response;
+    request._redirectChain.push(request);
+    response._resolveBody(
+      new Error('Response body is unavailable for redirect responses')
+    );
+    this.#forgetRequest(request, false);
+    this.emit(NetworkManagerEmittedEvents.Response, response);
+    this.emit(NetworkManagerEmittedEvents.RequestFinished, request);
+  }
+
+  #emitResponseEvent(
+    responseReceived: Protocol.Network.ResponseReceivedEvent,
+    extraInfo: Protocol.Network.ResponseReceivedExtraInfoEvent | null
+  ): void {
+    const request = this.#networkEventManager.getRequest(
+      responseReceived.requestId
+    );
+    // FileUpload sends a response without a matching request.
+    if (!request) {
+      return;
+    }
+
+    const extraInfos = this.#networkEventManager.responseExtraInfo(
+      responseReceived.requestId
+    );
+    if (extraInfos.length) {
+      debugError(
+        new Error(
+          'Unexpected extraInfo events for request ' +
+            responseReceived.requestId
+        )
+      );
+    }
+
+    const response = new HTTPResponse(
+      this.#client,
+      request,
+      responseReceived.response,
+      extraInfo
+    );
+    request._response = response;
+    this.emit(NetworkManagerEmittedEvents.Response, response);
+  }
+
+  #onResponseReceived(event: Protocol.Network.ResponseReceivedEvent): void {
+    const request = this.#networkEventManager.getRequest(event.requestId);
+    let extraInfo = null;
+    if (request && !request._fromMemoryCache && event.hasExtraInfo) {
+      extraInfo = this.#networkEventManager
+        .responseExtraInfo(event.requestId)
+        .shift();
+      if (!extraInfo) {
+        // Wait until we get the corresponding ExtraInfo event.
+        this.#networkEventManager.queueEventGroup(event.requestId, {
+          responseReceivedEvent: event,
+        });
+        return;
+      }
+    }
+    this.#emitResponseEvent(event, extraInfo);
+  }
+
+  #onResponseReceivedExtraInfo(
+    event: Protocol.Network.ResponseReceivedExtraInfoEvent
+  ): void {
+    // We may have skipped a redirect response/request pair due to waiting for
+    // this ExtraInfo event. If so, continue that work now that we have the
+    // request.
+    const redirectInfo = this.#networkEventManager.takeQueuedRedirectInfo(
+      event.requestId
+    );
+    if (redirectInfo) {
+      this.#networkEventManager.responseExtraInfo(event.requestId).push(event);
+      this.#onRequest(redirectInfo.event, redirectInfo.fetchRequestId);
+      return;
+    }
+
+    // We may have skipped response and loading events because we didn't have
+    // this ExtraInfo event yet. If so, emit those events now.
+    const queuedEvents = this.#networkEventManager.getQueuedEventGroup(
+      event.requestId
+    );
+    if (queuedEvents) {
+      this.#networkEventManager.forgetQueuedEventGroup(event.requestId);
+      this.#emitResponseEvent(queuedEvents.responseReceivedEvent, event);
+      if (queuedEvents.loadingFinishedEvent) {
+        this.#emitLoadingFinished(queuedEvents.loadingFinishedEvent);
+      }
+      if (queuedEvents.loadingFailedEvent) {
+        this.#emitLoadingFailed(queuedEvents.loadingFailedEvent);
+      }
+      return;
+    }
+
+    // Wait until we get another event that can use this ExtraInfo event.
+    this.#networkEventManager.responseExtraInfo(event.requestId).push(event);
+  }
+
+  #forgetRequest(request: HTTPRequest, events: boolean): void {
+    const requestId = request._requestId;
+    const interceptionId = request._interceptionId;
+
+    this.#networkEventManager.forgetRequest(requestId);
+    interceptionId !== undefined &&
+      this.#attemptedAuthentications.delete(interceptionId);
+
+    if (events) {
+      this.#networkEventManager.forget(requestId);
+    }
+  }
+
+  #onLoadingFinished(event: Protocol.Network.LoadingFinishedEvent): void {
+    // If the response event for this request is still waiting on a
+    // corresponding ExtraInfo event, then wait to emit this event too.
+    const queuedEvents = this.#networkEventManager.getQueuedEventGroup(
+      event.requestId
+    );
+    if (queuedEvents) {
+      queuedEvents.loadingFinishedEvent = event;
+    } else {
+      this.#emitLoadingFinished(event);
+    }
+  }
+
+  #emitLoadingFinished(event: Protocol.Network.LoadingFinishedEvent): void {
+    const request = this.#networkEventManager.getRequest(event.requestId);
+    // For certain requestIds we never receive requestWillBeSent event.
+    // @see https://crbug.com/750469
+    if (!request) {
+      return;
+    }
+
+    // Under certain conditions we never get the Network.responseReceived
+    // event from protocol. @see https://crbug.com/883475
+    if (request.response()) {
+      request.response()?._resolveBody(null);
+    }
+    this.#forgetRequest(request, true);
+    this.emit(NetworkManagerEmittedEvents.RequestFinished, request);
+  }
+
+  #onLoadingFailed(event: Protocol.Network.LoadingFailedEvent): void {
+    // If the response event for this request is still waiting on a
+    // corresponding ExtraInfo event, then wait to emit this event too.
+    const queuedEvents = this.#networkEventManager.getQueuedEventGroup(
+      event.requestId
+    );
+    if (queuedEvents) {
+      queuedEvents.loadingFailedEvent = event;
+    } else {
+      this.#emitLoadingFailed(event);
+    }
+  }
+
+  #emitLoadingFailed(event: Protocol.Network.LoadingFailedEvent): void {
+    const request = this.#networkEventManager.getRequest(event.requestId);
+    // For certain requestIds we never receive requestWillBeSent event.
+    // @see https://crbug.com/750469
+    if (!request) {
+      return;
+    }
+    request._failureText = event.errorText;
+    const response = request.response();
+    if (response) {
+      response._resolveBody(null);
+    }
+    this.#forgetRequest(request, true);
+    this.emit(NetworkManagerEmittedEvents.RequestFailed, request);
+  }
+}
diff --git a/remote/test/puppeteer/src/common/PDFOptions.ts b/remote/test/puppeteer/src/common/PDFOptions.ts
new file mode 100644
index 0000000000..2613b4273f
--- /dev/null
+++ b/remote/test/puppeteer/src/common/PDFOptions.ts
@@ -0,0 +1,202 @@
+/**
+ * Copyright 2020 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * @public
+ */
+export interface PDFMargin {
+  top?: string | number;
+  bottom?: string | number;
+  left?: string | number;
+  right?: string | number;
+}
+
+/**
+ * @public
+ */
+export type LowerCasePaperFormat =
+  | 'letter'
+  | 'legal'
+  | 'tabloid'
+  | 'ledger'
+  | 'a0'
+  | 'a1'
+  | 'a2'
+  | 'a3'
+  | 'a4'
+  | 'a5'
+  | 'a6';
+
+/**
+ * All the valid paper format types when printing a PDF.
+ *
+ * @remarks
+ *
+ * The sizes of each format are as follows:
+ *
+ * - `Letter`: 8.5in x 11in
+ *
+ * - `Legal`: 8.5in x 14in
+ *
+ * - `Tabloid`: 11in x 17in
+ *
+ * - `Ledger`: 17in x 11in
+ *
+ * - `A0`: 33.1in x 46.8in
+ *
+ * - `A1`: 23.4in x 33.1in
+ *
+ * - `A2`: 16.54in x 23.4in
+ *
+ * - `A3`: 11.7in x 16.54in
+ *
+ * - `A4`: 8.27in x 11.7in
+ *
+ * - `A5`: 5.83in x 8.27in
+ *
+ * - `A6`: 4.13in x 5.83in
+ *
+ * @public
+ */
+export type PaperFormat =
+  | Uppercase<LowerCasePaperFormat>
+  | Capitalize<LowerCasePaperFormat>
+  | LowerCasePaperFormat;
+
+/**
+ * Valid options to configure PDF generation via {@link Page.pdf}.
+ * @public
+ */
+export interface PDFOptions {
+  /**
+   * Scales the rendering of the web page. Amount must be between `0.1` and `2`.
+   * @defaultValue 1
+   */
+  scale?: number;
+  /**
+   * Whether to show the header and footer.
+   * @defaultValue false
+   */
+  displayHeaderFooter?: boolean;
+  /**
+   * HTML template for the print header. Should be valid HTML with the following
+   * classes used to inject values into them:
+   *
+   * - `date` formatted print date
+   *
+   * - `title` document title
+   *
+   * - `url` document location
+   *
+   * - `pageNumber` current page number
+   *
+   * - `totalPages` total pages in the document
+   */
+  headerTemplate?: string;
+  /**
+   * HTML template for the print footer. Has the same constraints and support
+   * for special classes as {@link PDFOptions.headerTemplate}.
+   */
+  footerTemplate?: string;
+  /**
+   * Set to `true` to print background graphics.
+   * @defaultValue false
+   */
+  printBackground?: boolean;
+  /**
+   * Whether to print in landscape orientation.
+   * @defaultValue = false
+   */
+  landscape?: boolean;
+  /**
+   * Paper ranges to print, e.g. `1-5, 8, 11-13`.
+   * @defaultValue The empty string, which means all pages are printed.
+   */
+  pageRanges?: string;
+  /**
+   * @remarks
+   * If set, this takes priority over the `width` and `height` options.
+   * @defaultValue `letter`.
+   */
+  format?: PaperFormat;
+  /**
+   * Sets the width of paper. You can pass in a number or a string with a unit.
+   */
+  width?: string | number;
+  /**
+   * Sets the height of paper. You can pass in a number or a string with a unit.
+   */
+  height?: string | number;
+  /**
+   * Give any CSS `@page` size declared in the page priority over what is
+   * declared in the `width` or `height` or `format` option.
+   * @defaultValue `false`, which will scale the content to fit the paper size.
+   */
+  preferCSSPageSize?: boolean;
+  /**
+   * Set the PDF margins.
+   * @defaultValue no margins are set.
+   */
+  margin?: PDFMargin;
+  /**
+   * The path to save the file to.
+   *
+   * @remarks
+   *
+   * If the path is relative, it's resolved relative to the current working directory.
+   *
+   * @defaultValue the empty string, which means the PDF will not be written to disk.
+   */
+  path?: string;
+  /**
+   * Hides default white background and allows generating pdfs with transparency.
+   * @defaultValue false
+   */
+  omitBackground?: boolean;
+  /**
+   * Timeout in milliseconds
+   * @defaultValue 30000
+   */
+  timeout?: number;
+}
+
+/**
+ * @internal
+ */
+export interface PaperFormatDimensions {
+  width: number;
+  height: number;
+}
+
+/**
+ * @internal
+ */
+export const _paperFormats: Record<
+  LowerCasePaperFormat,
+  PaperFormatDimensions
+> = {
+  letter: {width: 8.5, height: 11},
+  legal: {width: 8.5, height: 14},
+  tabloid: {width: 11, height: 17},
+  ledger: {width: 17, height: 11},
+  a0: {width: 33.1, height: 46.8},
+  a1: {width: 23.4, height: 33.1},
+  a2: {width: 16.54, height: 23.4},
+  a3: {width: 11.7, height: 16.54},
+  a4: {width: 8.27, height: 11.7},
+  a5: {width: 5.83, height: 8.27},
+  a6: {width: 4.13, height: 5.83},
+} as const;
diff --git a/remote/test/puppeteer/src/common/Page.ts b/remote/test/puppeteer/src/common/Page.ts
new file mode 100644
index 0000000000..ab3a2a2c82
--- /dev/null
+++ b/remote/test/puppeteer/src/common/Page.ts
@@ -0,0 +1,3633 @@
+/**
+ * Copyright 2017 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import {Protocol} from 'devtools-protocol';
+import type {Readable} from 'stream';
+import {assert} from '../util/assert.js';
+import {
+  createDeferredPromise,
+  DeferredPromise,
+} from '../util/DeferredPromise.js';
+import {isErrorLike} from '../util/ErrorLike.js';
+import {Accessibility} from './Accessibility.js';
+import {Browser, BrowserContext} from './Browser.js';
+import {CDPSession, CDPSessionEmittedEvents} from './Connection.js';
+import {ConsoleMessage, ConsoleMessageType} from './ConsoleMessage.js';
+import {Coverage} from './Coverage.js';
+import {Dialog} from './Dialog.js';
+import {ElementHandle} from './ElementHandle.js';
+import {EmulationManager} from './EmulationManager.js';
+import {EventEmitter, Handler} from './EventEmitter.js';
+import {FileChooser} from './FileChooser.js';
+import {
+  Frame,
+  FrameAddScriptTagOptions,
+  FrameAddStyleTagOptions,
+} from './Frame.js';
+import {FrameManager, FrameManagerEmittedEvents} from './FrameManager.js';
+import {HTTPRequest} from './HTTPRequest.js';
+import {HTTPResponse} from './HTTPResponse.js';
+import {Keyboard, Mouse, MouseButton, Touchscreen} from './Input.js';
+import {MAIN_WORLD, WaitForSelectorOptions} from './IsolatedWorld.js';
+import {JSHandle} from './JSHandle.js';
+import {PuppeteerLifeCycleEvent} from './LifecycleWatcher.js';
+import {
+  Credentials,
+  NetworkConditions,
+  NetworkManagerEmittedEvents,
+} from './NetworkManager.js';
+import {LowerCasePaperFormat, PDFOptions, _paperFormats} from './PDFOptions.js';
+import {Viewport} from './PuppeteerViewport.js';
+import {Target} from './Target.js';
+import {TargetManagerEmittedEvents} from './TargetManager.js';
+import {TaskQueue} from './TaskQueue.js';
+import {TimeoutSettings} from './TimeoutSettings.js';
+import {Tracing} from './Tracing.js';
+import {EvaluateFunc, HandleFor, NodeFor} from './types.js';
+import {
+  createJSHandle,
+  debugError,
+  evaluationString,
+  getExceptionMessage,
+  getReadableAsBuffer,
+  getReadableFromProtocolStream,
+  importFS,
+  isNumber,
+  isString,
+  pageBindingDeliverErrorString,
+  pageBindingDeliverErrorValueString,
+  pageBindingDeliverResultString,
+  pageBindingInitString,
+  releaseObject,
+  valueFromRemoteObject,
+  waitForEvent,
+  waitWithTimeout,
+} from './util.js';
+import {WebWorker} from './WebWorker.js';
+
+/**
+ * @public
+ */
+export interface Metrics {
+  Timestamp?: number;
+  Documents?: number;
+  Frames?: number;
+  JSEventListeners?: number;
+  Nodes?: number;
+  LayoutCount?: number;
+  RecalcStyleCount?: number;
+  LayoutDuration?: number;
+  RecalcStyleDuration?: number;
+  ScriptDuration?: number;
+  TaskDuration?: number;
+  JSHeapUsedSize?: number;
+  JSHeapTotalSize?: number;
+}
+
+/**
+ * @public
+ */
+export interface WaitTimeoutOptions {
+  /**
+   * Maximum wait time in milliseconds. Pass 0 to disable the timeout.
+   *
+   * The default value can be changed by using the
+   * {@link Page.setDefaultTimeout} method.
+   *
+   * @defaultValue `30000`
+   */
+  timeout?: number;
+}
+
+/**
+ * @public
+ */
+export interface WaitForOptions {
+  /**
+   * Maximum wait time in milliseconds. Pass 0 to disable the timeout.
+   *
+   * The default value can be changed by using the
+   * {@link Page.setDefaultTimeout} or {@link Page.setDefaultNavigationTimeout}
+   * methods.
+   *
+   * @defaultValue `30000`
+   */
+  timeout?: number;
+  waitUntil?: PuppeteerLifeCycleEvent | PuppeteerLifeCycleEvent[];
+}
+
+/**
+ * @public
+ */
+export interface GeolocationOptions {
+  /**
+   * Latitude between `-90` and `90`.
+   */
+  longitude: number;
+  /**
+   * Longitude between `-180` and `180`.
+   */
+  latitude: number;
+  /**
+   * Optional non-negative accuracy value.
+   */
+  accuracy?: number;
+}
+
+/**
+ * @public
+ */
+export interface MediaFeature {
+  name: string;
+  value: string;
+}
+
+/**
+ * @public
+ */
+export interface ScreenshotClip {
+  x: number;
+  y: number;
+  width: number;
+  height: number;
+  /**
+   * @defaultValue 1
+   */
+  scale?: number;
+}
+
+/**
+ * @public
+ */
+export interface ScreenshotOptions {
+  /**
+   * @defaultValue `png`
+   */
+  type?: 'png' | 'jpeg' | 'webp';
+  /**
+   * The file path to save the image to. The screenshot type will be inferred
+   * from file extension. If path is a relative path, then it is resolved
+   * relative to current working directory. If no path is provided, the image
+   * won't be saved to the disk.
+   */
+  path?: string;
+  /**
+   * When `true`, takes a screenshot of the full page.
+   * @defaultValue `false`
+   */
+  fullPage?: boolean;
+  /**
+   * An object which specifies the clipping region of the page.
+   */
+  clip?: ScreenshotClip;
+  /**
+   * Quality of the image, between 0-100. Not applicable to `png` images.
+   */
+  quality?: number;
+  /**
+   * Hides default white background and allows capturing screenshots with transparency.
+   * @defaultValue `false`
+   */
+  omitBackground?: boolean;
+  /**
+   * Encoding of the image.
+   * @defaultValue `binary`
+   */
+  encoding?: 'base64' | 'binary';
+  /**
+   * Capture the screenshot beyond the viewport.
+   * @defaultValue `true`
+   */
+  captureBeyondViewport?: boolean;
+  /**
+   * Capture the screenshot from the surface, rather than the view.
+   * @defaultValue `true`
+   */
+  fromSurface?: boolean;
+}
+
+/**
+ * All the events that a page instance may emit.
+ *
+ * @public
+ */
+export const enum PageEmittedEvents {
+  /**
+   * Emitted when the page closes.
+   * @eventProperty
+   */
+  Close = 'close',
+  /**
+   * Emitted when JavaScript within the page calls one of console API methods,
+   * e.g. `console.log` or `console.dir`. Also emitted if the page throws an
+   * error or a warning.
+   *
+   * @remarks
+   * A `console` event provides a {@link ConsoleMessage} representing the
+   * console message that was logged.
+   *
+   * @example
+   * An example of handling `console` event:
+   *
+   * ```ts
+   * page.on('console', msg => {
+   *   for (let i = 0; i < msg.args().length; ++i)
+   *     console.log(`${i}: ${msg.args()[i]}`);
+   * });
+   * page.evaluate(() => console.log('hello', 5, {foo: 'bar'}));
+   * ```
+   */
+  Console = 'console',
+  /**
+   * Emitted when a JavaScript dialog appears, such as `alert`, `prompt`,
+   * `confirm` or `beforeunload`. Puppeteer can respond to the dialog via
+   * {@link Dialog.accept} or {@link Dialog.dismiss}.
+   */
+  Dialog = 'dialog',
+  /**
+   * Emitted when the JavaScript
+   * {@link https://developer.mozilla.org/en-US/docs/Web/Events/DOMContentLoaded | DOMContentLoaded }
+   * event is dispatched.
+   */
+  DOMContentLoaded = 'domcontentloaded',
+  /**
+   * Emitted when the page crashes. Will contain an `Error`.
+   */
+  Error = 'error',
+  /** Emitted when a frame is attached. Will contain a {@link Frame}. */
+  FrameAttached = 'frameattached',
+  /** Emitted when a frame is detached. Will contain a {@link Frame}. */
+  FrameDetached = 'framedetached',
+  /**
+   * Emitted when a frame is navigated to a new URL. Will contain a
+   * {@link Frame}.
+   */
+  FrameNavigated = 'framenavigated',
+  /**
+   * Emitted when the JavaScript
+   * {@link https://developer.mozilla.org/en-US/docs/Web/Events/load | load}
+   * event is dispatched.
+   */
+  Load = 'load',
+  /**
+   * Emitted when the JavaScript code makes a call to `console.timeStamp`. For
+   * the list of metrics see {@link Page.metrics | page.metrics}.
+   *
+   * @remarks
+   * Contains an object with two properties:
+   *
+   * - `title`: the title passed to `console.timeStamp`
+   * - `metrics`: objec containing metrics as key/value pairs. The values will
+   *   be `number`s.
+   */
+  Metrics = 'metrics',
+  /**
+   * Emitted when an uncaught exception happens within the page. Contains an
+   * `Error`.
+   */
+  PageError = 'pageerror',
+  /**
+   * Emitted when the page opens a new tab or window.
+   *
+   * Contains a {@link Page} corresponding to the popup window.
+   *
+   * @example
+   *
+   * ```ts
+   * const [popup] = await Promise.all([
+   *   new Promise(resolve => page.once('popup', resolve)),
+   *   page.click('a[target=_blank]'),
+   * ]);
+   * ```
+   *
+   * ```ts
+   * const [popup] = await Promise.all([
+   *   new Promise(resolve => page.once('popup', resolve)),
+   *   page.evaluate(() => window.open('https://example.com')),
+   * ]);
+   * ```
+   */
+  Popup = 'popup',
+  /**
+   * Emitted when a page issues a request and contains a {@link HTTPRequest}.
+   *
+   * @remarks
+   * The object is readonly. See {@link Page.setRequestInterception} for
+   * intercepting and mutating requests.
+   */
+  Request = 'request',
+  /**
+   * Emitted when a request ended up loading from cache. Contains a
+   * {@link HTTPRequest}.
+   *
+   * @remarks
+   * For certain requests, might contain undefined.
+   * {@link https://crbug.com/750469}
+   */
+  RequestServedFromCache = 'requestservedfromcache',
+  /**
+   * Emitted when a request fails, for example by timing out.
+   *
+   * Contains a {@link HTTPRequest}.
+   *
+   * @remarks
+   * HTTP Error responses, such as 404 or 503, are still successful responses
+   * from HTTP standpoint, so request will complete with `requestfinished` event
+   * and not with `requestfailed`.
+   */
+  RequestFailed = 'requestfailed',
+  /**
+   * Emitted when a request finishes successfully. Contains a
+   * {@link HTTPRequest}.
+   */
+  RequestFinished = 'requestfinished',
+  /**
+   * Emitted when a response is received. Contains a {@link HTTPResponse}.
+   */
+  Response = 'response',
+  /**
+   * Emitted when a dedicated
+   * {@link https://developer.mozilla.org/en-US/docs/Web/API/Web_Workers_API | WebWorker}
+   * is spawned by the page.
+   */
+  WorkerCreated = 'workercreated',
+  /**
+   * Emitted when a dedicated
+   * {@link https://developer.mozilla.org/en-US/docs/Web/API/Web_Workers_API | WebWorker}
+   * is destroyed by the page.
+   */
+  WorkerDestroyed = 'workerdestroyed',
+}
+
+/**
+ * Denotes the objects received by callback functions for page events.
+ *
+ * See {@link PageEmittedEvents} for more detail on the events and when they are
+ * emitted.
+ *
+ * @public
+ */
+export interface PageEventObject {
+  close: never;
+  console: ConsoleMessage;
+  dialog: Dialog;
+  domcontentloaded: never;
+  error: Error;
+  frameattached: Frame;
+  framedetached: Frame;
+  framenavigated: Frame;
+  load: never;
+  metrics: {title: string; metrics: Metrics};
+  pageerror: Error;
+  popup: Page;
+  request: HTTPRequest;
+  response: HTTPResponse;
+  requestfailed: HTTPRequest;
+  requestfinished: HTTPRequest;
+  requestservedfromcache: HTTPRequest;
+  workercreated: WebWorker;
+  workerdestroyed: WebWorker;
+}
+
+/**
+ * Page provides methods to interact with a single tab or
+ * {@link https://developer.chrome.com/extensions/background_pages | extension background page}
+ * in Chromium.
+ *
+ * :::note
+ *
+ * One Browser instance might have multiple Page instances.
+ *
+ * :::
+ *
+ * @example
+ * This example creates a page, navigates it to a URL, and then saves a screenshot:
+ *
+ * ```ts
+ * const puppeteer = require('puppeteer');
+ *
+ * (async () => {
+ *   const browser = await puppeteer.launch();
+ *   const page = await browser.newPage();
+ *   await page.goto('https://example.com');
+ *   await page.screenshot({path: 'screenshot.png'});
+ *   await browser.close();
+ * })();
+ * ```
+ *
+ * The Page class extends from Puppeteer's {@link EventEmitter} class and will
+ * emit various events which are documented in the {@link PageEmittedEvents} enum.
+ *
+ * @example
+ * This example logs a message for a single page `load` event:
+ *
+ * ```ts
+ * page.once('load', () => console.log('Page loaded!'));
+ * ```
+ *
+ * To unsubscribe from events use the {@link Page.off} method:
+ *
+ * ```ts
+ * function logRequest(interceptedRequest) {
+ *   console.log('A request was made:', interceptedRequest.url());
+ * }
+ * page.on('request', logRequest);
+ * // Sometime later...
+ * page.off('request', logRequest);
+ * ```
+ *
+ * @public
+ */
+export class Page extends EventEmitter {
+  /**
+   * @internal
+   */
+  static async _create(
+    client: CDPSession,
+    target: Target,
+    ignoreHTTPSErrors: boolean,
+    defaultViewport: Viewport | null,
+    screenshotTaskQueue: TaskQueue
+  ): Promise<Page> {
+    const page = new Page(
+      client,
+      target,
+      ignoreHTTPSErrors,
+      screenshotTaskQueue
+    );
+    await page.#initialize();
+    if (defaultViewport) {
+      await page.setViewport(defaultViewport);
+    }
+    return page;
+  }
+
+  #closed = false;
+  #client: CDPSession;
+  #target: Target;
+  #keyboard: Keyboard;
+  #mouse: Mouse;
+  #timeoutSettings = new TimeoutSettings();
+  #touchscreen: Touchscreen;
+  #accessibility: Accessibility;
+  #frameManager: FrameManager;
+  #emulationManager: EmulationManager;
+  #tracing: Tracing;
+  #pageBindings = new Map<string, Function>();
+  #coverage: Coverage;
+  #javascriptEnabled = true;
+  #viewport: Viewport | null;
+  #screenshotTaskQueue: TaskQueue;
+  #workers = new Map<string, WebWorker>();
+  #fileChooserPromises = new Set<DeferredPromise<FileChooser>>();
+
+  #disconnectPromise?: Promise<Error>;
+  #userDragInterceptionEnabled = false;
+  #handlerMap = new WeakMap<Handler, Handler>();
+
+  /**
+   * @internal
+   */
+  constructor(
+    client: CDPSession,
+    target: Target,
+    ignoreHTTPSErrors: boolean,
+    screenshotTaskQueue: TaskQueue
+  ) {
+    super();
+    this.#client = client;
+    this.#target = target;
+    this.#keyboard = new Keyboard(client);
+    this.#mouse = new Mouse(client, this.#keyboard);
+    this.#touchscreen = new Touchscreen(client, this.#keyboard);
+    this.#accessibility = new Accessibility(client);
+    this.#frameManager = new FrameManager(
+      client,
+      this,
+      ignoreHTTPSErrors,
+      this.#timeoutSettings
+    );
+    this.#emulationManager = new EmulationManager(client);
+    this.#tracing = new Tracing(client);
+    this.#coverage = new Coverage(client);
+    this.#screenshotTaskQueue = screenshotTaskQueue;
+    this.#viewport = null;
+
+    this.#target
+      ._targetManager()
+      .addTargetInterceptor(this.#client, this.#onAttachedToTarget);
+
+    this.#target
+      ._targetManager()
+      .on(TargetManagerEmittedEvents.TargetGone, this.#onDetachedFromTarget);
+
+    this.#frameManager.on(FrameManagerEmittedEvents.FrameAttached, event => {
+      return this.emit(PageEmittedEvents.FrameAttached, event);
+    });
+    this.#frameManager.on(FrameManagerEmittedEvents.FrameDetached, event => {
+      return this.emit(PageEmittedEvents.FrameDetached, event);
+    });
+    this.#frameManager.on(FrameManagerEmittedEvents.FrameNavigated, event => {
+      return this.emit(PageEmittedEvents.FrameNavigated, event);
+    });
+
+    const networkManager = this.#frameManager.networkManager;
+    networkManager.on(NetworkManagerEmittedEvents.Request, event => {
+      return this.emit(PageEmittedEvents.Request, event);
+    });
+    networkManager.on(
+      NetworkManagerEmittedEvents.RequestServedFromCache,
+      event => {
+        return this.emit(PageEmittedEvents.RequestServedFromCache, event);
+      }
+    );
+    networkManager.on(NetworkManagerEmittedEvents.Response, event => {
+      return this.emit(PageEmittedEvents.Response, event);
+    });
+    networkManager.on(NetworkManagerEmittedEvents.RequestFailed, event => {
+      return this.emit(PageEmittedEvents.RequestFailed, event);
+    });
+    networkManager.on(NetworkManagerEmittedEvents.RequestFinished, event => {
+      return this.emit(PageEmittedEvents.RequestFinished, event);
+    });
+
+    client.on('Page.domContentEventFired', () => {
+      return this.emit(PageEmittedEvents.DOMContentLoaded);
+    });
+    client.on('Page.loadEventFired', () => {
+      return this.emit(PageEmittedEvents.Load);
+    });
+    client.on('Runtime.consoleAPICalled', event => {
+      return this.#onConsoleAPI(event);
+    });
+    client.on('Runtime.bindingCalled', event => {
+      return this.#onBindingCalled(event);
+    });
+    client.on('Page.javascriptDialogOpening', event => {
+      return this.#onDialog(event);
+    });
+    client.on('Runtime.exceptionThrown', exception => {
+      return this.#handleException(exception.exceptionDetails);
+    });
+    client.on('Inspector.targetCrashed', () => {
+      return this.#onTargetCrashed();
+    });
+    client.on('Performance.metrics', event => {
+      return this.#emitMetrics(event);
+    });
+    client.on('Log.entryAdded', event => {
+      return this.#onLogEntryAdded(event);
+    });
+    client.on('Page.fileChooserOpened', event => {
+      return this.#onFileChooser(event);
+    });
+    this.#target._isClosedPromise.then(() => {
+      this.#target
+        ._targetManager()
+        .removeTargetInterceptor(this.#client, this.#onAttachedToTarget);
+
+      this.#target
+        ._targetManager()
+        .off(TargetManagerEmittedEvents.TargetGone, this.#onDetachedFromTarget);
+      this.emit(PageEmittedEvents.Close);
+      this.#closed = true;
+    });
+  }
+
+  #onDetachedFromTarget = (target: Target) => {
+    const sessionId = target._session()?.id();
+
+    this.#frameManager.onDetachedFromTarget(target);
+
+    const worker = this.#workers.get(sessionId!);
+    if (!worker) {
+      return;
+    }
+    this.#workers.delete(sessionId!);
+    this.emit(PageEmittedEvents.WorkerDestroyed, worker);
+  };
+
+  #onAttachedToTarget = async (createdTarget: Target) => {
+    this.#frameManager.onAttachedToTarget(createdTarget);
+    if (createdTarget._getTargetInfo().type === 'worker') {
+      const session = createdTarget._session();
+      assert(session);
+      const worker = new WebWorker(
+        session,
+        createdTarget.url(),
+        this.#addConsoleMessage.bind(this),
+        this.#handleException.bind(this)
+      );
+      this.#workers.set(session.id(), worker);
+      this.emit(PageEmittedEvents.WorkerCreated, worker);
+    }
+    if (createdTarget._session()) {
+      this.#target
+        ._targetManager()
+        .addTargetInterceptor(
+          createdTarget._session()!,
+          this.#onAttachedToTarget
+        );
+    }
+  };
+
+  async #initialize(): Promise<void> {
+    await Promise.all([
+      this.#frameManager.initialize(this.#target._targetId),
+      this.#client.send('Performance.enable'),
+      this.#client.send('Log.enable'),
+    ]);
+  }
+
+  async #onFileChooser(
+    event: Protocol.Page.FileChooserOpenedEvent
+  ): Promise<void> {
+    if (!this.#fileChooserPromises.size) {
+      return;
+    }
+
+    const frame = this.#frameManager.frame(event.frameId);
+    assert(frame, 'This should never happen.');
+
+    // This is guaranteed to be an HTMLInputElement handle by the event.
+    const handle = (await frame.worlds[MAIN_WORLD].adoptBackendNode(
+      event.backendNodeId
+    )) as ElementHandle<HTMLInputElement>;
+
+    const fileChooser = new FileChooser(handle, event);
+    for (const promise of this.#fileChooserPromises) {
+      promise.resolve(fileChooser);
+    }
+    this.#fileChooserPromises.clear();
+  }
+
+  /**
+   * @returns `true` if drag events are being intercepted, `false` otherwise.
+   */
+  isDragInterceptionEnabled(): boolean {
+    return this.#userDragInterceptionEnabled;
+  }
+
+  /**
+   * @returns `true` if the page has JavaScript enabled, `false` otherwise.
+   */
+  isJavaScriptEnabled(): boolean {
+    return this.#javascriptEnabled;
+  }
+
+  /**
+   * Listen to page events.
+   *
+   * :::note
+   *
+   * This method exists to define event typings and handle proper wireup of
+   * cooperative request interception. Actual event listening and dispatching is
+   * delegated to {@link EventEmitter}.
+   *
+   * :::
+   */
+  override on<K extends keyof PageEventObject>(
+    eventName: K,
+    handler: (event: PageEventObject[K]) => void
+  ): EventEmitter {
+    if (eventName === 'request') {
+      const wrap =
+        this.#handlerMap.get(handler) ||
+        ((event: HTTPRequest) => {
+          event.enqueueInterceptAction(() => {
+            return handler(event as PageEventObject[K]);
+          });
+        });
+
+      this.#handlerMap.set(handler, wrap);
+
+      return super.on(eventName, wrap);
+    }
+    return super.on(eventName, handler);
+  }
+
+  override once<K extends keyof PageEventObject>(
+    eventName: K,
+    handler: (event: PageEventObject[K]) => void
+  ): EventEmitter {
+    // Note: this method only exists to define the types; we delegate the impl
+    // to EventEmitter.
+    return super.once(eventName, handler);
+  }
+
+  override off<K extends keyof PageEventObject>(
+    eventName: K,
+    handler: (event: PageEventObject[K]) => void
+  ): EventEmitter {
+    if (eventName === 'request') {
+      handler = this.#handlerMap.get(handler) || handler;
+    }
+
+    return super.off(eventName, handler);
+  }
+
+  /**
+   * This method is typically coupled with an action that triggers file
+   * choosing.
+   *
+   * :::caution
+   *
+   * This must be called before the file chooser is launched. It will not return
+   * a currently active file chooser.
+   *
+   * :::
+   *
+   * @remarks
+   * In non-headless Chromium, this method results in the native file picker
+   * dialog `not showing up` for the user.
+   *
+   * @example
+   * The following example clicks a button that issues a file chooser
+   * and then responds with `/tmp/myfile.pdf` as if a user has selected this file.
+   *
+   * ```ts
+   * const [fileChooser] = await Promise.all([
+   *   page.waitForFileChooser(),
+   *   page.click('#upload-file-button'),
+   *   // some button that triggers file selection
+   * ]);
+   * await fileChooser.accept(['/tmp/myfile.pdf']);
+   * ```
+   */
+  waitForFileChooser(options: WaitTimeoutOptions = {}): Promise<FileChooser> {
+    const needsEnable = this.#fileChooserPromises.size === 0;
+    const {timeout = this.#timeoutSettings.timeout()} = options;
+    const promise = createDeferredPromise<FileChooser>({
+      message: `Waiting for \`FileChooser\` failed: ${timeout}ms exceeded`,
+      timeout,
+    });
+    this.#fileChooserPromises.add(promise);
+    let enablePromise: Promise<void> | undefined;
+    if (needsEnable) {
+      enablePromise = this.#client.send('Page.setInterceptFileChooserDialog', {
+        enabled: true,
+      });
+    }
+    return Promise.all([promise, enablePromise])
+      .then(([result]) => {
+        return result;
+      })
+      .catch(error => {
+        this.#fileChooserPromises.delete(promise);
+        throw error;
+      });
+  }
+
+  /**
+   * Sets the page's geolocation.
+   *
+   * @remarks
+   * Consider using {@link BrowserContext.overridePermissions} to grant
+   * permissions for the page to read its geolocation.
+   *
+   * @example
+   *
+   * ```ts
+   * await page.setGeolocation({latitude: 59.95, longitude: 30.31667});
+   * ```
+   */
+  async setGeolocation(options: GeolocationOptions): Promise<void> {
+    const {longitude, latitude, accuracy = 0} = options;
+    if (longitude < -180 || longitude > 180) {
+      throw new Error(
+        `Invalid longitude "${longitude}": precondition -180 <= LONGITUDE <= 180 failed.`
+      );
+    }
+    if (latitude < -90 || latitude > 90) {
+      throw new Error(
+        `Invalid latitude "${latitude}": precondition -90 <= LATITUDE <= 90 failed.`
+      );
+    }
+    if (accuracy < 0) {
+      throw new Error(
+        `Invalid accuracy "${accuracy}": precondition 0 <= ACCURACY failed.`
+      );
+    }
+    await this.#client.send('Emulation.setGeolocationOverride', {
+      longitude,
+      latitude,
+      accuracy,
+    });
+  }
+
+  /**
+   * @returns A target this page was created from.
+   */
+  target(): Target {
+    return this.#target;
+  }
+
+  /**
+   * @internal
+   */
+  _client(): CDPSession {
+    return this.#client;
+  }
+
+  /**
+   * Get the browser the page belongs to.
+   */
+  browser(): Browser {
+    return this.#target.browser();
+  }
+
+  /**
+   * Get the browser context that the page belongs to.
+   */
+  browserContext(): BrowserContext {
+    return this.#target.browserContext();
+  }
+
+  #onTargetCrashed(): void {
+    this.emit('error', new Error('Page crashed!'));
+  }
+
+  #onLogEntryAdded(event: Protocol.Log.EntryAddedEvent): void {
+    const {level, text, args, source, url, lineNumber} = event.entry;
+    if (args) {
+      args.map(arg => {
+        return releaseObject(this.#client, arg);
+      });
+    }
+    if (source !== 'worker') {
+      this.emit(
+        PageEmittedEvents.Console,
+        new ConsoleMessage(level, text, [], [{url, lineNumber}])
+      );
+    }
+  }
+
+  /**
+   * @returns The page's main frame.
+   *
+   * @remarks
+   * Page is guaranteed to have a main frame which persists during navigations.
+   */
+  mainFrame(): Frame {
+    return this.#frameManager.mainFrame();
+  }
+
+  get keyboard(): Keyboard {
+    return this.#keyboard;
+  }
+
+  get touchscreen(): Touchscreen {
+    return this.#touchscreen;
+  }
+
+  get coverage(): Coverage {
+    return this.#coverage;
+  }
+
+  get tracing(): Tracing {
+    return this.#tracing;
+  }
+
+  get accessibility(): Accessibility {
+    return this.#accessibility;
+  }
+
+  /**
+   * @returns An array of all frames attached to the page.
+   */
+  frames(): Frame[] {
+    return this.#frameManager.frames();
+  }
+
+  /**
+   * @returns all of the dedicated {@link
+   * https://developer.mozilla.org/en-US/docs/Web/API/Web_Workers_API |
+   * WebWorkers} associated with the page.
+   *
+   * @remarks
+   * This does not contain ServiceWorkers
+   */
+  workers(): WebWorker[] {
+    return Array.from(this.#workers.values());
+  }
+
+  /**
+   * Activating request interception enables {@link HTTPRequest.abort},
+   * {@link HTTPRequest.continue} and {@link HTTPRequest.respond} methods. This
+   * provides the capability to modify network requests that are made by a page.
+   *
+   * Once request interception is enabled, every request will stall unless it's
+   * continued, responded or aborted; or completed using the browser cache.
+   *
+   * Enabling request interception disables page caching.
+   *
+   * See the
+   * {@link https://pptr.dev/next/guides/request-interception|Request interception guide}
+   * for more details.
+   *
+   * @example
+   * An example of a naïve request interceptor that aborts all image requests:
+   *
+   * ```ts
+   * const puppeteer = require('puppeteer');
+   * (async () => {
+   *   const browser = await puppeteer.launch();
+   *   const page = await browser.newPage();
+   *   await page.setRequestInterception(true);
+   *   page.on('request', interceptedRequest => {
+   *     if (
+   *       interceptedRequest.url().endsWith('.png') ||
+   *       interceptedRequest.url().endsWith('.jpg')
+   *     )
+   *       interceptedRequest.abort();
+   *     else interceptedRequest.continue();
+   *   });
+   *   await page.goto('https://example.com');
+   *   await browser.close();
+   * })();
+   * ```
+   *
+   * @param value - Whether to enable request interception.
+   */
+  async setRequestInterception(value: boolean): Promise<void> {
+    return this.#frameManager.networkManager.setRequestInterception(value);
+  }
+
+  /**
+   * @param enabled - Whether to enable drag interception.
+   *
+   * @remarks
+   * Activating drag interception enables the `Input.drag`,
+   * methods This provides the capability to capture drag events emitted
+   * on the page, which can then be used to simulate drag-and-drop.
+   */
+  async setDragInterception(enabled: boolean): Promise<void> {
+    this.#userDragInterceptionEnabled = enabled;
+    return this.#client.send('Input.setInterceptDrags', {enabled});
+  }
+
+  /**
+   * @param enabled - When `true`, enables offline mode for the page.
+   * @remarks
+   * NOTE: while this method sets the network connection to offline, it does
+   * not change the parameters used in [page.emulateNetworkConditions(networkConditions)]
+   * (#pageemulatenetworkconditionsnetworkconditions)
+   */
+  setOfflineMode(enabled: boolean): Promise<void> {
+    return this.#frameManager.networkManager.setOfflineMode(enabled);
+  }
+
+  /**
+   * @param networkConditions - Passing `null` disables network condition emulation.
+   * @example
+   *
+   * ```ts
+   * const puppeteer = require('puppeteer');
+   * const slow3G = puppeteer.networkConditions['Slow 3G'];
+   *
+   * (async () => {
+   *   const browser = await puppeteer.launch();
+   *   const page = await browser.newPage();
+   *   await page.emulateNetworkConditions(slow3G);
+   *   await page.goto('https://www.google.com');
+   *   // other actions...
+   *   await browser.close();
+   * })();
+   * ```
+   *
+   * @remarks
+   * NOTE: This does not affect WebSockets and WebRTC PeerConnections (see
+   * https://crbug.com/563644). To set the page offline, you can use
+   * [page.setOfflineMode(enabled)](#pagesetofflinemodeenabled).
+   */
+  emulateNetworkConditions(
+    networkConditions: NetworkConditions | null
+  ): Promise<void> {
+    return this.#frameManager.networkManager.emulateNetworkConditions(
+      networkConditions
+    );
+  }
+
+  /**
+   * This setting will change the default maximum navigation time for the
+   * following methods and related shortcuts:
+   *
+   * - {@link Page.goBack | page.goBack(options)}
+   *
+   * - {@link Page.goForward | page.goForward(options)}
+   *
+   * - {@link Page.goto | page.goto(url,options)}
+   *
+   * - {@link Page.reload | page.reload(options)}
+   *
+   * - {@link Page.setContent | page.setContent(html,options)}
+   *
+   * - {@link Page.waitForNavigation | page.waitForNavigation(options)}
+   *   @param timeout - Maximum navigation time in milliseconds.
+   */
+  setDefaultNavigationTimeout(timeout: number): void {
+    this.#timeoutSettings.setDefaultNavigationTimeout(timeout);
+  }
+
+  /**
+   * @param timeout - Maximum time in milliseconds.
+   */
+  setDefaultTimeout(timeout: number): void {
+    this.#timeoutSettings.setDefaultTimeout(timeout);
+  }
+
+  /**
+   * @returns Maximum time in milliseconds.
+   */
+  getDefaultTimeout(): number {
+    return this.#timeoutSettings.timeout();
+  }
+
+  /**
+   * Runs `document.querySelector` within the page. If no element matches the
+   * selector, the return value resolves to `null`.
+   *
+   * @param selector - A `selector` to query page for
+   * {@link https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Selectors | selector}
+   * to query page for.
+   */
+  async $<Selector extends string>(
+    selector: Selector
+  ): Promise<ElementHandle<NodeFor<Selector>> | null> {
+    return this.mainFrame().$(selector);
+  }
+
+  /**
+   * The method runs `document.querySelectorAll` within the page. If no elements
+   * match the selector, the return value resolves to `[]`.
+   * @remarks
+   * Shortcut for {@link Frame.$$ | Page.mainFrame().$$(selector) }.
+   * @param selector - A `selector` to query page for
+   */
+  async $$<Selector extends string>(
+    selector: Selector
+  ): Promise<Array<ElementHandle<NodeFor<Selector>>>> {
+    return this.mainFrame().$$(selector);
+  }
+
+  /**
+   * @remarks
+   *
+   * The only difference between {@link Page.evaluate | page.evaluate} and
+   * `page.evaluateHandle` is that `evaluateHandle` will return the value
+   * wrapped in an in-page object.
+   *
+   * If the function passed to `page.evaluteHandle` returns a Promise, the
+   * function will wait for the promise to resolve and return its value.
+   *
+   * You can pass a string instead of a function (although functions are
+   * recommended as they are easier to debug and use with TypeScript):
+   *
+   * @example
+   *
+   * ```ts
+   * const aHandle = await page.evaluateHandle('document');
+   * ```
+   *
+   * @example
+   * {@link JSHandle} instances can be passed as arguments to the `pageFunction`:
+   *
+   * ```ts
+   * const aHandle = await page.evaluateHandle(() => document.body);
+   * const resultHandle = await page.evaluateHandle(
+   *   body => body.innerHTML,
+   *   aHandle
+   * );
+   * console.log(await resultHandle.jsonValue());
+   * await resultHandle.dispose();
+   * ```
+   *
+   * Most of the time this function returns a {@link JSHandle},
+   * but if `pageFunction` returns a reference to an element,
+   * you instead get an {@link ElementHandle} back:
+   *
+   * @example
+   *
+   * ```ts
+   * const button = await page.evaluateHandle(() =>
+   *   document.querySelector('button')
+   * );
+   * // can call `click` because `button` is an `ElementHandle`
+   * await button.click();
+   * ```
+   *
+   * The TypeScript definitions assume that `evaluateHandle` returns
+   * a `JSHandle`, but if you know it's going to return an
+   * `ElementHandle`, pass it as the generic argument:
+   *
+   * ```ts
+   * const button = await page.evaluateHandle<ElementHandle>(...);
+   * ```
+   *
+   * @param pageFunction - a function that is run within the page
+   * @param args - arguments to be passed to the pageFunction
+   */
+  async evaluateHandle<
+    Params extends unknown[],
+    Func extends EvaluateFunc<Params> = EvaluateFunc<Params>
+  >(
+    pageFunction: Func | string,
+    ...args: Params
+  ): Promise<HandleFor<Awaited<ReturnType<Func>>>> {
+    const context = await this.mainFrame().executionContext();
+    return context.evaluateHandle(pageFunction, ...args);
+  }
+
+  /**
+   * This method iterates the JavaScript heap and finds all objects with the
+   * given prototype.
+   *
+   * @example
+   *
+   * ```ts
+   * // Create a Map object
+   * await page.evaluate(() => (window.map = new Map()));
+   * // Get a handle to the Map object prototype
+   * const mapPrototype = await page.evaluateHandle(() => Map.prototype);
+   * // Query all map instances into an array
+   * const mapInstances = await page.queryObjects(mapPrototype);
+   * // Count amount of map objects in heap
+   * const count = await page.evaluate(maps => maps.length, mapInstances);
+   * await mapInstances.dispose();
+   * await mapPrototype.dispose();
+   * ```
+   *
+   * @param prototypeHandle - a handle to the object prototype.
+   * @returns Promise which resolves to a handle to an array of objects with
+   * this prototype.
+   */
+  async queryObjects<Prototype>(
+    prototypeHandle: JSHandle<Prototype>
+  ): Promise<JSHandle<Prototype[]>> {
+    const context = await this.mainFrame().executionContext();
+    assert(!prototypeHandle.disposed, 'Prototype JSHandle is disposed!');
+    const remoteObject = prototypeHandle.remoteObject();
+    assert(
+      remoteObject.objectId,
+      'Prototype JSHandle must not be referencing primitive value'
+    );
+    const response = await context._client.send('Runtime.queryObjects', {
+      prototypeObjectId: remoteObject.objectId,
+    });
+    return createJSHandle(context, response.objects) as HandleFor<Prototype[]>;
+  }
+
+  /**
+   * This method runs `document.querySelector` within the page and passes the
+   * result as the first argument to the `pageFunction`.
+   *
+   * @remarks
+   *
+   * If no element is found matching `selector`, the method will throw an error.
+   *
+   * If `pageFunction` returns a promise `$eval` will wait for the promise to
+   * resolve and then return its value.
+   *
+   * @example
+   *
+   * ```ts
+   * const searchValue = await page.$eval('#search', el => el.value);
+   * const preloadHref = await page.$eval('link[rel=preload]', el => el.href);
+   * const html = await page.$eval('.main-container', el => el.outerHTML);
+   * ```
+   *
+   * If you are using TypeScript, you may have to provide an explicit type to the
+   * first argument of the `pageFunction`.
+   * By default it is typed as `Element`, but you may need to provide a more
+   * specific sub-type:
+   *
+   * @example
+   *
+   * ```ts
+   * // if you don't provide HTMLInputElement here, TS will error
+   * // as `value` is not on `Element`
+   * const searchValue = await page.$eval(
+   *   '#search',
+   *   (el: HTMLInputElement) => el.value
+   * );
+   * ```
+   *
+   * The compiler should be able to infer the return type
+   * from the `pageFunction` you provide. If it is unable to, you can use the generic
+   * type to tell the compiler what return type you expect from `$eval`:
+   *
+   * @example
+   *
+   * ```ts
+   * // The compiler can infer the return type in this case, but if it can't
+   * // or if you want to be more explicit, provide it as the generic type.
+   * const searchValue = await page.$eval<string>(
+   *   '#search',
+   *   (el: HTMLInputElement) => el.value
+   * );
+   * ```
+   *
+   * @param selector - the
+   * {@link https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Selectors | selector}
+   * to query for
+   * @param pageFunction - the function to be evaluated in the page context.
+   * Will be passed the result of `document.querySelector(selector)` as its
+   * first argument.
+   * @param args - any additional arguments to pass through to `pageFunction`.
+   *
+   * @returns The result of calling `pageFunction`. If it returns an element it
+   * is wrapped in an {@link ElementHandle}, else the raw value itself is
+   * returned.
+   */
+  async $eval<
+    Selector extends string,
+    Params extends unknown[],
+    Func extends EvaluateFunc<
+      [ElementHandle<NodeFor<Selector>>, ...Params]
+    > = EvaluateFunc<[ElementHandle<NodeFor<Selector>>, ...Params]>
+  >(
+    selector: Selector,
+    pageFunction: Func | string,
+    ...args: Params
+  ): Promise<Awaited<ReturnType<Func>>> {
+    return this.mainFrame().$eval(selector, pageFunction, ...args);
+  }
+
+  /**
+   * This method runs `Array.from(document.querySelectorAll(selector))` within
+   * the page and passes the result as the first argument to the `pageFunction`.
+   *
+   * @remarks
+   * If `pageFunction` returns a promise `$$eval` will wait for the promise to
+   * resolve and then return its value.
+   *
+   * @example
+   *
+   * ```ts
+   * // get the amount of divs on the page
+   * const divCount = await page.$$eval('div', divs => divs.length);
+   *
+   * // get the text content of all the `.options` elements:
+   * const options = await page.$$eval('div > span.options', options => {
+   *   return options.map(option => option.textContent);
+   * });
+   * ```
+   *
+   * If you are using TypeScript, you may have to provide an explicit type to the
+   * first argument of the `pageFunction`.
+   * By default it is typed as `Element[]`, but you may need to provide a more
+   * specific sub-type:
+   *
+   * @example
+   *
+   * ```ts
+   * // if you don't provide HTMLInputElement here, TS will error
+   * // as `value` is not on `Element`
+   * await page.$$eval('input', (elements: HTMLInputElement[]) => {
+   *   return elements.map(e => e.value);
+   * });
+   * ```
+   *
+   * The compiler should be able to infer the return type
+   * from the `pageFunction` you provide. If it is unable to, you can use the generic
+   * type to tell the compiler what return type you expect from `$$eval`:
+   *
+   * @example
+   *
+   * ```ts
+   * // The compiler can infer the return type in this case, but if it can't
+   * // or if you want to be more explicit, provide it as the generic type.
+   * const allInputValues = await page.$$eval<string[]>(
+   *   'input',
+   *   (elements: HTMLInputElement[]) => elements.map(e => e.textContent)
+   * );
+   * ```
+   *
+   * @param selector - the
+   * {@link https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Selectors | selector}
+   * to query for
+   * @param pageFunction - the function to be evaluated in the page context.
+   * Will be passed the result of
+   * `Array.from(document.querySelectorAll(selector))` as its first argument.
+   * @param args - any additional arguments to pass through to `pageFunction`.
+   *
+   * @returns The result of calling `pageFunction`. If it returns an element it
+   * is wrapped in an {@link ElementHandle}, else the raw value itself is
+   * returned.
+   */
+  async $$eval<
+    Selector extends string,
+    Params extends unknown[],
+    Func extends EvaluateFunc<
+      [Array<NodeFor<Selector>>, ...Params]
+    > = EvaluateFunc<[Array<NodeFor<Selector>>, ...Params]>
+  >(
+    selector: Selector,
+    pageFunction: Func | string,
+    ...args: Params
+  ): Promise<Awaited<ReturnType<Func>>> {
+    return this.mainFrame().$$eval(selector, pageFunction, ...args);
+  }
+
+  /**
+   * The method evaluates the XPath expression relative to the page document as
+   * its context node. If there are no such elements, the method resolves to an
+   * empty array.
+   *
+   * @remarks
+   * Shortcut for {@link Frame.$x | Page.mainFrame().$x(expression) }.
+   *
+   * @param expression - Expression to evaluate
+   */
+  async $x(expression: string): Promise<Array<ElementHandle<Node>>> {
+    return this.mainFrame().$x(expression);
+  }
+
+  /**
+   * If no URLs are specified, this method returns cookies for the current page
+   * URL. If URLs are specified, only cookies for those URLs are returned.
+   */
+  async cookies(...urls: string[]): Promise<Protocol.Network.Cookie[]> {
+    const originalCookies = (
+      await this.#client.send('Network.getCookies', {
+        urls: urls.length ? urls : [this.url()],
+      })
+    ).cookies;
+
+    const unsupportedCookieAttributes = ['priority'];
+    const filterUnsupportedAttributes = (
+      cookie: Protocol.Network.Cookie
+    ): Protocol.Network.Cookie => {
+      for (const attr of unsupportedCookieAttributes) {
+        delete (cookie as unknown as Record<string, unknown>)[attr];
+      }
+      return cookie;
+    };
+    return originalCookies.map(filterUnsupportedAttributes);
+  }
+
+  async deleteCookie(
+    ...cookies: Protocol.Network.DeleteCookiesRequest[]
+  ): Promise<void> {
+    const pageURL = this.url();
+    for (const cookie of cookies) {
+      const item = Object.assign({}, cookie);
+      if (!cookie.url && pageURL.startsWith('http')) {
+        item.url = pageURL;
+      }
+      await this.#client.send('Network.deleteCookies', item);
+    }
+  }
+
+  /**
+   * @example
+   *
+   * ```ts
+   * await page.setCookie(cookieObject1, cookieObject2);
+   * ```
+   */
+  async setCookie(...cookies: Protocol.Network.CookieParam[]): Promise<void> {
+    const pageURL = this.url();
+    const startsWithHTTP = pageURL.startsWith('http');
+    const items = cookies.map(cookie => {
+      const item = Object.assign({}, cookie);
+      if (!item.url && startsWithHTTP) {
+        item.url = pageURL;
+      }
+      assert(
+        item.url !== 'about:blank',
+        `Blank page can not have cookie "${item.name}"`
+      );
+      assert(
+        !String.prototype.startsWith.call(item.url || '', 'data:'),
+        `Data URL page can not have cookie "${item.name}"`
+      );
+      return item;
+    });
+    await this.deleteCookie(...items);
+    if (items.length) {
+      await this.#client.send('Network.setCookies', {cookies: items});
+    }
+  }
+
+  /**
+   * Adds a `<script>` tag into the page with the desired URL or content.
+   *
+   * @remarks
+   * Shortcut for
+   * {@link Frame.addScriptTag | page.mainFrame().addScriptTag(options)}.
+   *
+   * @param options - Options for the script.
+   * @returns An {@link ElementHandle | element handle} to the injected
+   * `<script>` element.
+   */
+  async addScriptTag(
+    options: FrameAddScriptTagOptions
+  ): Promise<ElementHandle<HTMLScriptElement>> {
+    return this.mainFrame().addScriptTag(options);
+  }
+
+  /**
+   * Adds a `<link rel="stylesheet">` tag into the page with the desired URL or
+   * a `<style type="text/css">` tag with the content.
+   *
+   * Shortcut for
+   * {@link Frame.addStyleTag | page.mainFrame().addStyleTag(options)}.
+   *
+   * @returns An {@link ElementHandle | element handle} to the injected `<link>`
+   * or `<style>` element.
+   */
+  async addStyleTag(
+    options: Omit<FrameAddStyleTagOptions, 'url'>
+  ): Promise<ElementHandle<HTMLStyleElement>>;
+  async addStyleTag(
+    options: FrameAddStyleTagOptions
+  ): Promise<ElementHandle<HTMLLinkElement>>;
+  async addStyleTag(
+    options: FrameAddStyleTagOptions
+  ): Promise<ElementHandle<HTMLStyleElement | HTMLLinkElement>> {
+    return this.mainFrame().addStyleTag(options);
+  }
+
+  /**
+   * The method adds a function called `name` on the page's `window` object.
+   * When called, the function executes `puppeteerFunction` in node.js and
+   * returns a `Promise` which resolves to the return value of
+   * `puppeteerFunction`.
+   *
+   * If the puppeteerFunction returns a `Promise`, it will be awaited.
+   *
+   * :::note
+   *
+   * Functions installed via `page.exposeFunction` survive navigations.
+   *
+   * :::note
+   *
+   * @example
+   * An example of adding an `md5` function into the page:
+   *
+   * ```ts
+   * const puppeteer = require('puppeteer');
+   * const crypto = require('crypto');
+   *
+   * (async () => {
+   *   const browser = await puppeteer.launch();
+   *   const page = await browser.newPage();
+   *   page.on('console', msg => console.log(msg.text()));
+   *   await page.exposeFunction('md5', text =>
+   *     crypto.createHash('md5').update(text).digest('hex')
+   *   );
+   *   await page.evaluate(async () => {
+   *     // use window.md5 to compute hashes
+   *     const myString = 'PUPPETEER';
+   *     const myHash = await window.md5(myString);
+   *     console.log(`md5 of ${myString} is ${myHash}`);
+   *   });
+   *   await browser.close();
+   * })();
+   * ```
+   *
+   * @example
+   * An example of adding a `window.readfile` function into the page:
+   *
+   * ```ts
+   * const puppeteer = require('puppeteer');
+   * const fs = require('fs');
+   *
+   * (async () => {
+   *   const browser = await puppeteer.launch();
+   *   const page = await browser.newPage();
+   *   page.on('console', msg => console.log(msg.text()));
+   *   await page.exposeFunction('readfile', async filePath => {
+   *     return new Promise((resolve, reject) => {
+   *       fs.readFile(filePath, 'utf8', (err, text) => {
+   *         if (err) reject(err);
+   *         else resolve(text);
+   *       });
+   *     });
+   *   });
+   *   await page.evaluate(async () => {
+   *     // use window.readfile to read contents of a file
+   *     const content = await window.readfile('/etc/hosts');
+   *     console.log(content);
+   *   });
+   *   await browser.close();
+   * })();
+   * ```
+   *
+   * @param name - Name of the function on the window object
+   * @param pptrFunction - Callback function which will be called in Puppeteer's
+   * context.
+   */
+  async exposeFunction(
+    name: string,
+    pptrFunction: Function | {default: Function}
+  ): Promise<void> {
+    if (this.#pageBindings.has(name)) {
+      throw new Error(
+        `Failed to add page binding with name ${name}: window['${name}'] already exists!`
+      );
+    }
+
+    let exposedFunction: Function;
+    switch (typeof pptrFunction) {
+      case 'function':
+        exposedFunction = pptrFunction;
+        break;
+      default:
+        exposedFunction = pptrFunction.default;
+        break;
+    }
+
+    this.#pageBindings.set(name, exposedFunction);
+
+    const expression = pageBindingInitString('exposedFun', name);
+    await this.#client.send('Runtime.addBinding', {name: name});
+    await this.#client.send('Page.addScriptToEvaluateOnNewDocument', {
+      source: expression,
+    });
+    await Promise.all(
+      this.frames().map(frame => {
+        return frame.evaluate(expression).catch(debugError);
+      })
+    );
+  }
+
+  /**
+   * Provide credentials for `HTTP authentication`.
+   *
+   * @remarks
+   * To disable authentication, pass `null`.
+   */
+  async authenticate(credentials: Credentials): Promise<void> {
+    return this.#frameManager.networkManager.authenticate(credentials);
+  }
+
+  /**
+   * The extra HTTP headers will be sent with every request the page initiates.
+   *
+   * :::tip
+   *
+   * All HTTP header names are lowercased. (HTTP headers are
+   * case-insensitive, so this shouldn’t impact your server code.)
+   *
+   * :::
+   *
+   * :::note
+   *
+   * page.setExtraHTTPHeaders does not guarantee the order of headers in
+   * the outgoing requests.
+   *
+   * :::
+   *
+   * @param headers - An object containing additional HTTP headers to be sent
+   * with every request. All header values must be strings.
+   */
+  async setExtraHTTPHeaders(headers: Record<string, string>): Promise<void> {
+    return this.#frameManager.networkManager.setExtraHTTPHeaders(headers);
+  }
+
+  /**
+   * @param userAgent - Specific user agent to use in this page
+   * @param userAgentData - Specific user agent client hint data to use in this
+   * page
+   * @returns Promise which resolves when the user agent is set.
+   */
+  async setUserAgent(
+    userAgent: string,
+    userAgentMetadata?: Protocol.Emulation.UserAgentMetadata
+  ): Promise<void> {
+    return this.#frameManager.networkManager.setUserAgent(
+      userAgent,
+      userAgentMetadata
+    );
+  }
+
+  /**
+   * @returns Object containing metrics as key/value pairs.
+   *
+   * - `Timestamp` : The timestamp when the metrics sample was taken.
+   *
+   * - `Documents` : Number of documents in the page.
+   *
+   * - `Frames` : Number of frames in the page.
+   *
+   * - `JSEventListeners` : Number of events in the page.
+   *
+   * - `Nodes` : Number of DOM nodes in the page.
+   *
+   * - `LayoutCount` : Total number of full or partial page layout.
+   *
+   * - `RecalcStyleCount` : Total number of page style recalculations.
+   *
+   * - `LayoutDuration` : Combined durations of all page layouts.
+   *
+   * - `RecalcStyleDuration` : Combined duration of all page style
+   *   recalculations.
+   *
+   * - `ScriptDuration` : Combined duration of JavaScript execution.
+   *
+   * - `TaskDuration` : Combined duration of all tasks performed by the browser.
+   *
+   * - `JSHeapUsedSize` : Used JavaScript heap size.
+   *
+   * - `JSHeapTotalSize` : Total JavaScript heap size.
+   *
+   * @remarks
+   * All timestamps are in monotonic time: monotonically increasing time
+   * in seconds since an arbitrary point in the past.
+   */
+  async metrics(): Promise<Metrics> {
+    const response = await this.#client.send('Performance.getMetrics');
+    return this.#buildMetricsObject(response.metrics);
+  }
+
+  #emitMetrics(event: Protocol.Performance.MetricsEvent): void {
+    this.emit(PageEmittedEvents.Metrics, {
+      title: event.title,
+      metrics: this.#buildMetricsObject(event.metrics),
+    });
+  }
+
+  #buildMetricsObject(metrics?: Protocol.Performance.Metric[]): Metrics {
+    const result: Record<
+      Protocol.Performance.Metric['name'],
+      Protocol.Performance.Metric['value']
+    > = {};
+    for (const metric of metrics || []) {
+      if (supportedMetrics.has(metric.name)) {
+        result[metric.name] = metric.value;
+      }
+    }
+    return result;
+  }
+
+  #handleException(exceptionDetails: Protocol.Runtime.ExceptionDetails): void {
+    const message = getExceptionMessage(exceptionDetails);
+    const err = new Error(message);
+    err.stack = ''; // Don't report clientside error with a node stack attached
+    this.emit(PageEmittedEvents.PageError, err);
+  }
+
+  async #onConsoleAPI(
+    event: Protocol.Runtime.ConsoleAPICalledEvent
+  ): Promise<void> {
+    if (event.executionContextId === 0) {
+      // DevTools protocol stores the last 1000 console messages. These
+      // messages are always reported even for removed execution contexts. In
+      // this case, they are marked with executionContextId = 0 and are
+      // reported upon enabling Runtime agent.
+      //
+      // Ignore these messages since:
+      // - there's no execution context we can use to operate with message
+      //   arguments
+      // - these messages are reported before Puppeteer clients can subscribe
+      //   to the 'console'
+      //   page event.
+      //
+      // @see https://github.com/puppeteer/puppeteer/issues/3865
+      return;
+    }
+    const context = this.#frameManager.executionContextById(
+      event.executionContextId,
+      this.#client
+    );
+    const values = event.args.map(arg => {
+      return createJSHandle(context, arg);
+    });
+    this.#addConsoleMessage(event.type, values, event.stackTrace);
+  }
+
+  async #onBindingCalled(
+    event: Protocol.Runtime.BindingCalledEvent
+  ): Promise<void> {
+    let payload: {type: string; name: string; seq: number; args: unknown[]};
+    try {
+      payload = JSON.parse(event.payload);
+    } catch {
+      // The binding was either called by something in the page or it was
+      // called before our wrapper was initialized.
+      return;
+    }
+    const {type, name, seq, args} = payload;
+    if (type !== 'exposedFun' || !this.#pageBindings.has(name)) {
+      return;
+    }
+    let expression = null;
+    try {
+      const pageBinding = this.#pageBindings.get(name);
+      assert(pageBinding);
+      const result = await pageBinding(...args);
+      expression = pageBindingDeliverResultString(name, seq, result);
+    } catch (error) {
+      if (isErrorLike(error)) {
+        expression = pageBindingDeliverErrorString(
+          name,
+          seq,
+          error.message,
+          error.stack
+        );
+      } else {
+        expression = pageBindingDeliverErrorValueString(name, seq, error);
+      }
+    }
+    this.#client
+      .send('Runtime.evaluate', {
+        expression,
+        contextId: event.executionContextId,
+      })
+      .catch(debugError);
+  }
+
+  #addConsoleMessage(
+    eventType: ConsoleMessageType,
+    args: JSHandle[],
+    stackTrace?: Protocol.Runtime.StackTrace
+  ): void {
+    if (!this.listenerCount(PageEmittedEvents.Console)) {
+      args.forEach(arg => {
+        return arg.dispose();
+      });
+      return;
+    }
+    const textTokens = [];
+    for (const arg of args) {
+      const remoteObject = arg.remoteObject();
+      if (remoteObject.objectId) {
+        textTokens.push(arg.toString());
+      } else {
+        textTokens.push(valueFromRemoteObject(remoteObject));
+      }
+    }
+    const stackTraceLocations = [];
+    if (stackTrace) {
+      for (const callFrame of stackTrace.callFrames) {
+        stackTraceLocations.push({
+          url: callFrame.url,
+          lineNumber: callFrame.lineNumber,
+          columnNumber: callFrame.columnNumber,
+        });
+      }
+    }
+    const message = new ConsoleMessage(
+      eventType,
+      textTokens.join(' '),
+      args,
+      stackTraceLocations
+    );
+    this.emit(PageEmittedEvents.Console, message);
+  }
+
+  #onDialog(event: Protocol.Page.JavascriptDialogOpeningEvent): void {
+    let dialogType = null;
+    const validDialogTypes = new Set<Protocol.Page.DialogType>([
+      'alert',
+      'confirm',
+      'prompt',
+      'beforeunload',
+    ]);
+
+    if (validDialogTypes.has(event.type)) {
+      dialogType = event.type as Protocol.Page.DialogType;
+    }
+    assert(dialogType, 'Unknown javascript dialog type: ' + event.type);
+
+    const dialog = new Dialog(
+      this.#client,
+      dialogType,
+      event.message,
+      event.defaultPrompt
+    );
+    this.emit(PageEmittedEvents.Dialog, dialog);
+  }
+
+  /**
+   * Resets default white background
+   */
+  async #resetDefaultBackgroundColor() {
+    await this.#client.send('Emulation.setDefaultBackgroundColorOverride');
+  }
+
+  /**
+   * Hides default white background
+   */
+  async #setTransparentBackgroundColor(): Promise<void> {
+    await this.#client.send('Emulation.setDefaultBackgroundColorOverride', {
+      color: {r: 0, g: 0, b: 0, a: 0},
+    });
+  }
+
+  /**
+   *
+   * @returns
+   * @remarks Shortcut for
+   * {@link Frame.url | page.mainFrame().url()}.
+   */
+  url(): string {
+    return this.mainFrame().url();
+  }
+
+  async content(): Promise<string> {
+    return await this.#frameManager.mainFrame().content();
+  }
+
+  /**
+   * @param html - HTML markup to assign to the page.
+   * @param options - Parameters that has some properties.
+   * @remarks
+   * The parameter `options` might have the following options.
+   *
+   * - `timeout` : Maximum time in milliseconds for resources to load, defaults
+   *   to 30 seconds, pass `0` to disable timeout. The default value can be
+   *   changed by using the {@link Page.setDefaultNavigationTimeout} or
+   *   {@link Page.setDefaultTimeout} methods.
+   *
+   * - `waitUntil`: When to consider setting markup succeeded, defaults to
+   *   `load`. Given an array of event strings, setting content is considered
+   *   to be successful after all events have been fired. Events can be
+   *   either:<br/>
+   * - `load` : consider setting content to be finished when the `load` event
+   *   is fired.<br/>
+   * - `domcontentloaded` : consider setting content to be finished when the
+   *   `DOMContentLoaded` event is fired.<br/>
+   * - `networkidle0` : consider setting content to be finished when there are
+   *   no more than 0 network connections for at least `500` ms.<br/>
+   * - `networkidle2` : consider setting content to be finished when there are
+   *   no more than 2 network connections for at least `500` ms.
+   */
+  async setContent(html: string, options: WaitForOptions = {}): Promise<void> {
+    await this.#frameManager.mainFrame().setContent(html, options);
+  }
+
+  /**
+   * @param url - URL to navigate page to. The URL should include scheme, e.g.
+   * `https://`
+   * @param options - Navigation Parameter
+   * @returns Promise which resolves to the main resource response. In case of
+   * multiple redirects, the navigation will resolve with the response of the
+   * last redirect.
+   * @remarks
+   * The argument `options` might have the following properties:
+   *
+   * - `timeout` : Maximum navigation time in milliseconds, defaults to 30
+   *   seconds, pass 0 to disable timeout. The default value can be changed by
+   *   using the {@link Page.setDefaultNavigationTimeout} or
+   *   {@link Page.setDefaultTimeout} methods.
+   *
+   * - `waitUntil`:When to consider navigation succeeded, defaults to `load`.
+   *   Given an array of event strings, navigation is considered to be
+   *   successful after all events have been fired. Events can be either:<br/>
+   * - `load` : consider navigation to be finished when the load event is
+   *   fired.<br/>
+   * - `domcontentloaded` : consider navigation to be finished when the
+   *   DOMContentLoaded event is fired.<br/>
+   * - `networkidle0` : consider navigation to be finished when there are no
+   *   more than 0 network connections for at least `500` ms.<br/>
+   * - `networkidle2` : consider navigation to be finished when there are no
+   *   more than 2 network connections for at least `500` ms.
+   *
+   * - `referer` : Referer header value. If provided it will take preference
+   *   over the referer header value set by
+   *   {@link Page.setExtraHTTPHeaders |page.setExtraHTTPHeaders()}.
+   *
+   * `page.goto` will throw an error if:
+   *
+   * - there's an SSL error (e.g. in case of self-signed certificates).
+   * - target URL is invalid.
+   * - the timeout is exceeded during navigation.
+   * - the remote server does not respond or is unreachable.
+   * - the main resource failed to load.
+   *
+   * `page.goto` will not throw an error when any valid HTTP status code is
+   * returned by the remote server, including 404 "Not Found" and 500
+   * "Internal Server Error". The status code for such responses can be
+   * retrieved by calling response.status().
+   *
+   * NOTE: `page.goto` either throws an error or returns a main resource
+   * response. The only exceptions are navigation to about:blank or navigation
+   * to the same URL with a different hash, which would succeed and return null.
+   *
+   * NOTE: Headless mode doesn't support navigation to a PDF document. See the
+   * {@link https://bugs.chromium.org/p/chromium/issues/detail?id=761295 |
+   * upstream issue}.
+   *
+   * Shortcut for {@link Frame.goto | page.mainFrame().goto(url, options)}.
+   */
+  async goto(
+    url: string,
+    options: WaitForOptions & {referer?: string} = {}
+  ): Promise<HTTPResponse | null> {
+    return await this.#frameManager.mainFrame().goto(url, options);
+  }
+
+  /**
+   * @param options - Navigation parameters which might have the following
+   * properties:
+   * @returns Promise which resolves to the main resource response. In case of
+   * multiple redirects, the navigation will resolve with the response of the
+   * last redirect.
+   * @remarks
+   * The argument `options` might have the following properties:
+   *
+   * - `timeout` : Maximum navigation time in milliseconds, defaults to 30
+   *   seconds, pass 0 to disable timeout. The default value can be changed by
+   *   using the {@link Page.setDefaultNavigationTimeout} or
+   *   {@link Page.setDefaultTimeout} methods.
+   *
+   * - `waitUntil`: When to consider navigation succeeded, defaults to `load`.
+   *   Given an array of event strings, navigation is considered to be
+   *   successful after all events have been fired. Events can be either:<br/>
+   * - `load` : consider navigation to be finished when the load event is
+   *   fired.<br/>
+   * - `domcontentloaded` : consider navigation to be finished when the
+   *   DOMContentLoaded event is fired.<br/>
+   * - `networkidle0` : consider navigation to be finished when there are no
+   *   more than 0 network connections for at least `500` ms.<br/>
+   * - `networkidle2` : consider navigation to be finished when there are no
+   *   more than 2 network connections for at least `500` ms.
+   */
+  async reload(options?: WaitForOptions): Promise<HTTPResponse | null> {
+    const result = await Promise.all([
+      this.waitForNavigation(options),
+      this.#client.send('Page.reload'),
+    ]);
+
+    return result[0];
+  }
+
+  /**
+   * Waits for the page to navigate to a new URL or to reload. It is useful when
+   * you run code that will indirectly cause the page to navigate.
+   *
+   * @example
+   *
+   * ```ts
+   * const [response] = await Promise.all([
+   *   page.waitForNavigation(), // The promise resolves after navigation has finished
+   *   page.click('a.my-link'), // Clicking the link will indirectly cause a navigation
+   * ]);
+   * ```
+   *
+   * @remarks
+   * Usage of the
+   * {@link https://developer.mozilla.org/en-US/docs/Web/API/History_API | History API}
+   * to change the URL is considered a navigation.
+   *
+   * @param options - Navigation parameters which might have the following
+   * properties:
+   * @returns A `Promise` which resolves to the main resource response.
+   *
+   * - In case of multiple redirects, the navigation will resolve with the
+   *   response of the last redirect.
+   * - In case of navigation to a different anchor or navigation due to History
+   *   API usage, the navigation will resolve with `null`.
+   */
+  async waitForNavigation(
+    options: WaitForOptions = {}
+  ): Promise<HTTPResponse | null> {
+    return await this.#frameManager.mainFrame().waitForNavigation(options);
+  }
+
+  #sessionClosePromise(): Promise<Error> {
+    if (!this.#disconnectPromise) {
+      this.#disconnectPromise = new Promise(fulfill => {
+        return this.#client.once(CDPSessionEmittedEvents.Disconnected, () => {
+          return fulfill(new Error('Target closed'));
+        });
+      });
+    }
+    return this.#disconnectPromise;
+  }
+
+  /**
+   * @param urlOrPredicate - A URL or predicate to wait for
+   * @param options - Optional waiting parameters
+   * @returns Promise which resolves to the matched response
+   * @example
+   *
+   * ```ts
+   * const firstResponse = await page.waitForResponse(
+   *   'https://example.com/resource'
+   * );
+   * const finalResponse = await page.waitForResponse(
+   *   response =>
+   *     response.url() === 'https://example.com' && response.status() === 200
+   * );
+   * const finalResponse = await page.waitForResponse(async response => {
+   *   return (await response.text()).includes('<html>');
+   * });
+   * return finalResponse.ok();
+   * ```
+   *
+   * @remarks
+   * Optional Waiting Parameters have:
+   *
+   * - `timeout`: Maximum wait time in milliseconds, defaults to `30` seconds, pass
+   *   `0` to disable the timeout. The default value can be changed by using the
+   *   {@link Page.setDefaultTimeout} method.
+   */
+  async waitForRequest(
+    urlOrPredicate: string | ((req: HTTPRequest) => boolean | Promise<boolean>),
+    options: {timeout?: number} = {}
+  ): Promise<HTTPRequest> {
+    const {timeout = this.#timeoutSettings.timeout()} = options;
+    return waitForEvent(
+      this.#frameManager.networkManager,
+      NetworkManagerEmittedEvents.Request,
+      request => {
+        if (isString(urlOrPredicate)) {
+          return urlOrPredicate === request.url();
+        }
+        if (typeof urlOrPredicate === 'function') {
+          return !!urlOrPredicate(request);
+        }
+        return false;
+      },
+      timeout,
+      this.#sessionClosePromise()
+    );
+  }
+
+  /**
+   * @param urlOrPredicate - A URL or predicate to wait for.
+   * @param options - Optional waiting parameters
+   * @returns Promise which resolves to the matched response.
+   * @example
+   *
+   * ```ts
+   * const firstResponse = await page.waitForResponse(
+   *   'https://example.com/resource'
+   * );
+   * const finalResponse = await page.waitForResponse(
+   *   response =>
+   *     response.url() === 'https://example.com' && response.status() === 200
+   * );
+   * const finalResponse = await page.waitForResponse(async response => {
+   *   return (await response.text()).includes('<html>');
+   * });
+   * return finalResponse.ok();
+   * ```
+   *
+   * @remarks
+   * Optional Parameter have:
+   *
+   * - `timeout`: Maximum wait time in milliseconds, defaults to `30` seconds,
+   *   pass `0` to disable the timeout. The default value can be changed by using
+   *   the {@link Page.setDefaultTimeout} method.
+   */
+  async waitForResponse(
+    urlOrPredicate:
+      | string
+      | ((res: HTTPResponse) => boolean | Promise<boolean>),
+    options: {timeout?: number} = {}
+  ): Promise<HTTPResponse> {
+    const {timeout = this.#timeoutSettings.timeout()} = options;
+    return waitForEvent(
+      this.#frameManager.networkManager,
+      NetworkManagerEmittedEvents.Response,
+      async response => {
+        if (isString(urlOrPredicate)) {
+          return urlOrPredicate === response.url();
+        }
+        if (typeof urlOrPredicate === 'function') {
+          return !!(await urlOrPredicate(response));
+        }
+        return false;
+      },
+      timeout,
+      this.#sessionClosePromise()
+    );
+  }
+
+  /**
+   * @param options - Optional waiting parameters
+   * @returns Promise which resolves when network is idle
+   */
+  async waitForNetworkIdle(
+    options: {idleTime?: number; timeout?: number} = {}
+  ): Promise<void> {
+    const {idleTime = 500, timeout = this.#timeoutSettings.timeout()} = options;
+
+    const networkManager = this.#frameManager.networkManager;
+
+    let idleResolveCallback: () => void;
+    const idlePromise = new Promise<void>(resolve => {
+      idleResolveCallback = resolve;
+    });
+
+    let abortRejectCallback: (error: Error) => void;
+    const abortPromise = new Promise<Error>((_, reject) => {
+      abortRejectCallback = reject;
+    });
+
+    let idleTimer: NodeJS.Timeout;
+    const onIdle = () => {
+      return idleResolveCallback();
+    };
+
+    const cleanup = () => {
+      idleTimer && clearTimeout(idleTimer);
+      abortRejectCallback(new Error('abort'));
+    };
+
+    const evaluate = () => {
+      idleTimer && clearTimeout(idleTimer);
+      if (networkManager.numRequestsInProgress() === 0) {
+        idleTimer = setTimeout(onIdle, idleTime);
+      }
+    };
+
+    evaluate();
+
+    const eventHandler = () => {
+      evaluate();
+      return false;
+    };
+
+    const listenToEvent = (event: symbol) => {
+      return waitForEvent(
+        networkManager,
+        event,
+        eventHandler,
+        timeout,
+        abortPromise
+      );
+    };
+
+    const eventPromises = [
+      listenToEvent(NetworkManagerEmittedEvents.Request),
+      listenToEvent(NetworkManagerEmittedEvents.Response),
+    ];
+
+    await Promise.race([
+      idlePromise,
+      ...eventPromises,
+      this.#sessionClosePromise(),
+    ]).then(
+      r => {
+        cleanup();
+        return r;
+      },
+      error => {
+        cleanup();
+        throw error;
+      }
+    );
+  }
+
+  /**
+   * @param urlOrPredicate - A URL or predicate to wait for.
+   * @param options - Optional waiting parameters
+   * @returns Promise which resolves to the matched frame.
+   * @example
+   *
+   * ```ts
+   * const frame = await page.waitForFrame(async frame => {
+   *   return frame.name() === 'Test';
+   * });
+   * ```
+   *
+   * @remarks
+   * Optional Parameter have:
+   *
+   * - `timeout`: Maximum wait time in milliseconds, defaults to `30` seconds,
+   *   pass `0` to disable the timeout. The default value can be changed by using
+   *   the {@link Page.setDefaultTimeout} method.
+   */
+  async waitForFrame(
+    urlOrPredicate: string | ((frame: Frame) => boolean | Promise<boolean>),
+    options: {timeout?: number} = {}
+  ): Promise<Frame> {
+    const {timeout = this.#timeoutSettings.timeout()} = options;
+
+    let predicate: (frame: Frame) => Promise<boolean>;
+    if (isString(urlOrPredicate)) {
+      predicate = (frame: Frame) => {
+        return Promise.resolve(urlOrPredicate === frame.url());
+      };
+    } else {
+      predicate = (frame: Frame) => {
+        const value = urlOrPredicate(frame);
+        if (typeof value === 'boolean') {
+          return Promise.resolve(value);
+        }
+        return value;
+      };
+    }
+
+    const eventRace: Promise<Frame> = Promise.race([
+      waitForEvent(
+        this.#frameManager,
+        FrameManagerEmittedEvents.FrameAttached,
+        predicate,
+        timeout,
+        this.#sessionClosePromise()
+      ),
+      waitForEvent(
+        this.#frameManager,
+        FrameManagerEmittedEvents.FrameNavigated,
+        predicate,
+        timeout,
+        this.#sessionClosePromise()
+      ),
+      ...this.frames().map(async frame => {
+        if (await predicate(frame)) {
+          return frame;
+        }
+        return await eventRace;
+      }),
+    ]);
+
+    return eventRace;
+  }
+
+  /**
+   * This method navigate to the previous page in history.
+   * @param options - Navigation parameters
+   * @returns Promise which resolves to the main resource response. In case of
+   * multiple redirects, the navigation will resolve with the response of the
+   * last redirect. If can not go back, resolves to `null`.
+   * @remarks
+   * The argument `options` might have the following properties:
+   *
+   * - `timeout` : Maximum navigation time in milliseconds, defaults to 30
+   *   seconds, pass 0 to disable timeout. The default value can be changed by
+   *   using the {@link Page.setDefaultNavigationTimeout} or
+   *   {@link Page.setDefaultTimeout} methods.
+   *
+   * - `waitUntil` : When to consider navigation succeeded, defaults to `load`.
+   *   Given an array of event strings, navigation is considered to be
+   *   successful after all events have been fired. Events can be either:<br/>
+   * - `load` : consider navigation to be finished when the load event is
+   *   fired.<br/>
+   * - `domcontentloaded` : consider navigation to be finished when the
+   *   DOMContentLoaded event is fired.<br/>
+   * - `networkidle0` : consider navigation to be finished when there are no
+   *   more than 0 network connections for at least `500` ms.<br/>
+   * - `networkidle2` : consider navigation to be finished when there are no
+   *   more than 2 network connections for at least `500` ms.
+   */
+  async goBack(options: WaitForOptions = {}): Promise<HTTPResponse | null> {
+    return this.#go(-1, options);
+  }
+
+  /**
+   * This method navigate to the next page in history.
+   * @param options - Navigation Parameter
+   * @returns Promise which resolves to the main resource response. In case of
+   * multiple redirects, the navigation will resolve with the response of the
+   * last redirect. If can not go forward, resolves to `null`.
+   * @remarks
+   * The argument `options` might have the following properties:
+   *
+   * - `timeout` : Maximum navigation time in milliseconds, defaults to 30
+   *   seconds, pass 0 to disable timeout. The default value can be changed by
+   *   using the {@link Page.setDefaultNavigationTimeout} or
+   *   {@link Page.setDefaultTimeout} methods.
+   *
+   * - `waitUntil`: When to consider navigation succeeded, defaults to `load`.
+   *   Given an array of event strings, navigation is considered to be
+   *   successful after all events have been fired. Events can be either:<br/>
+   * - `load` : consider navigation to be finished when the load event is
+   *   fired.<br/>
+   * - `domcontentloaded` : consider navigation to be finished when the
+   *   DOMContentLoaded event is fired.<br/>
+   * - `networkidle0` : consider navigation to be finished when there are no
+   *   more than 0 network connections for at least `500` ms.<br/>
+   * - `networkidle2` : consider navigation to be finished when there are no
+   *   more than 2 network connections for at least `500` ms.
+   */
+  async goForward(options: WaitForOptions = {}): Promise<HTTPResponse | null> {
+    return this.#go(+1, options);
+  }
+
+  async #go(
+    delta: number,
+    options: WaitForOptions
+  ): Promise<HTTPResponse | null> {
+    const history = await this.#client.send('Page.getNavigationHistory');
+    const entry = history.entries[history.currentIndex + delta];
+    if (!entry) {
+      return null;
+    }
+    const result = await Promise.all([
+      this.waitForNavigation(options),
+      this.#client.send('Page.navigateToHistoryEntry', {entryId: entry.id}),
+    ]);
+    return result[0];
+  }
+
+  /**
+   * Brings page to front (activates tab).
+   */
+  async bringToFront(): Promise<void> {
+    await this.#client.send('Page.bringToFront');
+  }
+
+  /**
+   * Emulates given device metrics and user agent.
+   *
+   * @remarks
+   * This method is a shortcut for calling two methods:
+   * {@link Page.setUserAgent} and {@link Page.setViewport} To aid emulation,
+   * Puppeteer provides a list of device descriptors that can be obtained via
+   * {@link devices}. `page.emulate` will resize the page. A lot of websites
+   * don't expect phones to change size, so you should emulate before navigating
+   * to the page.
+   * @example
+   *
+   * ```ts
+   * const puppeteer = require('puppeteer');
+   * const iPhone = puppeteer.devices['iPhone 6'];
+   * (async () => {
+   *   const browser = await puppeteer.launch();
+   *   const page = await browser.newPage();
+   *   await page.emulate(iPhone);
+   *   await page.goto('https://www.google.com');
+   *   // other actions...
+   *   await browser.close();
+   * })();
+   * ```
+   *
+   * @remarks List of all available devices is available in the source code:
+   * {@link https://github.com/puppeteer/puppeteer/blob/main/src/common/DeviceDescriptors.ts | src/common/DeviceDescriptors.ts}.
+   */
+  async emulate(options: {
+    viewport: Viewport;
+    userAgent: string;
+  }): Promise<void> {
+    await Promise.all([
+      this.setViewport(options.viewport),
+      this.setUserAgent(options.userAgent),
+    ]);
+  }
+
+  /**
+   * @param enabled - Whether or not to enable JavaScript on the page.
+   * @returns
+   * @remarks
+   * NOTE: changing this value won't affect scripts that have already been run.
+   * It will take full effect on the next navigation.
+   */
+  async setJavaScriptEnabled(enabled: boolean): Promise<void> {
+    if (this.#javascriptEnabled === enabled) {
+      return;
+    }
+    this.#javascriptEnabled = enabled;
+    await this.#client.send('Emulation.setScriptExecutionDisabled', {
+      value: !enabled,
+    });
+  }
+
+  /**
+   * Toggles bypassing page's Content-Security-Policy.
+   * @param enabled - sets bypassing of page's Content-Security-Policy.
+   * @remarks
+   * NOTE: CSP bypassing happens at the moment of CSP initialization rather than
+   * evaluation. Usually, this means that `page.setBypassCSP` should be called
+   * before navigating to the domain.
+   */
+  async setBypassCSP(enabled: boolean): Promise<void> {
+    await this.#client.send('Page.setBypassCSP', {enabled});
+  }
+
+  /**
+   * @param type - Changes the CSS media type of the page. The only allowed
+   * values are `screen`, `print` and `null`. Passing `null` disables CSS media
+   * emulation.
+   * @example
+   *
+   * ```ts
+   * await page.evaluate(() => matchMedia('screen').matches);
+   * // → true
+   * await page.evaluate(() => matchMedia('print').matches);
+   * // → false
+   *
+   * await page.emulateMediaType('print');
+   * await page.evaluate(() => matchMedia('screen').matches);
+   * // → false
+   * await page.evaluate(() => matchMedia('print').matches);
+   * // → true
+   *
+   * await page.emulateMediaType(null);
+   * await page.evaluate(() => matchMedia('screen').matches);
+   * // → true
+   * await page.evaluate(() => matchMedia('print').matches);
+   * // → false
+   * ```
+   */
+  async emulateMediaType(type?: string): Promise<void> {
+    assert(
+      type === 'screen' ||
+        type === 'print' ||
+        (type ?? undefined) === undefined,
+      'Unsupported media type: ' + type
+    );
+    await this.#client.send('Emulation.setEmulatedMedia', {
+      media: type || '',
+    });
+  }
+
+  /**
+   * Enables CPU throttling to emulate slow CPUs.
+   * @param factor - slowdown factor (1 is no throttle, 2 is 2x slowdown, etc).
+   */
+  async emulateCPUThrottling(factor: number | null): Promise<void> {
+    assert(
+      factor === null || factor >= 1,
+      'Throttling rate should be greater or equal to 1'
+    );
+    await this.#client.send('Emulation.setCPUThrottlingRate', {
+      rate: factor !== null ? factor : 1,
+    });
+  }
+
+  /**
+   * @param features - `<?Array<Object>>` Given an array of media feature
+   * objects, emulates CSS media features on the page. Each media feature object
+   * must have the following properties:
+   * @example
+   *
+   * ```ts
+   * await page.emulateMediaFeatures([
+   *   {name: 'prefers-color-scheme', value: 'dark'},
+   * ]);
+   * await page.evaluate(
+   *   () => matchMedia('(prefers-color-scheme: dark)').matches
+   * );
+   * // → true
+   * await page.evaluate(
+   *   () => matchMedia('(prefers-color-scheme: light)').matches
+   * );
+   * // → false
+   *
+   * await page.emulateMediaFeatures([
+   *   {name: 'prefers-reduced-motion', value: 'reduce'},
+   * ]);
+   * await page.evaluate(
+   *   () => matchMedia('(prefers-reduced-motion: reduce)').matches
+   * );
+   * // → true
+   * await page.evaluate(
+   *   () => matchMedia('(prefers-reduced-motion: no-preference)').matches
+   * );
+   * // → false
+   *
+   * await page.emulateMediaFeatures([
+   *   {name: 'prefers-color-scheme', value: 'dark'},
+   *   {name: 'prefers-reduced-motion', value: 'reduce'},
+   * ]);
+   * await page.evaluate(
+   *   () => matchMedia('(prefers-color-scheme: dark)').matches
+   * );
+   * // → true
+   * await page.evaluate(
+   *   () => matchMedia('(prefers-color-scheme: light)').matches
+   * );
+   * // → false
+   * await page.evaluate(
+   *   () => matchMedia('(prefers-reduced-motion: reduce)').matches
+   * );
+   * // → true
+   * await page.evaluate(
+   *   () => matchMedia('(prefers-reduced-motion: no-preference)').matches
+   * );
+   * // → false
+   *
+   * await page.emulateMediaFeatures([{name: 'color-gamut', value: 'p3'}]);
+   * await page.evaluate(() => matchMedia('(color-gamut: srgb)').matches);
+   * // → true
+   * await page.evaluate(() => matchMedia('(color-gamut: p3)').matches);
+   * // → true
+   * await page.evaluate(() => matchMedia('(color-gamut: rec2020)').matches);
+   * // → false
+   * ```
+   */
+  async emulateMediaFeatures(features?: MediaFeature[]): Promise<void> {
+    if (!features) {
+      await this.#client.send('Emulation.setEmulatedMedia', {});
+    }
+    if (Array.isArray(features)) {
+      for (const mediaFeature of features) {
+        const name = mediaFeature.name;
+        assert(
+          /^(?:prefers-(?:color-scheme|reduced-motion)|color-gamut)$/.test(
+            name
+          ),
+          'Unsupported media feature: ' + name
+        );
+      }
+      await this.#client.send('Emulation.setEmulatedMedia', {
+        features: features,
+      });
+    }
+  }
+
+  /**
+   * @param timezoneId - Changes the timezone of the page. See
+   * {@link https://source.chromium.org/chromium/chromium/deps/icu.git/+/faee8bc70570192d82d2978a71e2a615788597d1:source/data/misc/metaZones.txt | ICU’s metaZones.txt}
+   * for a list of supported timezone IDs. Passing
+   * `null` disables timezone emulation.
+   */
+  async emulateTimezone(timezoneId?: string): Promise<void> {
+    try {
+      await this.#client.send('Emulation.setTimezoneOverride', {
+        timezoneId: timezoneId || '',
+      });
+    } catch (error) {
+      if (isErrorLike(error) && error.message.includes('Invalid timezone')) {
+        throw new Error(`Invalid timezone ID: ${timezoneId}`);
+      }
+      throw error;
+    }
+  }
+
+  /**
+   * Emulates the idle state.
+   * If no arguments set, clears idle state emulation.
+   *
+   * @example
+   *
+   * ```ts
+   * // set idle emulation
+   * await page.emulateIdleState({isUserActive: true, isScreenUnlocked: false});
+   *
+   * // do some checks here
+   * ...
+   *
+   * // clear idle emulation
+   * await page.emulateIdleState();
+   * ```
+   *
+   * @param overrides - Mock idle state. If not set, clears idle overrides
+   */
+  async emulateIdleState(overrides?: {
+    isUserActive: boolean;
+    isScreenUnlocked: boolean;
+  }): Promise<void> {
+    if (overrides) {
+      await this.#client.send('Emulation.setIdleOverride', {
+        isUserActive: overrides.isUserActive,
+        isScreenUnlocked: overrides.isScreenUnlocked,
+      });
+    } else {
+      await this.#client.send('Emulation.clearIdleOverride');
+    }
+  }
+
+  /**
+   * Simulates the given vision deficiency on the page.
+   *
+   * @example
+   *
+   * ```ts
+   * const puppeteer = require('puppeteer');
+   *
+   * (async () => {
+   *   const browser = await puppeteer.launch();
+   *   const page = await browser.newPage();
+   *   await page.goto('https://v8.dev/blog/10-years');
+   *
+   *   await page.emulateVisionDeficiency('achromatopsia');
+   *   await page.screenshot({path: 'achromatopsia.png'});
+   *
+   *   await page.emulateVisionDeficiency('deuteranopia');
+   *   await page.screenshot({path: 'deuteranopia.png'});
+   *
+   *   await page.emulateVisionDeficiency('blurredVision');
+   *   await page.screenshot({path: 'blurred-vision.png'});
+   *
+   *   await browser.close();
+   * })();
+   * ```
+   *
+   * @param type - the type of deficiency to simulate, or `'none'` to reset.
+   */
+  async emulateVisionDeficiency(
+    type?: Protocol.Emulation.SetEmulatedVisionDeficiencyRequest['type']
+  ): Promise<void> {
+    const visionDeficiencies = new Set<
+      Protocol.Emulation.SetEmulatedVisionDeficiencyRequest['type']
+    >([
+      'none',
+      'achromatopsia',
+      'blurredVision',
+      'deuteranopia',
+      'protanopia',
+      'tritanopia',
+    ]);
+    try {
+      assert(
+        !type || visionDeficiencies.has(type),
+        `Unsupported vision deficiency: ${type}`
+      );
+      await this.#client.send('Emulation.setEmulatedVisionDeficiency', {
+        type: type || 'none',
+      });
+    } catch (error) {
+      throw error;
+    }
+  }
+
+  /**
+   * `page.setViewport` will resize the page. A lot of websites don't expect
+   * phones to change size, so you should set the viewport before navigating to
+   * the page.
+   *
+   * In the case of multiple pages in a single browser, each page can have its
+   * own viewport size.
+   * @example
+   *
+   * ```ts
+   * const page = await browser.newPage();
+   * await page.setViewport({
+   *   width: 640,
+   *   height: 480,
+   *   deviceScaleFactor: 1,
+   * });
+   * await page.goto('https://example.com');
+   * ```
+   *
+   * @param viewport -
+   * @remarks
+   * Argument viewport have following properties:
+   *
+   * - `width`: page width in pixels. required
+   *
+   * - `height`: page height in pixels. required
+   *
+   * - `deviceScaleFactor`: Specify device scale factor (can be thought of as
+   *   DPR). Defaults to `1`.
+   *
+   * - `isMobile`: Whether the meta viewport tag is taken into account. Defaults
+   *   to `false`.
+   *
+   * - `hasTouch`: Specifies if viewport supports touch events. Defaults to `false`
+   *
+   * - `isLandScape`: Specifies if viewport is in landscape mode. Defaults to false.
+   *
+   * NOTE: in certain cases, setting viewport will reload the page in order to
+   * set the isMobile or hasTouch properties.
+   */
+  async setViewport(viewport: Viewport): Promise<void> {
+    const needsReload = await this.#emulationManager.emulateViewport(viewport);
+    this.#viewport = viewport;
+    if (needsReload) {
+      await this.reload();
+    }
+  }
+
+  /**
+   * @returns
+   *
+   * - `width`: page's width in pixels
+   *
+   * - `height`: page's height in pixels
+   *
+   * - `deviceScalarFactor`: Specify device scale factor (can be though of as
+   *   dpr). Defaults to `1`.
+   *
+   * - `isMobile`: Whether the meta viewport tag is taken into account. Defaults
+   *   to `false`.
+   *
+   * - `hasTouch`: Specifies if viewport supports touch events. Defaults to
+   *   `false`.
+   *
+   * - `isLandScape`: Specifies if viewport is in landscape mode. Defaults to
+   *   `false`.
+   */
+  viewport(): Viewport | null {
+    return this.#viewport;
+  }
+
+  /**
+   * Evaluates a function in the page's context and returns the result.
+   *
+   * If the function passed to `page.evaluteHandle` returns a Promise, the
+   * function will wait for the promise to resolve and return its value.
+   *
+   * @example
+   *
+   * ```ts
+   * const result = await frame.evaluate(() => {
+   *   return Promise.resolve(8 * 7);
+   * });
+   * console.log(result); // prints "56"
+   * ```
+   *
+   * You can pass a string instead of a function (although functions are
+   * recommended as they are easier to debug and use with TypeScript):
+   *
+   * @example
+   *
+   * ```ts
+   * const aHandle = await page.evaluate('1 + 2');
+   * ```
+   *
+   * To get the best TypeScript experience, you should pass in as the
+   * generic the type of `pageFunction`:
+   *
+   * ```ts
+   * const aHandle = await page.evaluate(() => 2);
+   * ```
+   *
+   * @example
+   *
+   * {@link ElementHandle} instances (including {@link JSHandle}s) can be passed
+   * as arguments to the `pageFunction`:
+   *
+   * ```ts
+   * const bodyHandle = await page.$('body');
+   * const html = await page.evaluate(body => body.innerHTML, bodyHandle);
+   * await bodyHandle.dispose();
+   * ```
+   *
+   * @param pageFunction - a function that is run within the page
+   * @param args - arguments to be passed to the pageFunction
+   *
+   * @returns the return value of `pageFunction`.
+   */
+  async evaluate<
+    Params extends unknown[],
+    Func extends EvaluateFunc<Params> = EvaluateFunc<Params>
+  >(
+    pageFunction: Func | string,
+    ...args: Params
+  ): Promise<Awaited<ReturnType<Func>>> {
+    return this.#frameManager.mainFrame().evaluate(pageFunction, ...args);
+  }
+
+  /**
+   * Adds a function which would be invoked in one of the following scenarios:
+   *
+   * - whenever the page is navigated
+   *
+   * - whenever the child frame is attached or navigated. In this case, the
+   *   function is invoked in the context of the newly attached frame.
+   *
+   * The function is invoked after the document was created but before any of
+   * its scripts were run. This is useful to amend the JavaScript environment,
+   * e.g. to seed `Math.random`.
+   * @param pageFunction - Function to be evaluated in browser context
+   * @param args - Arguments to pass to `pageFunction`
+   * @example
+   * An example of overriding the navigator.languages property before the page loads:
+   *
+   * ```ts
+   * // preload.js
+   *
+   * // overwrite the `languages` property to use a custom getter
+   * Object.defineProperty(navigator, 'languages', {
+   *   get: function () {
+   *     return ['en-US', 'en', 'bn'];
+   *   },
+   * });
+   *
+   * // In your puppeteer script, assuming the preload.js file is
+   * // in same folder of our script.
+   * const preloadFile = fs.readFileSync('./preload.js', 'utf8');
+   * await page.evaluateOnNewDocument(preloadFile);
+   * ```
+   */
+  async evaluateOnNewDocument<
+    Params extends unknown[],
+    Func extends (...args: Params) => unknown = (...args: Params) => unknown
+  >(pageFunction: Func | string, ...args: Params): Promise<void> {
+    const source = evaluationString(pageFunction, ...args);
+    await this.#client.send('Page.addScriptToEvaluateOnNewDocument', {
+      source,
+    });
+  }
+
+  /**
+   * Toggles ignoring cache for each request based on the enabled state. By
+   * default, caching is enabled.
+   * @param enabled - sets the `enabled` state of cache
+   */
+  async setCacheEnabled(enabled = true): Promise<void> {
+    await this.#frameManager.networkManager.setCacheEnabled(enabled);
+  }
+
+  /**
+   * @remarks
+   * Options object which might have the following properties:
+   *
+   * - `path` : The file path to save the image to. The screenshot type
+   *   will be inferred from file extension. If `path` is a relative path, then
+   *   it is resolved relative to
+   *   {@link https://nodejs.org/api/process.html#process_process_cwd
+   *   | current working directory}.
+   *   If no path is provided, the image won't be saved to the disk.
+   *
+   * - `type` : Specify screenshot type, can be either `jpeg` or `png`.
+   *   Defaults to 'png'.
+   *
+   * - `quality` : The quality of the image, between 0-100. Not
+   *   applicable to `png` images.
+   *
+   * - `fullPage` : When true, takes a screenshot of the full
+   *   scrollable page. Defaults to `false`.
+   *
+   * - `clip` : An object which specifies clipping region of the page.
+   *   Should have the following fields:<br/>
+   * - `x` : x-coordinate of top-left corner of clip area.<br/>
+   * - `y` : y-coordinate of top-left corner of clip area.<br/>
+   * - `width` : width of clipping area.<br/>
+   * - `height` : height of clipping area.
+   *
+   * - `omitBackground` : Hides default white background and allows
+   *   capturing screenshots with transparency. Defaults to `false`.
+   *
+   * - `encoding` : The encoding of the image, can be either base64 or
+   *   binary. Defaults to `binary`.
+   *
+   * - `captureBeyondViewport` : When true, captures screenshot
+   *   {@link https://chromedevtools.github.io/devtools-protocol/tot/Page/#method-captureScreenshot
+   *   | beyond the viewport}. When false, falls back to old behaviour,
+   *   and cuts the screenshot by the viewport size. Defaults to `true`.
+   *
+   * - `fromSurface` : When true, captures screenshot
+   *   {@link https://chromedevtools.github.io/devtools-protocol/tot/Page/#method-captureScreenshot
+   *   | from the surface rather than the view}. When false, works only in
+   *   headful mode and ignores page viewport (but not browser window's
+   *   bounds). Defaults to `true`.
+   *
+   * NOTE: Screenshots take at least 1/6 second on OS X. See
+   * {@link https://crbug.com/741689} for discussion.
+   * @returns Promise which resolves to buffer or a base64 string (depending on
+   * the value of `encoding`) with captured screenshot.
+   */
+  async screenshot(options: ScreenshotOptions = {}): Promise<Buffer | string> {
+    let screenshotType = Protocol.Page.CaptureScreenshotRequestFormat.Png;
+    // options.type takes precedence over inferring the type from options.path
+    // because it may be a 0-length file with no extension created beforehand
+    // (i.e. as a temp file).
+    if (options.type) {
+      screenshotType =
+        options.type as Protocol.Page.CaptureScreenshotRequestFormat;
+    } else if (options.path) {
+      const filePath = options.path;
+      const extension = filePath
+        .slice(filePath.lastIndexOf('.') + 1)
+        .toLowerCase();
+      switch (extension) {
+        case 'png':
+          screenshotType = Protocol.Page.CaptureScreenshotRequestFormat.Png;
+          break;
+        case 'jpeg':
+        case 'jpg':
+          screenshotType = Protocol.Page.CaptureScreenshotRequestFormat.Jpeg;
+          break;
+        case 'webp':
+          screenshotType = Protocol.Page.CaptureScreenshotRequestFormat.Webp;
+          break;
+        default:
+          throw new Error(
+            `Unsupported screenshot type for extension \`.${extension}\``
+          );
+      }
+    }
+
+    if (options.quality) {
+      assert(
+        screenshotType === Protocol.Page.CaptureScreenshotRequestFormat.Jpeg ||
+          screenshotType === Protocol.Page.CaptureScreenshotRequestFormat.Webp,
+        'options.quality is unsupported for the ' +
+          screenshotType +
+          ' screenshots'
+      );
+      assert(
+        typeof options.quality === 'number',
+        'Expected options.quality to be a number but found ' +
+          typeof options.quality
+      );
+      assert(
+        Number.isInteger(options.quality),
+        'Expected options.quality to be an integer'
+      );
+      assert(
+        options.quality >= 0 && options.quality <= 100,
+        'Expected options.quality to be between 0 and 100 (inclusive), got ' +
+          options.quality
+      );
+    }
+    assert(
+      !options.clip || !options.fullPage,
+      'options.clip and options.fullPage are exclusive'
+    );
+    if (options.clip) {
+      assert(
+        typeof options.clip.x === 'number',
+        'Expected options.clip.x to be a number but found ' +
+          typeof options.clip.x
+      );
+      assert(
+        typeof options.clip.y === 'number',
+        'Expected options.clip.y to be a number but found ' +
+          typeof options.clip.y
+      );
+      assert(
+        typeof options.clip.width === 'number',
+        'Expected options.clip.width to be a number but found ' +
+          typeof options.clip.width
+      );
+      assert(
+        typeof options.clip.height === 'number',
+        'Expected options.clip.height to be a number but found ' +
+          typeof options.clip.height
+      );
+      assert(
+        options.clip.width !== 0,
+        'Expected options.clip.width not to be 0.'
+      );
+      assert(
+        options.clip.height !== 0,
+        'Expected options.clip.height not to be 0.'
+      );
+    }
+    return this.#screenshotTaskQueue.postTask(() => {
+      return this.#screenshotTask(screenshotType, options);
+    });
+  }
+
+  async #screenshotTask(
+    format: Protocol.Page.CaptureScreenshotRequestFormat,
+    options: ScreenshotOptions = {}
+  ): Promise<Buffer | string> {
+    await this.#client.send('Target.activateTarget', {
+      targetId: this.#target._targetId,
+    });
+    let clip = options.clip ? processClip(options.clip) : undefined;
+    const captureBeyondViewport =
+      typeof options.captureBeyondViewport === 'boolean'
+        ? options.captureBeyondViewport
+        : true;
+    const fromSurface =
+      typeof options.fromSurface === 'boolean'
+        ? options.fromSurface
+        : undefined;
+
+    if (options.fullPage) {
+      const metrics = await this.#client.send('Page.getLayoutMetrics');
+      // Fallback to `contentSize` in case of using Firefox.
+      const {width, height} = metrics.cssContentSize || metrics.contentSize;
+
+      // Overwrite clip for full page.
+      clip = {x: 0, y: 0, width, height, scale: 1};
+
+      if (!captureBeyondViewport) {
+        const {
+          isMobile = false,
+          deviceScaleFactor = 1,
+          isLandscape = false,
+        } = this.#viewport || {};
+        const screenOrientation: Protocol.Emulation.ScreenOrientation =
+          isLandscape
+            ? {angle: 90, type: 'landscapePrimary'}
+            : {angle: 0, type: 'portraitPrimary'};
+        await this.#client.send('Emulation.setDeviceMetricsOverride', {
+          mobile: isMobile,
+          width,
+          height,
+          deviceScaleFactor,
+          screenOrientation,
+        });
+      }
+    }
+    const shouldSetDefaultBackground =
+      options.omitBackground && (format === 'png' || format === 'webp');
+    if (shouldSetDefaultBackground) {
+      await this.#setTransparentBackgroundColor();
+    }
+
+    const result = await this.#client.send('Page.captureScreenshot', {
+      format,
+      quality: options.quality,
+      clip: clip
+        ? {
+            ...clip,
+            scale: clip.scale === undefined ? 1 : clip.scale,
+          }
+        : undefined,
+      captureBeyondViewport,
+      fromSurface,
+    });
+    if (shouldSetDefaultBackground) {
+      await this.#resetDefaultBackgroundColor();
+    }
+
+    if (options.fullPage && this.#viewport) {
+      await this.setViewport(this.#viewport);
+    }
+
+    const buffer =
+      options.encoding === 'base64'
+        ? result.data
+        : Buffer.from(result.data, 'base64');
+
+    if (options.path) {
+      try {
+        const fs = (await importFS()).promises;
+        await fs.writeFile(options.path, buffer);
+      } catch (error) {
+        if (error instanceof TypeError) {
+          throw new Error(
+            'Screenshots can only be written to a file path in a Node-like environment.'
+          );
+        }
+        throw error;
+      }
+    }
+    return buffer;
+
+    function processClip(clip: ScreenshotClip): ScreenshotClip {
+      const x = Math.round(clip.x);
+      const y = Math.round(clip.y);
+      const width = Math.round(clip.width + clip.x - x);
+      const height = Math.round(clip.height + clip.y - y);
+      return {x, y, width, height, scale: clip.scale};
+    }
+  }
+
+  /**
+   * Generates a PDF of the page with the `print` CSS media type.
+   * @remarks
+   *
+   * NOTE: PDF generation is only supported in Chrome headless mode.
+   *
+   * To generate a PDF with the `screen` media type, call
+   * {@link Page.emulateMediaType | `page.emulateMediaType('screen')`} before
+   * calling `page.pdf()`.
+   *
+   * By default, `page.pdf()` generates a pdf with modified colors for printing.
+   * Use the
+   * {@link https://developer.mozilla.org/en-US/docs/Web/CSS/-webkit-print-color-adjust | `-webkit-print-color-adjust`}
+   * property to force rendering of exact colors.
+   *
+   * @param options - options for generating the PDF.
+   */
+  async createPDFStream(options: PDFOptions = {}): Promise<Readable> {
+    const {
+      scale = 1,
+      displayHeaderFooter = false,
+      headerTemplate = '',
+      footerTemplate = '',
+      printBackground = false,
+      landscape = false,
+      pageRanges = '',
+      preferCSSPageSize = false,
+      margin = {},
+      omitBackground = false,
+      timeout = 30000,
+    } = options;
+
+    let paperWidth = 8.5;
+    let paperHeight = 11;
+    if (options.format) {
+      const format =
+        _paperFormats[options.format.toLowerCase() as LowerCasePaperFormat];
+      assert(format, 'Unknown paper format: ' + options.format);
+      paperWidth = format.width;
+      paperHeight = format.height;
+    } else {
+      paperWidth = convertPrintParameterToInches(options.width) || paperWidth;
+      paperHeight =
+        convertPrintParameterToInches(options.height) || paperHeight;
+    }
+
+    const marginTop = convertPrintParameterToInches(margin.top) || 0;
+    const marginLeft = convertPrintParameterToInches(margin.left) || 0;
+    const marginBottom = convertPrintParameterToInches(margin.bottom) || 0;
+    const marginRight = convertPrintParameterToInches(margin.right) || 0;
+
+    if (omitBackground) {
+      await this.#setTransparentBackgroundColor();
+    }
+
+    const printCommandPromise = this.#client.send('Page.printToPDF', {
+      transferMode: 'ReturnAsStream',
+      landscape,
+      displayHeaderFooter,
+      headerTemplate,
+      footerTemplate,
+      printBackground,
+      scale,
+      paperWidth,
+      paperHeight,
+      marginTop,
+      marginBottom,
+      marginLeft,
+      marginRight,
+      pageRanges,
+      preferCSSPageSize,
+    });
+
+    const result = await waitWithTimeout(
+      printCommandPromise,
+      'Page.printToPDF',
+      timeout
+    );
+
+    if (omitBackground) {
+      await this.#resetDefaultBackgroundColor();
+    }
+
+    assert(result.stream, '`stream` is missing from `Page.printToPDF');
+    return getReadableFromProtocolStream(this.#client, result.stream);
+  }
+
+  /**
+   * @param options -
+   * @returns
+   */
+  async pdf(options: PDFOptions = {}): Promise<Buffer> {
+    const {path = undefined} = options;
+    const readable = await this.createPDFStream(options);
+    const buffer = await getReadableAsBuffer(readable, path);
+    assert(buffer, 'Could not create buffer');
+    return buffer;
+  }
+
+  /**
+   * @returns The page's title
+   * @remarks
+   * Shortcut for {@link Frame.title | page.mainFrame().title()}.
+   */
+  async title(): Promise<string> {
+    return this.mainFrame().title();
+  }
+
+  async close(
+    options: {runBeforeUnload?: boolean} = {runBeforeUnload: undefined}
+  ): Promise<void> {
+    const connection = this.#client.connection();
+    assert(
+      connection,
+      'Protocol error: Connection closed. Most likely the page has been closed.'
+    );
+    const runBeforeUnload = !!options.runBeforeUnload;
+    if (runBeforeUnload) {
+      await this.#client.send('Page.close');
+    } else {
+      await connection.send('Target.closeTarget', {
+        targetId: this.#target._targetId,
+      });
+      await this.#target._isClosedPromise;
+    }
+  }
+
+  /**
+   * Indicates that the page has been closed.
+   * @returns
+   */
+  isClosed(): boolean {
+    return this.#closed;
+  }
+
+  get mouse(): Mouse {
+    return this.#mouse;
+  }
+
+  /**
+   * This method fetches an element with `selector`, scrolls it into view if
+   * needed, and then uses {@link Page.mouse} to click in the center of the
+   * element. If there's no element matching `selector`, the method throws an
+   * error.
+   * @remarks Bear in mind that if `click()` triggers a navigation event and
+   * there's a separate `page.waitForNavigation()` promise to be resolved, you
+   * may end up with a race condition that yields unexpected results. The
+   * correct pattern for click and wait for navigation is the following:
+   *
+   * ```ts
+   * const [response] = await Promise.all([
+   *   page.waitForNavigation(waitOptions),
+   *   page.click(selector, clickOptions),
+   * ]);
+   * ```
+   *
+   * Shortcut for {@link Frame.click | page.mainFrame().click(selector[, options]) }.
+   * @param selector - A `selector` to search for element to click. If there are
+   * multiple elements satisfying the `selector`, the first will be clicked
+   * @param options - `Object`
+   * @returns Promise which resolves when the element matching `selector` is
+   * successfully clicked. The Promise will be rejected if there is no element
+   * matching `selector`.
+   */
+  click(
+    selector: string,
+    options: {
+      delay?: number;
+      button?: MouseButton;
+      clickCount?: number;
+    } = {}
+  ): Promise<void> {
+    return this.mainFrame().click(selector, options);
+  }
+
+  /**
+   * This method fetches an element with `selector` and focuses it. If there's no
+   * element matching `selector`, the method throws an error.
+   * @param selector - A
+   * {@link https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Selectors | selector }
+   * of an element to focus. If there are multiple elements satisfying the
+   * selector, the first will be focused.
+   * @returns Promise which resolves when the element matching selector is
+   * successfully focused. The promise will be rejected if there is no element
+   * matching selector.
+   * @remarks
+   * Shortcut for {@link Frame.focus | page.mainFrame().focus(selector)}.
+   */
+  focus(selector: string): Promise<void> {
+    return this.mainFrame().focus(selector);
+  }
+
+  /**
+   * This method fetches an element with `selector`, scrolls it into view if
+   * needed, and then uses {@link Page.mouse} to hover over the center of the element.
+   * If there's no element matching `selector`, the method throws an error.
+   * @param selector - A
+   * {@link https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Selectors | selector}
+   * to search for element to hover. If there are multiple elements satisfying
+   * the selector, the first will be hovered.
+   * @returns Promise which resolves when the element matching `selector` is
+   * successfully hovered. Promise gets rejected if there's no element matching
+   * `selector`.
+   * @remarks
+   * Shortcut for {@link Page.hover | page.mainFrame().hover(selector)}.
+   */
+  hover(selector: string): Promise<void> {
+    return this.mainFrame().hover(selector);
+  }
+
+  /**
+   * Triggers a `change` and `input` event once all the provided options have been
+   * selected. If there's no `<select>` element matching `selector`, the method
+   * throws an error.
+   *
+   * @example
+   *
+   * ```ts
+   * page.select('select#colors', 'blue'); // single selection
+   * page.select('select#colors', 'red', 'green', 'blue'); // multiple selections
+   * ```
+   *
+   * @param selector - A
+   * {@link https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Selectors | Selector}
+   * to query the page for
+   * @param values - Values of options to select. If the `<select>` has the
+   * `multiple` attribute, all values are considered, otherwise only the first one
+   * is taken into account.
+   * @returns
+   *
+   * @remarks
+   * Shortcut for {@link Frame.select | page.mainFrame().select()}
+   */
+  select(selector: string, ...values: string[]): Promise<string[]> {
+    return this.mainFrame().select(selector, ...values);
+  }
+
+  /**
+   * This method fetches an element with `selector`, scrolls it into view if
+   * needed, and then uses {@link Page.touchscreen} to tap in the center of the element.
+   * If there's no element matching `selector`, the method throws an error.
+   * @param selector - A
+   * {@link https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Selectors | Selector}
+   * to search for element to tap. If there are multiple elements satisfying the
+   * selector, the first will be tapped.
+   * @returns
+   * @remarks
+   * Shortcut for {@link Frame.tap | page.mainFrame().tap(selector)}.
+   */
+  tap(selector: string): Promise<void> {
+    return this.mainFrame().tap(selector);
+  }
+
+  /**
+   * Sends a `keydown`, `keypress/input`, and `keyup` event for each character
+   * in the text.
+   *
+   * To press a special key, like `Control` or `ArrowDown`, use {@link Keyboard.press}.
+   * @example
+   *
+   * ```ts
+   * await page.type('#mytextarea', 'Hello');
+   * // Types instantly
+   * await page.type('#mytextarea', 'World', {delay: 100});
+   * // Types slower, like a user
+   * ```
+   *
+   * @param selector - A
+   * {@link https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Selectors | selector}
+   * of an element to type into. If there are multiple elements satisfying the
+   * selector, the first will be used.
+   * @param text - A text to type into a focused element.
+   * @param options - have property `delay` which is the Time to wait between
+   * key presses in milliseconds. Defaults to `0`.
+   * @returns
+   * @remarks
+   */
+  type(
+    selector: string,
+    text: string,
+    options?: {delay: number}
+  ): Promise<void> {
+    return this.mainFrame().type(selector, text, options);
+  }
+
+  /**
+   * @deprecated Use `new Promise(r => setTimeout(r, milliseconds));`.
+   *
+   * Causes your script to wait for the given number of milliseconds.
+   *
+   * @remarks
+   * It's generally recommended to not wait for a number of seconds, but instead
+   * use {@link Frame.waitForSelector}, {@link Frame.waitForXPath} or
+   * {@link Frame.waitForFunction} to wait for exactly the conditions you want.
+   *
+   * @example
+   *
+   * Wait for 1 second:
+   *
+   * ```ts
+   * await page.waitForTimeout(1000);
+   * ```
+   *
+   * @param milliseconds - the number of milliseconds to wait.
+   */
+  waitForTimeout(milliseconds: number): Promise<void> {
+    return this.mainFrame().waitForTimeout(milliseconds);
+  }
+
+  /**
+   * Wait for the `selector` to appear in page. If at the moment of calling the
+   * method the `selector` already exists, the method will return immediately. If
+   * the `selector` doesn't appear after the `timeout` milliseconds of waiting, the
+   * function will throw.
+   *
+   * This method works across navigations:
+   *
+   * ```ts
+   * const puppeteer = require('puppeteer');
+   * (async () => {
+   *   const browser = await puppeteer.launch();
+   *   const page = await browser.newPage();
+   *   let currentURL;
+   *   page
+   *     .waitForSelector('img')
+   *     .then(() => console.log('First URL with image: ' + currentURL));
+   *   for (currentURL of [
+   *     'https://example.com',
+   *     'https://google.com',
+   *     'https://bbc.com',
+   *   ]) {
+   *     await page.goto(currentURL);
+   *   }
+   *   await browser.close();
+   * })();
+   * ```
+   *
+   * @param selector - A
+   * {@link https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Selectors | selector}
+   * of an element to wait for
+   * @param options - Optional waiting parameters
+   * @returns Promise which resolves when element specified by selector string
+   * is added to DOM. Resolves to `null` if waiting for hidden: `true` and
+   * selector is not found in DOM.
+   * @remarks
+   * The optional Parameter in Arguments `options` are :
+   *
+   * - `Visible`: A boolean wait for element to be present in DOM and to be
+   *   visible, i.e. to not have `display: none` or `visibility: hidden` CSS
+   *   properties. Defaults to `false`.
+   *
+   * - `hidden`: Wait for element to not be found in the DOM or to be hidden,
+   *   i.e. have `display: none` or `visibility: hidden` CSS properties. Defaults to
+   *   `false`.
+   *
+   * - `timeout`: maximum time to wait for in milliseconds. Defaults to `30000`
+   *   (30 seconds). Pass `0` to disable timeout. The default value can be changed
+   *   by using the {@link Page.setDefaultTimeout} method.
+   */
+  async waitForSelector<Selector extends string>(
+    selector: Selector,
+    options: WaitForSelectorOptions = {}
+  ): Promise<ElementHandle<NodeFor<Selector>> | null> {
+    return await this.mainFrame().waitForSelector(selector, options);
+  }
+
+  /**
+   * Wait for the `xpath` to appear in page. If at the moment of calling the
+   * method the `xpath` already exists, the method will return immediately. If
+   * the `xpath` doesn't appear after the `timeout` milliseconds of waiting, the
+   * function will throw.
+   *
+   * This method works across navigation
+   *
+   * ```ts
+   * const puppeteer = require('puppeteer');
+   * (async () => {
+   *   const browser = await puppeteer.launch();
+   *   const page = await browser.newPage();
+   *   let currentURL;
+   *   page
+   *     .waitForXPath('//img')
+   *     .then(() => console.log('First URL with image: ' + currentURL));
+   *   for (currentURL of [
+   *     'https://example.com',
+   *     'https://google.com',
+   *     'https://bbc.com',
+   *   ]) {
+   *     await page.goto(currentURL);
+   *   }
+   *   await browser.close();
+   * })();
+   * ```
+   *
+   * @param xpath - A
+   * {@link https://developer.mozilla.org/en-US/docs/Web/XPath | xpath} of an
+   * element to wait for
+   * @param options - Optional waiting parameters
+   * @returns Promise which resolves when element specified by xpath string is
+   * added to DOM. Resolves to `null` if waiting for `hidden: true` and xpath is
+   * not found in DOM.
+   * @remarks
+   * The optional Argument `options` have properties:
+   *
+   * - `visible`: A boolean to wait for element to be present in DOM and to be
+   *   visible, i.e. to not have `display: none` or `visibility: hidden` CSS
+   *   properties. Defaults to `false`.
+   *
+   * - `hidden`: A boolean wait for element to not be found in the DOM or to be
+   *   hidden, i.e. have `display: none` or `visibility: hidden` CSS properties.
+   *   Defaults to `false`.
+   *
+   * - `timeout`: A number which is maximum time to wait for in milliseconds.
+   *   Defaults to `30000` (30 seconds). Pass `0` to disable timeout. The default
+   *   value can be changed by using the {@link Page.setDefaultTimeout} method.
+   */
+  waitForXPath(
+    xpath: string,
+    options: {
+      visible?: boolean;
+      hidden?: boolean;
+      timeout?: number;
+    } = {}
+  ): Promise<ElementHandle<Node> | null> {
+    return this.mainFrame().waitForXPath(xpath, options);
+  }
+
+  /**
+   * Waits for a function to finish evaluating in the page's context.
+   *
+   * @example
+   * The {@link Page.waitForFunction} can be used to observe viewport size change:
+   *
+   * ```ts
+   * const puppeteer = require('puppeteer');
+   * (async () => {
+   *   const browser = await puppeteer.launch();
+   *   const page = await browser.newPage();
+   *   const watchDog = page.waitForFunction('window.innerWidth < 100');
+   *   await page.setViewport({width: 50, height: 50});
+   *   await watchDog;
+   *   await browser.close();
+   * })();
+   * ```
+   *
+   * @example
+   * To pass arguments from node.js to the predicate of
+   * {@link Page.waitForFunction} function:
+   *
+   * ```ts
+   * const selector = '.foo';
+   * await page.waitForFunction(
+   *   selector => !!document.querySelector(selector),
+   *   {},
+   *   selector
+   * );
+   * ```
+   *
+   * @example
+   * The predicate of {@link Page.waitForFunction} can be asynchronous too:
+   *
+   * ```ts
+   * const username = 'github-username';
+   * await page.waitForFunction(
+   *   async username => {
+   *     const githubResponse = await fetch(
+   *       `https://api.github.com/users/${username}`
+   *     );
+   *     const githubUser = await githubResponse.json();
+   *     // show the avatar
+   *     const img = document.createElement('img');
+   *     img.src = githubUser.avatar_url;
+   *     // wait 3 seconds
+   *     await new Promise((resolve, reject) => setTimeout(resolve, 3000));
+   *     img.remove();
+   *   },
+   *   {},
+   *   username
+   * );
+   * ```
+   *
+   * @param pageFunction - Function to be evaluated in browser context
+   * @param options - Optional waiting parameters
+   *
+   * - `polling` - An interval at which the `pageFunction` is executed, defaults
+   *   to `raf`. If `polling` is a number, then it is treated as an interval in
+   *   milliseconds at which the function would be executed. If polling is a
+   *   string, then it can be one of the following values:
+   *   - `raf` - to constantly execute `pageFunction` in
+   *     `requestAnimationFrame` callback. This is the tightest polling mode
+   *     which is suitable to observe styling changes.
+   *   - `mutation`- to execute pageFunction on every DOM mutation.
+   * - `timeout` - maximum time to wait for in milliseconds. Defaults to `30000`
+   *   (30 seconds). Pass `0` to disable timeout. The default value can be
+   *   changed by using the {@link Page.setDefaultTimeout} method.
+   *   @param args - Arguments to pass to `pageFunction`
+   *   @returns A `Promise` which resolves to a JSHandle/ElementHandle of the the
+   *   `pageFunction`'s return value.
+   */
+  waitForFunction<
+    Params extends unknown[],
+    Func extends EvaluateFunc<Params> = EvaluateFunc<Params>
+  >(
+    pageFunction: Func | string,
+    options: {
+      timeout?: number;
+      polling?: string | number;
+    } = {},
+    ...args: Params
+  ): Promise<HandleFor<Awaited<ReturnType<Func>>>> {
+    return this.mainFrame().waitForFunction(pageFunction, options, ...args);
+  }
+}
+
+const supportedMetrics = new Set<string>([
+  'Timestamp',
+  'Documents',
+  'Frames',
+  'JSEventListeners',
+  'Nodes',
+  'LayoutCount',
+  'RecalcStyleCount',
+  'LayoutDuration',
+  'RecalcStyleDuration',
+  'ScriptDuration',
+  'TaskDuration',
+  'JSHeapUsedSize',
+  'JSHeapTotalSize',
+]);
+
+const unitToPixels = {
+  px: 1,
+  in: 96,
+  cm: 37.8,
+  mm: 3.78,
+};
+
+function convertPrintParameterToInches(
+  parameter?: string | number
+): number | undefined {
+  if (typeof parameter === 'undefined') {
+    return undefined;
+  }
+  let pixels;
+  if (isNumber(parameter)) {
+    // Treat numbers as pixel values to be aligned with phantom's paperSize.
+    pixels = parameter;
+  } else if (isString(parameter)) {
+    const text = parameter;
+    let unit = text.substring(text.length - 2).toLowerCase();
+    let valueText = '';
+    if (unit in unitToPixels) {
+      valueText = text.substring(0, text.length - 2);
+    } else {
+      // In case of unknown unit try to parse the whole parameter as number of pixels.
+      // This is consistent with phantom's paperSize behavior.
+      unit = 'px';
+      valueText = text;
+    }
+    const value = Number(valueText);
+    assert(!isNaN(value), 'Failed to parse parameter value: ' + text);
+    pixels = value * unitToPixels[unit as keyof typeof unitToPixels];
+  } else {
+    throw new Error(
+      'page.pdf() Cannot handle parameter type: ' + typeof parameter
+    );
+  }
+  return pixels / 96;
+}
diff --git a/remote/test/puppeteer/src/common/Product.ts b/remote/test/puppeteer/src/common/Product.ts
new file mode 100644
index 0000000000..58a62fad3e
--- /dev/null
+++ b/remote/test/puppeteer/src/common/Product.ts
@@ -0,0 +1,21 @@
+/**
+ * Copyright 2020 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * Supported products.
+ * @public
+ */
+export type Product = 'chrome' | 'firefox';
diff --git a/remote/test/puppeteer/src/common/Puppeteer.ts b/remote/test/puppeteer/src/common/Puppeteer.ts
new file mode 100644
index 0000000000..579f68a937
--- /dev/null
+++ b/remote/test/puppeteer/src/common/Puppeteer.ts
@@ -0,0 +1,167 @@
+/**
+ * Copyright 2017 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import {Browser} from './Browser.js';
+import {BrowserConnectOptions, _connectToBrowser} from './BrowserConnector.js';
+import {ConnectionTransport} from './ConnectionTransport.js';
+import {devices} from './DeviceDescriptors.js';
+import {errors} from './Errors.js';
+import {networkConditions} from './NetworkConditions.js';
+import {
+  clearCustomQueryHandlers,
+  CustomQueryHandler,
+  customQueryHandlerNames,
+  registerCustomQueryHandler,
+  unregisterCustomQueryHandler,
+} from './QueryHandler.js';
+
+/**
+ * Settings that are common to the Puppeteer class, regardless of environment.
+ *
+ * @internal
+ */
+export interface CommonPuppeteerSettings {
+  isPuppeteerCore: boolean;
+}
+/**
+ * @public
+ */
+export interface ConnectOptions extends BrowserConnectOptions {
+  browserWSEndpoint?: string;
+  browserURL?: string;
+  transport?: ConnectionTransport;
+}
+
+/**
+ * The main Puppeteer class.
+ *
+ * IMPORTANT: if you are using Puppeteer in a Node environment, you will get an
+ * instance of {@link PuppeteerNode} when you import or require `puppeteer`.
+ * That class extends `Puppeteer`, so has all the methods documented below as
+ * well as all that are defined on {@link PuppeteerNode}.
+ * @public
+ */
+export class Puppeteer {
+  protected _isPuppeteerCore: boolean;
+  protected _changedProduct = false;
+
+  /**
+   * @internal
+   */
+  constructor(settings: CommonPuppeteerSettings) {
+    this._isPuppeteerCore = settings.isPuppeteerCore;
+
+    this.connect = this.connect.bind(this);
+  }
+
+  /**
+   * This method attaches Puppeteer to an existing browser instance.
+   *
+   * @remarks
+   *
+   * @param options - Set of configurable options to set on the browser.
+   * @returns Promise which resolves to browser instance.
+   */
+  connect(options: ConnectOptions): Promise<Browser> {
+    return _connectToBrowser(options);
+  }
+
+  /**
+   * @deprecated Import directly puppeteer.
+   * @example
+   *
+   * ```ts
+   * import {devices} from 'puppeteer';
+   * ```
+   */
+  get devices(): typeof devices {
+    return devices;
+  }
+
+  /**
+   * @deprecated Import directly puppeteer.
+   * @example
+   *
+   * ```ts
+   * import {errors} from 'puppeteer';
+   * ```
+   */
+  get errors(): typeof errors {
+    return errors;
+  }
+
+  /**
+   * @deprecated Import directly puppeteer.
+   * @example
+   *
+   * ```ts
+   * import {networkConditions} from 'puppeteer';
+   * ```
+   */
+  get networkConditions(): typeof networkConditions {
+    return networkConditions;
+  }
+
+  /**
+   * @deprecated Import directly puppeteer.
+   * @example
+   *
+   * ```ts
+   * import {registerCustomQueryHandler} from 'puppeteer';
+   * ```
+   */
+  registerCustomQueryHandler(
+    name: string,
+    queryHandler: CustomQueryHandler
+  ): void {
+    return registerCustomQueryHandler(name, queryHandler);
+  }
+
+  /**
+   * @deprecated Import directly puppeteer.
+   * @example
+   *
+   * ```ts
+   * import {unregisterCustomQueryHandler} from 'puppeteer';
+   * ```
+   */
+  unregisterCustomQueryHandler(name: string): void {
+    return unregisterCustomQueryHandler(name);
+  }
+
+  /**
+   * @deprecated Import directly puppeteer.
+   * @example
+   *
+   * ```ts
+   * import {customQueryHandlerNames} from 'puppeteer';
+   * ```
+   */
+  customQueryHandlerNames(): string[] {
+    return customQueryHandlerNames();
+  }
+
+  /**
+   * @deprecated Import directly puppeteer.
+   * @example
+   *
+   * ```ts
+   * import {clearCustomQueryHandlers} from 'puppeteer';
+   * ```
+   */
+  clearCustomQueryHandlers(): void {
+    return clearCustomQueryHandlers();
+  }
+}
diff --git a/remote/test/puppeteer/src/common/PuppeteerViewport.ts b/remote/test/puppeteer/src/common/PuppeteerViewport.ts
new file mode 100644
index 0000000000..48a0823b52
--- /dev/null
+++ b/remote/test/puppeteer/src/common/PuppeteerViewport.ts
@@ -0,0 +1,51 @@
+/**
+ * Copyright 2020 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/**
+ *
+ * Sets the viewport of the page.
+ * @public
+ */
+export interface Viewport {
+  /**
+   * The page width in pixels.
+   */
+  width: number;
+  /**
+   * The page height in pixels.
+   */
+  height: number;
+  /**
+   * Specify device scale factor.
+   * See {@link https://developer.mozilla.org/en-US/docs/Web/API/Window/devicePixelRatio | devicePixelRatio} for more info.
+   * @defaultValue 1
+   */
+  deviceScaleFactor?: number;
+  /**
+   * Whether the `meta viewport` tag is taken into account.
+   * @defaultValue false
+   */
+  isMobile?: boolean;
+  /**
+   * Specifies if the viewport is in landscape mode.
+   * @defaultValue false
+   */
+  isLandscape?: boolean;
+  /**
+   * Specify if the viewport supports touch events.
+   * @defaultValue false
+   */
+  hasTouch?: boolean;
+}
diff --git a/remote/test/puppeteer/src/common/QueryHandler.ts b/remote/test/puppeteer/src/common/QueryHandler.ts
new file mode 100644
index 0000000000..5fd360e06d
--- /dev/null
+++ b/remote/test/puppeteer/src/common/QueryHandler.ts
@@ -0,0 +1,354 @@
+/**
+ * Copyright 2020 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import {ariaHandler} from './AriaQueryHandler.js';
+import {ElementHandle} from './ElementHandle.js';
+import {Frame} from './Frame.js';
+import {
+  MAIN_WORLD,
+  PUPPETEER_WORLD,
+  WaitForSelectorOptions,
+} from './IsolatedWorld.js';
+
+/**
+ * @public
+ */
+export interface CustomQueryHandler {
+  /**
+   * @returns A {@link Node} matching the given `selector` from {@link node}.
+   */
+  queryOne?: (node: Node, selector: string) => Node | null;
+  /**
+   * @returns Some {@link Node}s matching the given `selector` from {@link node}.
+   */
+  queryAll?: (node: Node, selector: string) => Node[];
+}
+
+/**
+ * @internal
+ */
+export interface InternalQueryHandler {
+  /**
+   * Queries for a single node given a selector and {@link ElementHandle}.
+   *
+   * Akin to {@link Window.prototype.querySelector}.
+   */
+  queryOne?: (
+    element: ElementHandle<Node>,
+    selector: string
+  ) => Promise<ElementHandle<Node> | null>;
+  /**
+   * Queries for multiple nodes given a selector and {@link ElementHandle}.
+   *
+   * Akin to {@link Window.prototype.querySelectorAll}.
+   */
+  queryAll?: (
+    element: ElementHandle<Node>,
+    selector: string
+  ) => Promise<Array<ElementHandle<Node>>>;
+
+  /**
+   * Waits until a single node appears for a given selector and
+   * {@link ElementHandle}.
+   */
+  waitFor?: (
+    elementOrFrame: ElementHandle<Node> | Frame,
+    selector: string,
+    options: WaitForSelectorOptions
+  ) => Promise<ElementHandle<Node> | null>;
+}
+
+function internalizeCustomQueryHandler(
+  handler: CustomQueryHandler
+): InternalQueryHandler {
+  const internalHandler: InternalQueryHandler = {};
+
+  if (handler.queryOne) {
+    const queryOne = handler.queryOne;
+    internalHandler.queryOne = async (element, selector) => {
+      const jsHandle = await element.evaluateHandle(queryOne, selector);
+      const elementHandle = jsHandle.asElement();
+      if (elementHandle) {
+        return elementHandle;
+      }
+      await jsHandle.dispose();
+      return null;
+    };
+    internalHandler.waitFor = async (elementOrFrame, selector, options) => {
+      let frame: Frame;
+      let element: ElementHandle<Node> | undefined;
+      if (elementOrFrame instanceof Frame) {
+        frame = elementOrFrame;
+      } else {
+        frame = elementOrFrame.frame;
+        element = await frame.worlds[PUPPETEER_WORLD].adoptHandle(
+          elementOrFrame
+        );
+      }
+      const result = await frame.worlds[PUPPETEER_WORLD]._waitForSelectorInPage(
+        queryOne,
+        element,
+        selector,
+        options
+      );
+      if (element) {
+        await element.dispose();
+      }
+      if (!result) {
+        return null;
+      }
+      if (!(result instanceof ElementHandle)) {
+        await result.dispose();
+        return null;
+      }
+      return frame.worlds[MAIN_WORLD].transferHandle(result);
+    };
+  }
+
+  if (handler.queryAll) {
+    const queryAll = handler.queryAll;
+    internalHandler.queryAll = async (element, selector) => {
+      const jsHandle = await element.evaluateHandle(queryAll, selector);
+      const properties = await jsHandle.getProperties();
+      await jsHandle.dispose();
+      const result = [];
+      for (const property of properties.values()) {
+        const elementHandle = property.asElement();
+        if (elementHandle) {
+          result.push(elementHandle);
+        }
+      }
+      return result;
+    };
+  }
+
+  return internalHandler;
+}
+
+const defaultHandler = internalizeCustomQueryHandler({
+  queryOne: (element, selector) => {
+    if (!('querySelector' in element)) {
+      throw new Error(
+        `Could not invoke \`querySelector\` on node of type ${element.nodeName}.`
+      );
+    }
+    return (
+      element as unknown as {querySelector(selector: string): Element}
+    ).querySelector(selector);
+  },
+  queryAll: (element, selector) => {
+    if (!('querySelectorAll' in element)) {
+      throw new Error(
+        `Could not invoke \`querySelectorAll\` on node of type ${element.nodeName}.`
+      );
+    }
+    return [
+      ...(
+        element as unknown as {
+          querySelectorAll(selector: string): NodeList;
+        }
+      ).querySelectorAll(selector),
+    ];
+  },
+});
+
+const pierceHandler = internalizeCustomQueryHandler({
+  queryOne: (element, selector) => {
+    let found: Node | null = null;
+    const search = (root: Node) => {
+      const iter = document.createTreeWalker(root, NodeFilter.SHOW_ELEMENT);
+      do {
+        const currentNode = iter.currentNode as HTMLElement;
+        if (currentNode.shadowRoot) {
+          search(currentNode.shadowRoot);
+        }
+        if (currentNode instanceof ShadowRoot) {
+          continue;
+        }
+        if (currentNode !== root && !found && currentNode.matches(selector)) {
+          found = currentNode;
+        }
+      } while (!found && iter.nextNode());
+    };
+    if (element instanceof Document) {
+      element = element.documentElement;
+    }
+    search(element);
+    return found;
+  },
+
+  queryAll: (element, selector) => {
+    const result: Node[] = [];
+    const collect = (root: Node) => {
+      const iter = document.createTreeWalker(root, NodeFilter.SHOW_ELEMENT);
+      do {
+        const currentNode = iter.currentNode as HTMLElement;
+        if (currentNode.shadowRoot) {
+          collect(currentNode.shadowRoot);
+        }
+        if (currentNode instanceof ShadowRoot) {
+          continue;
+        }
+        if (currentNode !== root && currentNode.matches(selector)) {
+          result.push(currentNode);
+        }
+      } while (iter.nextNode());
+    };
+    if (element instanceof Document) {
+      element = element.documentElement;
+    }
+    collect(element);
+    return result;
+  },
+});
+
+const xpathHandler = internalizeCustomQueryHandler({
+  queryOne: (element, selector) => {
+    const doc = element.ownerDocument || document;
+    const result = doc.evaluate(
+      selector,
+      element,
+      null,
+      XPathResult.FIRST_ORDERED_NODE_TYPE
+    );
+    return result.singleNodeValue;
+  },
+
+  queryAll: (element, selector) => {
+    const doc = element.ownerDocument || document;
+    const iterator = doc.evaluate(
+      selector,
+      element,
+      null,
+      XPathResult.ORDERED_NODE_ITERATOR_TYPE
+    );
+    const array: Node[] = [];
+    let item;
+    while ((item = iterator.iterateNext())) {
+      array.push(item);
+    }
+    return array;
+  },
+});
+
+interface RegisteredQueryHandler {
+  handler: InternalQueryHandler;
+  transformSelector?: (selector: string) => string;
+}
+
+const INTERNAL_QUERY_HANDLERS = new Map<string, RegisteredQueryHandler>([
+  ['aria', {handler: ariaHandler}],
+  ['pierce', {handler: pierceHandler}],
+  ['xpath', {handler: xpathHandler}],
+]);
+const QUERY_HANDLERS = new Map<string, RegisteredQueryHandler>();
+
+/**
+ * Registers a {@link CustomQueryHandler | custom query handler}.
+ *
+ * @remarks
+ * After registration, the handler can be used everywhere where a selector is
+ * expected by prepending the selection string with `<name>/`. The name is only
+ * allowed to consist of lower- and upper case latin letters.
+ *
+ * @example
+ *
+ * ```
+ * puppeteer.registerCustomQueryHandler('text', { … });
+ * const aHandle = await page.$('text/…');
+ * ```
+ *
+ * @param name - The name that the custom query handler will be registered
+ * under.
+ * @param queryHandler - The {@link CustomQueryHandler | custom query handler}
+ * to register.
+ *
+ * @public
+ */
+export function registerCustomQueryHandler(
+  name: string,
+  handler: CustomQueryHandler
+): void {
+  if (INTERNAL_QUERY_HANDLERS.has(name)) {
+    throw new Error(`A query handler named "${name}" already exists`);
+  }
+  if (QUERY_HANDLERS.has(name)) {
+    throw new Error(`A custom query handler named "${name}" already exists`);
+  }
+
+  const isValidName = /^[a-zA-Z]+$/.test(name);
+  if (!isValidName) {
+    throw new Error(`Custom query handler names may only contain [a-zA-Z]`);
+  }
+
+  QUERY_HANDLERS.set(name, {handler: internalizeCustomQueryHandler(handler)});
+}
+
+/**
+ * @param name - The name of the query handler to unregistered.
+ *
+ * @public
+ */
+export function unregisterCustomQueryHandler(name: string): void {
+  QUERY_HANDLERS.delete(name);
+}
+
+/**
+ * @returns a list with the names of all registered custom query handlers.
+ *
+ * @public
+ */
+export function customQueryHandlerNames(): string[] {
+  return [...QUERY_HANDLERS.keys()];
+}
+
+/**
+ * Clears all registered handlers.
+ *
+ * @public
+ */
+export function clearCustomQueryHandlers(): void {
+  QUERY_HANDLERS.clear();
+}
+
+const CUSTOM_QUERY_SEPARATORS = ['=', '/'];
+
+/**
+ * @internal
+ */
+export function getQueryHandlerAndSelector(selector: string): {
+  updatedSelector: string;
+  queryHandler: InternalQueryHandler;
+} {
+  for (const handlerMap of [QUERY_HANDLERS, INTERNAL_QUERY_HANDLERS]) {
+    for (const [
+      name,
+      {handler: queryHandler, transformSelector},
+    ] of handlerMap) {
+      for (const separator of CUSTOM_QUERY_SEPARATORS) {
+        const prefix = `${name}${separator}`;
+        if (selector.startsWith(prefix)) {
+          selector = selector.slice(prefix.length);
+          if (transformSelector) {
+            selector = transformSelector(selector);
+          }
+          return {updatedSelector: selector, queryHandler};
+        }
+      }
+    }
+  }
+  return {updatedSelector: selector, queryHandler: defaultHandler};
+}
diff --git a/remote/test/puppeteer/src/common/SecurityDetails.ts b/remote/test/puppeteer/src/common/SecurityDetails.ts
new file mode 100644
index 0000000000..7df6aef88a
--- /dev/null
+++ b/remote/test/puppeteer/src/common/SecurityDetails.ts
@@ -0,0 +1,88 @@
+/**
+ * Copyright 2020 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import {Protocol} from 'devtools-protocol';
+
+/**
+ * The SecurityDetails class represents the security details of a
+ * response that was received over a secure connection.
+ *
+ * @public
+ */
+export class SecurityDetails {
+  #subjectName: string;
+  #issuer: string;
+  #validFrom: number;
+  #validTo: number;
+  #protocol: string;
+  #sanList: string[];
+
+  /**
+   * @internal
+   */
+  constructor(securityPayload: Protocol.Network.SecurityDetails) {
+    this.#subjectName = securityPayload.subjectName;
+    this.#issuer = securityPayload.issuer;
+    this.#validFrom = securityPayload.validFrom;
+    this.#validTo = securityPayload.validTo;
+    this.#protocol = securityPayload.protocol;
+    this.#sanList = securityPayload.sanList;
+  }
+
+  /**
+   * @returns The name of the issuer of the certificate.
+   */
+  issuer(): string {
+    return this.#issuer;
+  }
+
+  /**
+   * @returns {@link https://en.wikipedia.org/wiki/Unix_time | Unix timestamp}
+   * marking the start of the certificate's validity.
+   */
+  validFrom(): number {
+    return this.#validFrom;
+  }
+
+  /**
+   * @returns {@link https://en.wikipedia.org/wiki/Unix_time | Unix timestamp}
+   * marking the end of the certificate's validity.
+   */
+  validTo(): number {
+    return this.#validTo;
+  }
+
+  /**
+   * @returns The security protocol being used, e.g. "TLS 1.2".
+   */
+  protocol(): string {
+    return this.#protocol;
+  }
+
+  /**
+   * @returns The name of the subject to which the certificate was issued.
+   */
+  subjectName(): string {
+    return this.#subjectName;
+  }
+
+  /**
+   * @returns The list of {@link https://en.wikipedia.org/wiki/Subject_Alternative_Name | subject alternative names (SANs)} of the certificate.
+   */
+  subjectAlternativeNames(): string[] {
+    return this.#sanList;
+  }
+}
diff --git a/remote/test/puppeteer/src/common/Target.ts b/remote/test/puppeteer/src/common/Target.ts
new file mode 100644
index 0000000000..5744834f1b
--- /dev/null
+++ b/remote/test/puppeteer/src/common/Target.ts
@@ -0,0 +1,276 @@
+/**
+ * Copyright 2019 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import {Page, PageEmittedEvents} from './Page.js';
+import {WebWorker} from './WebWorker.js';
+import {CDPSession} from './Connection.js';
+import {Browser, BrowserContext, IsPageTargetCallback} from './Browser.js';
+import {Viewport} from './PuppeteerViewport.js';
+import {Protocol} from 'devtools-protocol';
+import {TaskQueue} from './TaskQueue.js';
+import {TargetManager} from './TargetManager.js';
+
+/**
+ * @public
+ */
+export class Target {
+  #browserContext: BrowserContext;
+  #session?: CDPSession;
+  #targetInfo: Protocol.Target.TargetInfo;
+  #sessionFactory: (isAutoAttachEmulated: boolean) => Promise<CDPSession>;
+  #ignoreHTTPSErrors: boolean;
+  #defaultViewport?: Viewport;
+  #pagePromise?: Promise<Page>;
+  #workerPromise?: Promise<WebWorker>;
+  #screenshotTaskQueue: TaskQueue;
+
+  /**
+   * @internal
+   */
+  _initializedPromise: Promise<boolean>;
+  /**
+   * @internal
+   */
+  _initializedCallback!: (x: boolean) => void;
+  /**
+   * @internal
+   */
+  _isClosedPromise: Promise<void>;
+  /**
+   * @internal
+   */
+  _closedCallback!: () => void;
+  /**
+   * @internal
+   */
+  _isInitialized: boolean;
+  /**
+   * @internal
+   */
+  _targetId: string;
+  /**
+   * @internal
+   */
+  _isPageTargetCallback: IsPageTargetCallback;
+
+  #targetManager: TargetManager;
+
+  /**
+   * @internal
+   */
+  constructor(
+    targetInfo: Protocol.Target.TargetInfo,
+    session: CDPSession | undefined,
+    browserContext: BrowserContext,
+    targetManager: TargetManager,
+    sessionFactory: (isAutoAttachEmulated: boolean) => Promise<CDPSession>,
+    ignoreHTTPSErrors: boolean,
+    defaultViewport: Viewport | null,
+    screenshotTaskQueue: TaskQueue,
+    isPageTargetCallback: IsPageTargetCallback
+  ) {
+    this.#session = session;
+    this.#targetManager = targetManager;
+    this.#targetInfo = targetInfo;
+    this.#browserContext = browserContext;
+    this._targetId = targetInfo.targetId;
+    this.#sessionFactory = sessionFactory;
+    this.#ignoreHTTPSErrors = ignoreHTTPSErrors;
+    this.#defaultViewport = defaultViewport ?? undefined;
+    this.#screenshotTaskQueue = screenshotTaskQueue;
+    this._isPageTargetCallback = isPageTargetCallback;
+    this._initializedPromise = new Promise<boolean>(fulfill => {
+      return (this._initializedCallback = fulfill);
+    }).then(async success => {
+      if (!success) {
+        return false;
+      }
+      const opener = this.opener();
+      if (!opener || !opener.#pagePromise || this.type() !== 'page') {
+        return true;
+      }
+      const openerPage = await opener.#pagePromise;
+      if (!openerPage.listenerCount(PageEmittedEvents.Popup)) {
+        return true;
+      }
+      const popupPage = await this.page();
+      openerPage.emit(PageEmittedEvents.Popup, popupPage);
+      return true;
+    });
+    this._isClosedPromise = new Promise<void>(fulfill => {
+      return (this._closedCallback = fulfill);
+    });
+    this._isInitialized =
+      !this._isPageTargetCallback(this.#targetInfo) ||
+      this.#targetInfo.url !== '';
+    if (this._isInitialized) {
+      this._initializedCallback(true);
+    }
+  }
+
+  /**
+   * @internal
+   */
+  _session(): CDPSession | undefined {
+    return this.#session;
+  }
+
+  /**
+   * Creates a Chrome Devtools Protocol session attached to the target.
+   */
+  createCDPSession(): Promise<CDPSession> {
+    return this.#sessionFactory(false);
+  }
+
+  /**
+   * @internal
+   */
+  _targetManager(): TargetManager {
+    return this.#targetManager;
+  }
+
+  /**
+   * @internal
+   */
+  _getTargetInfo(): Protocol.Target.TargetInfo {
+    return this.#targetInfo;
+  }
+
+  /**
+   * If the target is not of type `"page"` or `"background_page"`, returns `null`.
+   */
+  async page(): Promise<Page | null> {
+    if (this._isPageTargetCallback(this.#targetInfo) && !this.#pagePromise) {
+      this.#pagePromise = (
+        this.#session
+          ? Promise.resolve(this.#session)
+          : this.#sessionFactory(true)
+      ).then(client => {
+        return Page._create(
+          client,
+          this,
+          this.#ignoreHTTPSErrors,
+          this.#defaultViewport ?? null,
+          this.#screenshotTaskQueue
+        );
+      });
+    }
+    return (await this.#pagePromise) ?? null;
+  }
+
+  /**
+   * If the target is not of type `"service_worker"` or `"shared_worker"`, returns `null`.
+   */
+  async worker(): Promise<WebWorker | null> {
+    if (
+      this.#targetInfo.type !== 'service_worker' &&
+      this.#targetInfo.type !== 'shared_worker'
+    ) {
+      return null;
+    }
+    if (!this.#workerPromise) {
+      // TODO(einbinder): Make workers send their console logs.
+      this.#workerPromise = (
+        this.#session
+          ? Promise.resolve(this.#session)
+          : this.#sessionFactory(false)
+      ).then(client => {
+        return new WebWorker(
+          client,
+          this.#targetInfo.url,
+          () => {} /* consoleAPICalled */,
+          () => {} /* exceptionThrown */
+        );
+      });
+    }
+    return this.#workerPromise;
+  }
+
+  url(): string {
+    return this.#targetInfo.url;
+  }
+
+  /**
+   * Identifies what kind of target this is.
+   *
+   * @remarks
+   *
+   * See {@link https://developer.chrome.com/extensions/background_pages | docs} for more info about background pages.
+   */
+  type():
+    | 'page'
+    | 'background_page'
+    | 'service_worker'
+    | 'shared_worker'
+    | 'other'
+    | 'browser'
+    | 'webview' {
+    const type = this.#targetInfo.type;
+    if (
+      type === 'page' ||
+      type === 'background_page' ||
+      type === 'service_worker' ||
+      type === 'shared_worker' ||
+      type === 'browser' ||
+      type === 'webview'
+    ) {
+      return type;
+    }
+    return 'other';
+  }
+
+  /**
+   * Get the browser the target belongs to.
+   */
+  browser(): Browser {
+    return this.#browserContext.browser();
+  }
+
+  /**
+   * Get the browser context the target belongs to.
+   */
+  browserContext(): BrowserContext {
+    return this.#browserContext;
+  }
+
+  /**
+   * Get the target that opened this target. Top-level targets return `null`.
+   */
+  opener(): Target | undefined {
+    const {openerId} = this.#targetInfo;
+    if (!openerId) {
+      return;
+    }
+    return this.browser()._targets.get(openerId);
+  }
+
+  /**
+   * @internal
+   */
+  _targetInfoChanged(targetInfo: Protocol.Target.TargetInfo): void {
+    this.#targetInfo = targetInfo;
+
+    if (
+      !this._isInitialized &&
+      (!this._isPageTargetCallback(this.#targetInfo) ||
+        this.#targetInfo.url !== '')
+    ) {
+      this._isInitialized = true;
+      this._initializedCallback(true);
+      return;
+    }
+  }
+}
diff --git a/remote/test/puppeteer/src/common/TargetManager.ts b/remote/test/puppeteer/src/common/TargetManager.ts
new file mode 100644
index 0000000000..1b82599ada
--- /dev/null
+++ b/remote/test/puppeteer/src/common/TargetManager.ts
@@ -0,0 +1,71 @@
+/**
+ * Copyright 2022 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import Protocol from 'devtools-protocol';
+import {CDPSession} from './Connection.js';
+import {EventEmitter} from './EventEmitter.js';
+import {Target} from './Target.js';
+
+/**
+ * @internal
+ */
+export type TargetFactory = (
+  targetInfo: Protocol.Target.TargetInfo,
+  session?: CDPSession
+) => Target;
+
+/**
+ * @internal
+ */
+export type TargetInterceptor = (
+  createdTarget: Target,
+  parentTarget: Target | null
+) => Promise<void>;
+
+/**
+ * TargetManager encapsulates all interactions with CDP targets and is
+ * responsible for coordinating the configuration of targets with the rest of
+ * Puppeteer. Code outside of this class should not subscribe `Target.*` events
+ * and only use the TargetManager events.
+ *
+ * There are two implementations: one for Chrome that uses CDP's auto-attach
+ * mechanism and one for Firefox because Firefox does not support auto-attach.
+ *
+ * @internal
+ */
+export interface TargetManager extends EventEmitter {
+  getAvailableTargets(): Map<string, Target>;
+  initialize(): Promise<void>;
+  dispose(): void;
+  addTargetInterceptor(
+    session: CDPSession,
+    interceptor: TargetInterceptor
+  ): void;
+  removeTargetInterceptor(
+    session: CDPSession,
+    interceptor: TargetInterceptor
+  ): void;
+}
+
+/**
+ * @internal
+ */
+export const enum TargetManagerEmittedEvents {
+  TargetDiscovered = 'targetDiscovered',
+  TargetAvailable = 'targetAvailable',
+  TargetGone = 'targetGone',
+  TargetChanged = 'targetChanged',
+}
diff --git a/remote/test/puppeteer/src/common/TaskQueue.ts b/remote/test/puppeteer/src/common/TaskQueue.ts
new file mode 100644
index 0000000000..97cfe7c769
--- /dev/null
+++ b/remote/test/puppeteer/src/common/TaskQueue.ts
@@ -0,0 +1,39 @@
+/**
+ * Copyright 2020 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * @internal
+ */
+export class TaskQueue {
+  #chain: Promise<void>;
+
+  constructor() {
+    this.#chain = Promise.resolve();
+  }
+
+  postTask<T>(task: () => Promise<T>): Promise<T> {
+    const result = this.#chain.then(task);
+    this.#chain = result.then(
+      () => {
+        return undefined;
+      },
+      () => {
+        return undefined;
+      }
+    );
+    return result;
+  }
+}
diff --git a/remote/test/puppeteer/src/common/TimeoutSettings.ts b/remote/test/puppeteer/src/common/TimeoutSettings.ts
new file mode 100644
index 0000000000..97acc70147
--- /dev/null
+++ b/remote/test/puppeteer/src/common/TimeoutSettings.ts
@@ -0,0 +1,55 @@
+/**
+ * Copyright 2019 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+const DEFAULT_TIMEOUT = 30000;
+
+/**
+ * @internal
+ */
+export class TimeoutSettings {
+  #defaultTimeout: number | null;
+  #defaultNavigationTimeout: number | null;
+
+  constructor() {
+    this.#defaultTimeout = null;
+    this.#defaultNavigationTimeout = null;
+  }
+
+  setDefaultTimeout(timeout: number): void {
+    this.#defaultTimeout = timeout;
+  }
+
+  setDefaultNavigationTimeout(timeout: number): void {
+    this.#defaultNavigationTimeout = timeout;
+  }
+
+  navigationTimeout(): number {
+    if (this.#defaultNavigationTimeout !== null) {
+      return this.#defaultNavigationTimeout;
+    }
+    if (this.#defaultTimeout !== null) {
+      return this.#defaultTimeout;
+    }
+    return DEFAULT_TIMEOUT;
+  }
+
+  timeout(): number {
+    if (this.#defaultTimeout !== null) {
+      return this.#defaultTimeout;
+    }
+    return DEFAULT_TIMEOUT;
+  }
+}
diff --git a/remote/test/puppeteer/src/common/Tracing.ts b/remote/test/puppeteer/src/common/Tracing.ts
new file mode 100644
index 0000000000..500e17269b
--- /dev/null
+++ b/remote/test/puppeteer/src/common/Tracing.ts
@@ -0,0 +1,143 @@
+/**
+ * Copyright 2017 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import {assert} from '../util/assert.js';
+import {getReadableAsBuffer, getReadableFromProtocolStream} from './util.js';
+import {isErrorLike} from '../util/ErrorLike.js';
+import {CDPSession} from './Connection.js';
+
+/**
+ * @public
+ */
+export interface TracingOptions {
+  path?: string;
+  screenshots?: boolean;
+  categories?: string[];
+}
+
+/**
+ * The Tracing class exposes the tracing audit interface.
+ * @remarks
+ * You can use `tracing.start` and `tracing.stop` to create a trace file
+ * which can be opened in Chrome DevTools or {@link https://chromedevtools.github.io/timeline-viewer/ | timeline viewer}.
+ *
+ * @example
+ *
+ * ```ts
+ * await page.tracing.start({path: 'trace.json'});
+ * await page.goto('https://www.google.com');
+ * await page.tracing.stop();
+ * ```
+ *
+ * @public
+ */
+export class Tracing {
+  #client: CDPSession;
+  #recording = false;
+  #path?: string;
+
+  /**
+   * @internal
+   */
+  constructor(client: CDPSession) {
+    this.#client = client;
+  }
+
+  /**
+   * Starts a trace for the current page.
+   * @remarks
+   * Only one trace can be active at a time per browser.
+   *
+   * @param options - Optional `TracingOptions`.
+   */
+  async start(options: TracingOptions = {}): Promise<void> {
+    assert(
+      !this.#recording,
+      'Cannot start recording trace while already recording trace.'
+    );
+
+    const defaultCategories = [
+      '-*',
+      'devtools.timeline',
+      'v8.execute',
+      'disabled-by-default-devtools.timeline',
+      'disabled-by-default-devtools.timeline.frame',
+      'toplevel',
+      'blink.console',
+      'blink.user_timing',
+      'latencyInfo',
+      'disabled-by-default-devtools.timeline.stack',
+      'disabled-by-default-v8.cpu_profiler',
+    ];
+    const {path, screenshots = false, categories = defaultCategories} = options;
+
+    if (screenshots) {
+      categories.push('disabled-by-default-devtools.screenshot');
+    }
+
+    const excludedCategories = categories
+      .filter(cat => {
+        return cat.startsWith('-');
+      })
+      .map(cat => {
+        return cat.slice(1);
+      });
+    const includedCategories = categories.filter(cat => {
+      return !cat.startsWith('-');
+    });
+
+    this.#path = path;
+    this.#recording = true;
+    await this.#client.send('Tracing.start', {
+      transferMode: 'ReturnAsStream',
+      traceConfig: {
+        excludedCategories,
+        includedCategories,
+      },
+    });
+  }
+
+  /**
+   * Stops a trace started with the `start` method.
+   * @returns Promise which resolves to buffer with trace data.
+   */
+  async stop(): Promise<Buffer | undefined> {
+    let resolve: (value: Buffer | undefined) => void;
+    let reject: (err: Error) => void;
+    const contentPromise = new Promise<Buffer | undefined>((x, y) => {
+      resolve = x;
+      reject = y;
+    });
+    this.#client.once('Tracing.tracingComplete', async event => {
+      try {
+        const readable = await getReadableFromProtocolStream(
+          this.#client,
+          event.stream
+        );
+        const buffer = await getReadableAsBuffer(readable, this.#path);
+        resolve(buffer ?? undefined);
+      } catch (error) {
+        if (isErrorLike(error)) {
+          reject(error);
+        } else {
+          reject(new Error(`Unknown error: ${error}`));
+        }
+      }
+    });
+    await this.#client.send('Tracing.end');
+    this.#recording = false;
+    return contentPromise;
+  }
+}
diff --git a/remote/test/puppeteer/src/common/USKeyboardLayout.ts b/remote/test/puppeteer/src/common/USKeyboardLayout.ts
new file mode 100644
index 0000000000..f6a042e5ce
--- /dev/null
+++ b/remote/test/puppeteer/src/common/USKeyboardLayout.ts
@@ -0,0 +1,681 @@
+/**
+ * Copyright 2017 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the 'License');
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an 'AS IS' BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * @internal
+ */
+export interface KeyDefinition {
+  keyCode?: number;
+  shiftKeyCode?: number;
+  key?: string;
+  shiftKey?: string;
+  code?: string;
+  text?: string;
+  shiftText?: string;
+  location?: number;
+}
+
+/**
+ * All the valid keys that can be passed to functions that take user input, such
+ * as {@link Keyboard.press | keyboard.press }
+ *
+ * @public
+ */
+export type KeyInput =
+  | '0'
+  | '1'
+  | '2'
+  | '3'
+  | '4'
+  | '5'
+  | '6'
+  | '7'
+  | '8'
+  | '9'
+  | 'Power'
+  | 'Eject'
+  | 'Abort'
+  | 'Help'
+  | 'Backspace'
+  | 'Tab'
+  | 'Numpad5'
+  | 'NumpadEnter'
+  | 'Enter'
+  | '\r'
+  | '\n'
+  | 'ShiftLeft'
+  | 'ShiftRight'
+  | 'ControlLeft'
+  | 'ControlRight'
+  | 'AltLeft'
+  | 'AltRight'
+  | 'Pause'
+  | 'CapsLock'
+  | 'Escape'
+  | 'Convert'
+  | 'NonConvert'
+  | 'Space'
+  | 'Numpad9'
+  | 'PageUp'
+  | 'Numpad3'
+  | 'PageDown'
+  | 'End'
+  | 'Numpad1'
+  | 'Home'
+  | 'Numpad7'
+  | 'ArrowLeft'
+  | 'Numpad4'
+  | 'Numpad8'
+  | 'ArrowUp'
+  | 'ArrowRight'
+  | 'Numpad6'
+  | 'Numpad2'
+  | 'ArrowDown'
+  | 'Select'
+  | 'Open'
+  | 'PrintScreen'
+  | 'Insert'
+  | 'Numpad0'
+  | 'Delete'
+  | 'NumpadDecimal'
+  | 'Digit0'
+  | 'Digit1'
+  | 'Digit2'
+  | 'Digit3'
+  | 'Digit4'
+  | 'Digit5'
+  | 'Digit6'
+  | 'Digit7'
+  | 'Digit8'
+  | 'Digit9'
+  | 'KeyA'
+  | 'KeyB'
+  | 'KeyC'
+  | 'KeyD'
+  | 'KeyE'
+  | 'KeyF'
+  | 'KeyG'
+  | 'KeyH'
+  | 'KeyI'
+  | 'KeyJ'
+  | 'KeyK'
+  | 'KeyL'
+  | 'KeyM'
+  | 'KeyN'
+  | 'KeyO'
+  | 'KeyP'
+  | 'KeyQ'
+  | 'KeyR'
+  | 'KeyS'
+  | 'KeyT'
+  | 'KeyU'
+  | 'KeyV'
+  | 'KeyW'
+  | 'KeyX'
+  | 'KeyY'
+  | 'KeyZ'
+  | 'MetaLeft'
+  | 'MetaRight'
+  | 'ContextMenu'
+  | 'NumpadMultiply'
+  | 'NumpadAdd'
+  | 'NumpadSubtract'
+  | 'NumpadDivide'
+  | 'F1'
+  | 'F2'
+  | 'F3'
+  | 'F4'
+  | 'F5'
+  | 'F6'
+  | 'F7'
+  | 'F8'
+  | 'F9'
+  | 'F10'
+  | 'F11'
+  | 'F12'
+  | 'F13'
+  | 'F14'
+  | 'F15'
+  | 'F16'
+  | 'F17'
+  | 'F18'
+  | 'F19'
+  | 'F20'
+  | 'F21'
+  | 'F22'
+  | 'F23'
+  | 'F24'
+  | 'NumLock'
+  | 'ScrollLock'
+  | 'AudioVolumeMute'
+  | 'AudioVolumeDown'
+  | 'AudioVolumeUp'
+  | 'MediaTrackNext'
+  | 'MediaTrackPrevious'
+  | 'MediaStop'
+  | 'MediaPlayPause'
+  | 'Semicolon'
+  | 'Equal'
+  | 'NumpadEqual'
+  | 'Comma'
+  | 'Minus'
+  | 'Period'
+  | 'Slash'
+  | 'Backquote'
+  | 'BracketLeft'
+  | 'Backslash'
+  | 'BracketRight'
+  | 'Quote'
+  | 'AltGraph'
+  | 'Props'
+  | 'Cancel'
+  | 'Clear'
+  | 'Shift'
+  | 'Control'
+  | 'Alt'
+  | 'Accept'
+  | 'ModeChange'
+  | ' '
+  | 'Print'
+  | 'Execute'
+  | '\u0000'
+  | 'a'
+  | 'b'
+  | 'c'
+  | 'd'
+  | 'e'
+  | 'f'
+  | 'g'
+  | 'h'
+  | 'i'
+  | 'j'
+  | 'k'
+  | 'l'
+  | 'm'
+  | 'n'
+  | 'o'
+  | 'p'
+  | 'q'
+  | 'r'
+  | 's'
+  | 't'
+  | 'u'
+  | 'v'
+  | 'w'
+  | 'x'
+  | 'y'
+  | 'z'
+  | 'Meta'
+  | '*'
+  | '+'
+  | '-'
+  | '/'
+  | ';'
+  | '='
+  | ','
+  | '.'
+  | '`'
+  | '['
+  | '\\'
+  | ']'
+  | "'"
+  | 'Attn'
+  | 'CrSel'
+  | 'ExSel'
+  | 'EraseEof'
+  | 'Play'
+  | 'ZoomOut'
+  | ')'
+  | '!'
+  | '@'
+  | '#'
+  | '$'
+  | '%'
+  | '^'
+  | '&'
+  | '('
+  | 'A'
+  | 'B'
+  | 'C'
+  | 'D'
+  | 'E'
+  | 'F'
+  | 'G'
+  | 'H'
+  | 'I'
+  | 'J'
+  | 'K'
+  | 'L'
+  | 'M'
+  | 'N'
+  | 'O'
+  | 'P'
+  | 'Q'
+  | 'R'
+  | 'S'
+  | 'T'
+  | 'U'
+  | 'V'
+  | 'W'
+  | 'X'
+  | 'Y'
+  | 'Z'
+  | ':'
+  | '<'
+  | '_'
+  | '>'
+  | '?'
+  | '~'
+  | '{'
+  | '|'
+  | '}'
+  | '"'
+  | 'SoftLeft'
+  | 'SoftRight'
+  | 'Camera'
+  | 'Call'
+  | 'EndCall'
+  | 'VolumeDown'
+  | 'VolumeUp';
+
+/**
+ * @internal
+ */
+export const _keyDefinitions: Readonly<Record<KeyInput, KeyDefinition>> = {
+  '0': {keyCode: 48, key: '0', code: 'Digit0'},
+  '1': {keyCode: 49, key: '1', code: 'Digit1'},
+  '2': {keyCode: 50, key: '2', code: 'Digit2'},
+  '3': {keyCode: 51, key: '3', code: 'Digit3'},
+  '4': {keyCode: 52, key: '4', code: 'Digit4'},
+  '5': {keyCode: 53, key: '5', code: 'Digit5'},
+  '6': {keyCode: 54, key: '6', code: 'Digit6'},
+  '7': {keyCode: 55, key: '7', code: 'Digit7'},
+  '8': {keyCode: 56, key: '8', code: 'Digit8'},
+  '9': {keyCode: 57, key: '9', code: 'Digit9'},
+  Power: {key: 'Power', code: 'Power'},
+  Eject: {key: 'Eject', code: 'Eject'},
+  Abort: {keyCode: 3, code: 'Abort', key: 'Cancel'},
+  Help: {keyCode: 6, code: 'Help', key: 'Help'},
+  Backspace: {keyCode: 8, code: 'Backspace', key: 'Backspace'},
+  Tab: {keyCode: 9, code: 'Tab', key: 'Tab'},
+  Numpad5: {
+    keyCode: 12,
+    shiftKeyCode: 101,
+    key: 'Clear',
+    code: 'Numpad5',
+    shiftKey: '5',
+    location: 3,
+  },
+  NumpadEnter: {
+    keyCode: 13,
+    code: 'NumpadEnter',
+    key: 'Enter',
+    text: '\r',
+    location: 3,
+  },
+  Enter: {keyCode: 13, code: 'Enter', key: 'Enter', text: '\r'},
+  '\r': {keyCode: 13, code: 'Enter', key: 'Enter', text: '\r'},
+  '\n': {keyCode: 13, code: 'Enter', key: 'Enter', text: '\r'},
+  ShiftLeft: {keyCode: 16, code: 'ShiftLeft', key: 'Shift', location: 1},
+  ShiftRight: {keyCode: 16, code: 'ShiftRight', key: 'Shift', location: 2},
+  ControlLeft: {
+    keyCode: 17,
+    code: 'ControlLeft',
+    key: 'Control',
+    location: 1,
+  },
+  ControlRight: {
+    keyCode: 17,
+    code: 'ControlRight',
+    key: 'Control',
+    location: 2,
+  },
+  AltLeft: {keyCode: 18, code: 'AltLeft', key: 'Alt', location: 1},
+  AltRight: {keyCode: 18, code: 'AltRight', key: 'Alt', location: 2},
+  Pause: {keyCode: 19, code: 'Pause', key: 'Pause'},
+  CapsLock: {keyCode: 20, code: 'CapsLock', key: 'CapsLock'},
+  Escape: {keyCode: 27, code: 'Escape', key: 'Escape'},
+  Convert: {keyCode: 28, code: 'Convert', key: 'Convert'},
+  NonConvert: {keyCode: 29, code: 'NonConvert', key: 'NonConvert'},
+  Space: {keyCode: 32, code: 'Space', key: ' '},
+  Numpad9: {
+    keyCode: 33,
+    shiftKeyCode: 105,
+    key: 'PageUp',
+    code: 'Numpad9',
+    shiftKey: '9',
+    location: 3,
+  },
+  PageUp: {keyCode: 33, code: 'PageUp', key: 'PageUp'},
+  Numpad3: {
+    keyCode: 34,
+    shiftKeyCode: 99,
+    key: 'PageDown',
+    code: 'Numpad3',
+    shiftKey: '3',
+    location: 3,
+  },
+  PageDown: {keyCode: 34, code: 'PageDown', key: 'PageDown'},
+  End: {keyCode: 35, code: 'End', key: 'End'},
+  Numpad1: {
+    keyCode: 35,
+    shiftKeyCode: 97,
+    key: 'End',
+    code: 'Numpad1',
+    shiftKey: '1',
+    location: 3,
+  },
+  Home: {keyCode: 36, code: 'Home', key: 'Home'},
+  Numpad7: {
+    keyCode: 36,
+    shiftKeyCode: 103,
+    key: 'Home',
+    code: 'Numpad7',
+    shiftKey: '7',
+    location: 3,
+  },
+  ArrowLeft: {keyCode: 37, code: 'ArrowLeft', key: 'ArrowLeft'},
+  Numpad4: {
+    keyCode: 37,
+    shiftKeyCode: 100,
+    key: 'ArrowLeft',
+    code: 'Numpad4',
+    shiftKey: '4',
+    location: 3,
+  },
+  Numpad8: {
+    keyCode: 38,
+    shiftKeyCode: 104,
+    key: 'ArrowUp',
+    code: 'Numpad8',
+    shiftKey: '8',
+    location: 3,
+  },
+  ArrowUp: {keyCode: 38, code: 'ArrowUp', key: 'ArrowUp'},
+  ArrowRight: {keyCode: 39, code: 'ArrowRight', key: 'ArrowRight'},
+  Numpad6: {
+    keyCode: 39,
+    shiftKeyCode: 102,
+    key: 'ArrowRight',
+    code: 'Numpad6',
+    shiftKey: '6',
+    location: 3,
+  },
+  Numpad2: {
+    keyCode: 40,
+    shiftKeyCode: 98,
+    key: 'ArrowDown',
+    code: 'Numpad2',
+    shiftKey: '2',
+    location: 3,
+  },
+  ArrowDown: {keyCode: 40, code: 'ArrowDown', key: 'ArrowDown'},
+  Select: {keyCode: 41, code: 'Select', key: 'Select'},
+  Open: {keyCode: 43, code: 'Open', key: 'Execute'},
+  PrintScreen: {keyCode: 44, code: 'PrintScreen', key: 'PrintScreen'},
+  Insert: {keyCode: 45, code: 'Insert', key: 'Insert'},
+  Numpad0: {
+    keyCode: 45,
+    shiftKeyCode: 96,
+    key: 'Insert',
+    code: 'Numpad0',
+    shiftKey: '0',
+    location: 3,
+  },
+  Delete: {keyCode: 46, code: 'Delete', key: 'Delete'},
+  NumpadDecimal: {
+    keyCode: 46,
+    shiftKeyCode: 110,
+    code: 'NumpadDecimal',
+    key: '\u0000',
+    shiftKey: '.',
+    location: 3,
+  },
+  Digit0: {keyCode: 48, code: 'Digit0', shiftKey: ')', key: '0'},
+  Digit1: {keyCode: 49, code: 'Digit1', shiftKey: '!', key: '1'},
+  Digit2: {keyCode: 50, code: 'Digit2', shiftKey: '@', key: '2'},
+  Digit3: {keyCode: 51, code: 'Digit3', shiftKey: '#', key: '3'},
+  Digit4: {keyCode: 52, code: 'Digit4', shiftKey: '$', key: '4'},
+  Digit5: {keyCode: 53, code: 'Digit5', shiftKey: '%', key: '5'},
+  Digit6: {keyCode: 54, code: 'Digit6', shiftKey: '^', key: '6'},
+  Digit7: {keyCode: 55, code: 'Digit7', shiftKey: '&', key: '7'},
+  Digit8: {keyCode: 56, code: 'Digit8', shiftKey: '*', key: '8'},
+  Digit9: {keyCode: 57, code: 'Digit9', shiftKey: '(', key: '9'},
+  KeyA: {keyCode: 65, code: 'KeyA', shiftKey: 'A', key: 'a'},
+  KeyB: {keyCode: 66, code: 'KeyB', shiftKey: 'B', key: 'b'},
+  KeyC: {keyCode: 67, code: 'KeyC', shiftKey: 'C', key: 'c'},
+  KeyD: {keyCode: 68, code: 'KeyD', shiftKey: 'D', key: 'd'},
+  KeyE: {keyCode: 69, code: 'KeyE', shiftKey: 'E', key: 'e'},
+  KeyF: {keyCode: 70, code: 'KeyF', shiftKey: 'F', key: 'f'},
+  KeyG: {keyCode: 71, code: 'KeyG', shiftKey: 'G', key: 'g'},
+  KeyH: {keyCode: 72, code: 'KeyH', shiftKey: 'H', key: 'h'},
+  KeyI: {keyCode: 73, code: 'KeyI', shiftKey: 'I', key: 'i'},
+  KeyJ: {keyCode: 74, code: 'KeyJ', shiftKey: 'J', key: 'j'},
+  KeyK: {keyCode: 75, code: 'KeyK', shiftKey: 'K', key: 'k'},
+  KeyL: {keyCode: 76, code: 'KeyL', shiftKey: 'L', key: 'l'},
+  KeyM: {keyCode: 77, code: 'KeyM', shiftKey: 'M', key: 'm'},
+  KeyN: {keyCode: 78, code: 'KeyN', shiftKey: 'N', key: 'n'},
+  KeyO: {keyCode: 79, code: 'KeyO', shiftKey: 'O', key: 'o'},
+  KeyP: {keyCode: 80, code: 'KeyP', shiftKey: 'P', key: 'p'},
+  KeyQ: {keyCode: 81, code: 'KeyQ', shiftKey: 'Q', key: 'q'},
+  KeyR: {keyCode: 82, code: 'KeyR', shiftKey: 'R', key: 'r'},
+  KeyS: {keyCode: 83, code: 'KeyS', shiftKey: 'S', key: 's'},
+  KeyT: {keyCode: 84, code: 'KeyT', shiftKey: 'T', key: 't'},
+  KeyU: {keyCode: 85, code: 'KeyU', shiftKey: 'U', key: 'u'},
+  KeyV: {keyCode: 86, code: 'KeyV', shiftKey: 'V', key: 'v'},
+  KeyW: {keyCode: 87, code: 'KeyW', shiftKey: 'W', key: 'w'},
+  KeyX: {keyCode: 88, code: 'KeyX', shiftKey: 'X', key: 'x'},
+  KeyY: {keyCode: 89, code: 'KeyY', shiftKey: 'Y', key: 'y'},
+  KeyZ: {keyCode: 90, code: 'KeyZ', shiftKey: 'Z', key: 'z'},
+  MetaLeft: {keyCode: 91, code: 'MetaLeft', key: 'Meta', location: 1},
+  MetaRight: {keyCode: 92, code: 'MetaRight', key: 'Meta', location: 2},
+  ContextMenu: {keyCode: 93, code: 'ContextMenu', key: 'ContextMenu'},
+  NumpadMultiply: {
+    keyCode: 106,
+    code: 'NumpadMultiply',
+    key: '*',
+    location: 3,
+  },
+  NumpadAdd: {keyCode: 107, code: 'NumpadAdd', key: '+', location: 3},
+  NumpadSubtract: {
+    keyCode: 109,
+    code: 'NumpadSubtract',
+    key: '-',
+    location: 3,
+  },
+  NumpadDivide: {keyCode: 111, code: 'NumpadDivide', key: '/', location: 3},
+  F1: {keyCode: 112, code: 'F1', key: 'F1'},
+  F2: {keyCode: 113, code: 'F2', key: 'F2'},
+  F3: {keyCode: 114, code: 'F3', key: 'F3'},
+  F4: {keyCode: 115, code: 'F4', key: 'F4'},
+  F5: {keyCode: 116, code: 'F5', key: 'F5'},
+  F6: {keyCode: 117, code: 'F6', key: 'F6'},
+  F7: {keyCode: 118, code: 'F7', key: 'F7'},
+  F8: {keyCode: 119, code: 'F8', key: 'F8'},
+  F9: {keyCode: 120, code: 'F9', key: 'F9'},
+  F10: {keyCode: 121, code: 'F10', key: 'F10'},
+  F11: {keyCode: 122, code: 'F11', key: 'F11'},
+  F12: {keyCode: 123, code: 'F12', key: 'F12'},
+  F13: {keyCode: 124, code: 'F13', key: 'F13'},
+  F14: {keyCode: 125, code: 'F14', key: 'F14'},
+  F15: {keyCode: 126, code: 'F15', key: 'F15'},
+  F16: {keyCode: 127, code: 'F16', key: 'F16'},
+  F17: {keyCode: 128, code: 'F17', key: 'F17'},
+  F18: {keyCode: 129, code: 'F18', key: 'F18'},
+  F19: {keyCode: 130, code: 'F19', key: 'F19'},
+  F20: {keyCode: 131, code: 'F20', key: 'F20'},
+  F21: {keyCode: 132, code: 'F21', key: 'F21'},
+  F22: {keyCode: 133, code: 'F22', key: 'F22'},
+  F23: {keyCode: 134, code: 'F23', key: 'F23'},
+  F24: {keyCode: 135, code: 'F24', key: 'F24'},
+  NumLock: {keyCode: 144, code: 'NumLock', key: 'NumLock'},
+  ScrollLock: {keyCode: 145, code: 'ScrollLock', key: 'ScrollLock'},
+  AudioVolumeMute: {
+    keyCode: 173,
+    code: 'AudioVolumeMute',
+    key: 'AudioVolumeMute',
+  },
+  AudioVolumeDown: {
+    keyCode: 174,
+    code: 'AudioVolumeDown',
+    key: 'AudioVolumeDown',
+  },
+  AudioVolumeUp: {keyCode: 175, code: 'AudioVolumeUp', key: 'AudioVolumeUp'},
+  MediaTrackNext: {
+    keyCode: 176,
+    code: 'MediaTrackNext',
+    key: 'MediaTrackNext',
+  },
+  MediaTrackPrevious: {
+    keyCode: 177,
+    code: 'MediaTrackPrevious',
+    key: 'MediaTrackPrevious',
+  },
+  MediaStop: {keyCode: 178, code: 'MediaStop', key: 'MediaStop'},
+  MediaPlayPause: {
+    keyCode: 179,
+    code: 'MediaPlayPause',
+    key: 'MediaPlayPause',
+  },
+  Semicolon: {keyCode: 186, code: 'Semicolon', shiftKey: ':', key: ';'},
+  Equal: {keyCode: 187, code: 'Equal', shiftKey: '+', key: '='},
+  NumpadEqual: {keyCode: 187, code: 'NumpadEqual', key: '=', location: 3},
+  Comma: {keyCode: 188, code: 'Comma', shiftKey: '<', key: ','},
+  Minus: {keyCode: 189, code: 'Minus', shiftKey: '_', key: '-'},
+  Period: {keyCode: 190, code: 'Period', shiftKey: '>', key: '.'},
+  Slash: {keyCode: 191, code: 'Slash', shiftKey: '?', key: '/'},
+  Backquote: {keyCode: 192, code: 'Backquote', shiftKey: '~', key: '`'},
+  BracketLeft: {keyCode: 219, code: 'BracketLeft', shiftKey: '{', key: '['},
+  Backslash: {keyCode: 220, code: 'Backslash', shiftKey: '|', key: '\\'},
+  BracketRight: {keyCode: 221, code: 'BracketRight', shiftKey: '}', key: ']'},
+  Quote: {keyCode: 222, code: 'Quote', shiftKey: '"', key: "'"},
+  AltGraph: {keyCode: 225, code: 'AltGraph', key: 'AltGraph'},
+  Props: {keyCode: 247, code: 'Props', key: 'CrSel'},
+  Cancel: {keyCode: 3, key: 'Cancel', code: 'Abort'},
+  Clear: {keyCode: 12, key: 'Clear', code: 'Numpad5', location: 3},
+  Shift: {keyCode: 16, key: 'Shift', code: 'ShiftLeft', location: 1},
+  Control: {keyCode: 17, key: 'Control', code: 'ControlLeft', location: 1},
+  Alt: {keyCode: 18, key: 'Alt', code: 'AltLeft', location: 1},
+  Accept: {keyCode: 30, key: 'Accept'},
+  ModeChange: {keyCode: 31, key: 'ModeChange'},
+  ' ': {keyCode: 32, key: ' ', code: 'Space'},
+  Print: {keyCode: 42, key: 'Print'},
+  Execute: {keyCode: 43, key: 'Execute', code: 'Open'},
+  '\u0000': {keyCode: 46, key: '\u0000', code: 'NumpadDecimal', location: 3},
+  a: {keyCode: 65, key: 'a', code: 'KeyA'},
+  b: {keyCode: 66, key: 'b', code: 'KeyB'},
+  c: {keyCode: 67, key: 'c', code: 'KeyC'},
+  d: {keyCode: 68, key: 'd', code: 'KeyD'},
+  e: {keyCode: 69, key: 'e', code: 'KeyE'},
+  f: {keyCode: 70, key: 'f', code: 'KeyF'},
+  g: {keyCode: 71, key: 'g', code: 'KeyG'},
+  h: {keyCode: 72, key: 'h', code: 'KeyH'},
+  i: {keyCode: 73, key: 'i', code: 'KeyI'},
+  j: {keyCode: 74, key: 'j', code: 'KeyJ'},
+  k: {keyCode: 75, key: 'k', code: 'KeyK'},
+  l: {keyCode: 76, key: 'l', code: 'KeyL'},
+  m: {keyCode: 77, key: 'm', code: 'KeyM'},
+  n: {keyCode: 78, key: 'n', code: 'KeyN'},
+  o: {keyCode: 79, key: 'o', code: 'KeyO'},
+  p: {keyCode: 80, key: 'p', code: 'KeyP'},
+  q: {keyCode: 81, key: 'q', code: 'KeyQ'},
+  r: {keyCode: 82, key: 'r', code: 'KeyR'},
+  s: {keyCode: 83, key: 's', code: 'KeyS'},
+  t: {keyCode: 84, key: 't', code: 'KeyT'},
+  u: {keyCode: 85, key: 'u', code: 'KeyU'},
+  v: {keyCode: 86, key: 'v', code: 'KeyV'},
+  w: {keyCode: 87, key: 'w', code: 'KeyW'},
+  x: {keyCode: 88, key: 'x', code: 'KeyX'},
+  y: {keyCode: 89, key: 'y', code: 'KeyY'},
+  z: {keyCode: 90, key: 'z', code: 'KeyZ'},
+  Meta: {keyCode: 91, key: 'Meta', code: 'MetaLeft', location: 1},
+  '*': {keyCode: 106, key: '*', code: 'NumpadMultiply', location: 3},
+  '+': {keyCode: 107, key: '+', code: 'NumpadAdd', location: 3},
+  '-': {keyCode: 109, key: '-', code: 'NumpadSubtract', location: 3},
+  '/': {keyCode: 111, key: '/', code: 'NumpadDivide', location: 3},
+  ';': {keyCode: 186, key: ';', code: 'Semicolon'},
+  '=': {keyCode: 187, key: '=', code: 'Equal'},
+  ',': {keyCode: 188, key: ',', code: 'Comma'},
+  '.': {keyCode: 190, key: '.', code: 'Period'},
+  '`': {keyCode: 192, key: '`', code: 'Backquote'},
+  '[': {keyCode: 219, key: '[', code: 'BracketLeft'},
+  '\\': {keyCode: 220, key: '\\', code: 'Backslash'},
+  ']': {keyCode: 221, key: ']', code: 'BracketRight'},
+  "'": {keyCode: 222, key: "'", code: 'Quote'},
+  Attn: {keyCode: 246, key: 'Attn'},
+  CrSel: {keyCode: 247, key: 'CrSel', code: 'Props'},
+  ExSel: {keyCode: 248, key: 'ExSel'},
+  EraseEof: {keyCode: 249, key: 'EraseEof'},
+  Play: {keyCode: 250, key: 'Play'},
+  ZoomOut: {keyCode: 251, key: 'ZoomOut'},
+  ')': {keyCode: 48, key: ')', code: 'Digit0'},
+  '!': {keyCode: 49, key: '!', code: 'Digit1'},
+  '@': {keyCode: 50, key: '@', code: 'Digit2'},
+  '#': {keyCode: 51, key: '#', code: 'Digit3'},
+  $: {keyCode: 52, key: '$', code: 'Digit4'},
+  '%': {keyCode: 53, key: '%', code: 'Digit5'},
+  '^': {keyCode: 54, key: '^', code: 'Digit6'},
+  '&': {keyCode: 55, key: '&', code: 'Digit7'},
+  '(': {keyCode: 57, key: '(', code: 'Digit9'},
+  A: {keyCode: 65, key: 'A', code: 'KeyA'},
+  B: {keyCode: 66, key: 'B', code: 'KeyB'},
+  C: {keyCode: 67, key: 'C', code: 'KeyC'},
+  D: {keyCode: 68, key: 'D', code: 'KeyD'},
+  E: {keyCode: 69, key: 'E', code: 'KeyE'},
+  F: {keyCode: 70, key: 'F', code: 'KeyF'},
+  G: {keyCode: 71, key: 'G', code: 'KeyG'},
+  H: {keyCode: 72, key: 'H', code: 'KeyH'},
+  I: {keyCode: 73, key: 'I', code: 'KeyI'},
+  J: {keyCode: 74, key: 'J', code: 'KeyJ'},
+  K: {keyCode: 75, key: 'K', code: 'KeyK'},
+  L: {keyCode: 76, key: 'L', code: 'KeyL'},
+  M: {keyCode: 77, key: 'M', code: 'KeyM'},
+  N: {keyCode: 78, key: 'N', code: 'KeyN'},
+  O: {keyCode: 79, key: 'O', code: 'KeyO'},
+  P: {keyCode: 80, key: 'P', code: 'KeyP'},
+  Q: {keyCode: 81, key: 'Q', code: 'KeyQ'},
+  R: {keyCode: 82, key: 'R', code: 'KeyR'},
+  S: {keyCode: 83, key: 'S', code: 'KeyS'},
+  T: {keyCode: 84, key: 'T', code: 'KeyT'},
+  U: {keyCode: 85, key: 'U', code: 'KeyU'},
+  V: {keyCode: 86, key: 'V', code: 'KeyV'},
+  W: {keyCode: 87, key: 'W', code: 'KeyW'},
+  X: {keyCode: 88, key: 'X', code: 'KeyX'},
+  Y: {keyCode: 89, key: 'Y', code: 'KeyY'},
+  Z: {keyCode: 90, key: 'Z', code: 'KeyZ'},
+  ':': {keyCode: 186, key: ':', code: 'Semicolon'},
+  '<': {keyCode: 188, key: '<', code: 'Comma'},
+  _: {keyCode: 189, key: '_', code: 'Minus'},
+  '>': {keyCode: 190, key: '>', code: 'Period'},
+  '?': {keyCode: 191, key: '?', code: 'Slash'},
+  '~': {keyCode: 192, key: '~', code: 'Backquote'},
+  '{': {keyCode: 219, key: '{', code: 'BracketLeft'},
+  '|': {keyCode: 220, key: '|', code: 'Backslash'},
+  '}': {keyCode: 221, key: '}', code: 'BracketRight'},
+  '"': {keyCode: 222, key: '"', code: 'Quote'},
+  SoftLeft: {key: 'SoftLeft', code: 'SoftLeft', location: 4},
+  SoftRight: {key: 'SoftRight', code: 'SoftRight', location: 4},
+  Camera: {keyCode: 44, key: 'Camera', code: 'Camera', location: 4},
+  Call: {key: 'Call', code: 'Call', location: 4},
+  EndCall: {keyCode: 95, key: 'EndCall', code: 'EndCall', location: 4},
+  VolumeDown: {
+    keyCode: 182,
+    key: 'VolumeDown',
+    code: 'VolumeDown',
+    location: 4,
+  },
+  VolumeUp: {keyCode: 183, key: 'VolumeUp', code: 'VolumeUp', location: 4},
+};
diff --git a/remote/test/puppeteer/src/common/WebWorker.ts b/remote/test/puppeteer/src/common/WebWorker.ts
new file mode 100644
index 0000000000..cfc029c75c
--- /dev/null
+++ b/remote/test/puppeteer/src/common/WebWorker.ts
@@ -0,0 +1,170 @@
+/**
+ * Copyright 2018 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import {Protocol} from 'devtools-protocol';
+import {CDPSession} from './Connection.js';
+import {ConsoleMessageType} from './ConsoleMessage.js';
+import {EvaluateFunc, HandleFor} from './types.js';
+import {EventEmitter} from './EventEmitter.js';
+import {ExecutionContext} from './ExecutionContext.js';
+import {JSHandle} from './JSHandle.js';
+import {debugError} from './util.js';
+import {createDeferredPromise} from '../util/DeferredPromise.js';
+
+/**
+ * @internal
+ */
+export type ConsoleAPICalledCallback = (
+  eventType: ConsoleMessageType,
+  handles: JSHandle[],
+  trace: Protocol.Runtime.StackTrace
+) => void;
+
+/**
+ * @internal
+ */
+export type ExceptionThrownCallback = (
+  details: Protocol.Runtime.ExceptionDetails
+) => void;
+
+/**
+ * This class represents a
+ * {@link https://developer.mozilla.org/en-US/docs/Web/API/Web_Workers_API | WebWorker}.
+ *
+ * @remarks
+ * The events `workercreated` and `workerdestroyed` are emitted on the page
+ * object to signal the worker lifecycle.
+ *
+ * @example
+ *
+ * ```ts
+ * page.on('workercreated', worker =>
+ *   console.log('Worker created: ' + worker.url())
+ * );
+ * page.on('workerdestroyed', worker =>
+ *   console.log('Worker destroyed: ' + worker.url())
+ * );
+ *
+ * console.log('Current workers:');
+ * for (const worker of page.workers()) {
+ *   console.log('  ' + worker.url());
+ * }
+ * ```
+ *
+ * @public
+ */
+export class WebWorker extends EventEmitter {
+  #executionContext = createDeferredPromise<ExecutionContext>();
+
+  #client: CDPSession;
+  #url: string;
+
+  /**
+   * @internal
+   */
+  constructor(
+    client: CDPSession,
+    url: string,
+    consoleAPICalled: ConsoleAPICalledCallback,
+    exceptionThrown: ExceptionThrownCallback
+  ) {
+    super();
+    this.#client = client;
+    this.#url = url;
+
+    this.#client.once('Runtime.executionContextCreated', async event => {
+      const context = new ExecutionContext(client, event.context);
+      this.#executionContext.resolve(context);
+    });
+    this.#client.on('Runtime.consoleAPICalled', async event => {
+      const context = await this.#executionContext;
+      return consoleAPICalled(
+        event.type,
+        event.args.map((object: Protocol.Runtime.RemoteObject) => {
+          return new JSHandle(context, object);
+        }),
+        event.stackTrace
+      );
+    });
+    this.#client.on('Runtime.exceptionThrown', exception => {
+      return exceptionThrown(exception.exceptionDetails);
+    });
+
+    // This might fail if the target is closed before we receive all execution contexts.
+    this.#client.send('Runtime.enable').catch(debugError);
+  }
+
+  /**
+   * @internal
+   */
+  async executionContext(): Promise<ExecutionContext> {
+    return this.#executionContext;
+  }
+
+  /**
+   * @returns The URL of this web worker.
+   */
+  url(): string {
+    return this.#url;
+  }
+
+  /**
+   * If the function passed to the `worker.evaluate` returns a Promise, then
+   * `worker.evaluate` would wait for the promise to resolve and return its
+   * value. If the function passed to the `worker.evaluate` returns a
+   * non-serializable value, then `worker.evaluate` resolves to `undefined`.
+   * DevTools Protocol also supports transferring some additional values that
+   * are not serializable by `JSON`: `-0`, `NaN`, `Infinity`, `-Infinity`, and
+   * bigint literals.
+   * Shortcut for `await worker.executionContext()).evaluate(pageFunction, ...args)`.
+   *
+   * @param pageFunction - Function to be evaluated in the worker context.
+   * @param args - Arguments to pass to `pageFunction`.
+   * @returns Promise which resolves to the return value of `pageFunction`.
+   */
+  async evaluate<
+    Params extends unknown[],
+    Func extends EvaluateFunc<Params> = EvaluateFunc<Params>
+  >(
+    pageFunction: Func | string,
+    ...args: Params
+  ): Promise<Awaited<ReturnType<Func>>> {
+    const context = await this.#executionContext;
+    return context.evaluate(pageFunction, ...args);
+  }
+
+  /**
+   * The only difference between `worker.evaluate` and `worker.evaluateHandle`
+   * is that `worker.evaluateHandle` returns in-page object (JSHandle). If the
+   * function passed to the `worker.evaluateHandle` returns a `Promise`, then
+   * `worker.evaluateHandle` would wait for the promise to resolve and return
+   * its value. Shortcut for
+   * `await worker.executionContext()).evaluateHandle(pageFunction, ...args)`
+   *
+   * @param pageFunction - Function to be evaluated in the page context.
+   * @param args - Arguments to pass to `pageFunction`.
+   * @returns Promise which resolves to the return value of `pageFunction`.
+   */
+  async evaluateHandle<
+    Params extends unknown[],
+    Func extends EvaluateFunc<Params> = EvaluateFunc<Params>
+  >(
+    pageFunction: Func | string,
+    ...args: Params
+  ): Promise<HandleFor<Awaited<ReturnType<Func>>>> {
+    const context = await this.#executionContext;
+    return context.evaluateHandle(pageFunction, ...args);
+  }
+}
diff --git a/remote/test/puppeteer/src/common/fetch.ts b/remote/test/puppeteer/src/common/fetch.ts
new file mode 100644
index 0000000000..5f13a35288
--- /dev/null
+++ b/remote/test/puppeteer/src/common/fetch.ts
@@ -0,0 +1,24 @@
+/**
+ * Copyright 2020 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * Gets the global version if we're in the browser, else loads the node-fetch module.
+ *
+ * @internal
+ */
+export const getFetch = async (): Promise<typeof fetch> => {
+  return (globalThis as any).fetch || (await import('cross-fetch')).fetch;
+};
diff --git a/remote/test/puppeteer/src/common/types.ts b/remote/test/puppeteer/src/common/types.ts
new file mode 100644
index 0000000000..8af6f23f29
--- /dev/null
+++ b/remote/test/puppeteer/src/common/types.ts
@@ -0,0 +1,61 @@
+/**
+ * Copyright 2020 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import {JSHandle} from './JSHandle.js';
+import {ElementHandle} from './ElementHandle.js';
+
+/**
+ * @public
+ */
+export type Awaitable<T> = T | PromiseLike<T>;
+
+/**
+ * @public
+ */
+export type HandleFor<T> = T extends Node ? ElementHandle<T> : JSHandle<T>;
+
+/**
+ * @public
+ */
+export type HandleOr<T> = HandleFor<T> | JSHandle<T> | T;
+
+/**
+ * @public
+ */
+export type FlattenHandle<T> = T extends HandleOr<infer U> ? U : never;
+/**
+ * @public
+ */
+export type InnerParams<T extends unknown[]> = {
+  [K in keyof T]: FlattenHandle<T[K]>;
+};
+
+/**
+ * @public
+ */
+export type EvaluateFunc<T extends unknown[]> = (
+  ...params: InnerParams<T>
+) => Awaitable<unknown>;
+
+/**
+ * @public
+ */
+export type NodeFor<Selector extends string> =
+  Selector extends keyof HTMLElementTagNameMap
+    ? HTMLElementTagNameMap[Selector]
+    : Selector extends keyof SVGElementTagNameMap
+    ? SVGElementTagNameMap[Selector]
+    : Element;
diff --git a/remote/test/puppeteer/src/common/util.ts b/remote/test/puppeteer/src/common/util.ts
new file mode 100644
index 0000000000..0b280292ee
--- /dev/null
+++ b/remote/test/puppeteer/src/common/util.ts
@@ -0,0 +1,488 @@
+/**
+ * Copyright 2017 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import {Protocol} from 'devtools-protocol';
+import type {Readable} from 'stream';
+import {isNode} from '../environment.js';
+import {assert} from '../util/assert.js';
+import {isErrorLike} from '../util/ErrorLike.js';
+import {CDPSession} from './Connection.js';
+import {debug} from './Debug.js';
+import {ElementHandle} from './ElementHandle.js';
+import {TimeoutError} from './Errors.js';
+import {CommonEventEmitter} from './EventEmitter.js';
+import {ExecutionContext} from './ExecutionContext.js';
+import {JSHandle} from './JSHandle.js';
+
+/**
+ * @internal
+ */
+export const debugError = debug('puppeteer:error');
+
+/**
+ * @internal
+ */
+export function getExceptionMessage(
+  exceptionDetails: Protocol.Runtime.ExceptionDetails
+): string {
+  if (exceptionDetails.exception) {
+    return (
+      exceptionDetails.exception.description || exceptionDetails.exception.value
+    );
+  }
+  let message = exceptionDetails.text;
+  if (exceptionDetails.stackTrace) {
+    for (const callframe of exceptionDetails.stackTrace.callFrames) {
+      const location =
+        callframe.url +
+        ':' +
+        callframe.lineNumber +
+        ':' +
+        callframe.columnNumber;
+      const functionName = callframe.functionName || '<anonymous>';
+      message += `\n    at ${functionName} (${location})`;
+    }
+  }
+  return message;
+}
+
+/**
+ * @internal
+ */
+export function valueFromRemoteObject(
+  remoteObject: Protocol.Runtime.RemoteObject
+): any {
+  assert(!remoteObject.objectId, 'Cannot extract value when objectId is given');
+  if (remoteObject.unserializableValue) {
+    if (remoteObject.type === 'bigint' && typeof BigInt !== 'undefined') {
+      return BigInt(remoteObject.unserializableValue.replace('n', ''));
+    }
+    switch (remoteObject.unserializableValue) {
+      case '-0':
+        return -0;
+      case 'NaN':
+        return NaN;
+      case 'Infinity':
+        return Infinity;
+      case '-Infinity':
+        return -Infinity;
+      default:
+        throw new Error(
+          'Unsupported unserializable value: ' +
+            remoteObject.unserializableValue
+        );
+    }
+  }
+  return remoteObject.value;
+}
+
+/**
+ * @internal
+ */
+export async function releaseObject(
+  client: CDPSession,
+  remoteObject: Protocol.Runtime.RemoteObject
+): Promise<void> {
+  if (!remoteObject.objectId) {
+    return;
+  }
+  await client
+    .send('Runtime.releaseObject', {objectId: remoteObject.objectId})
+    .catch(error => {
+      // Exceptions might happen in case of a page been navigated or closed.
+      // Swallow these since they are harmless and we don't leak anything in this case.
+      debugError(error);
+    });
+}
+
+/**
+ * @internal
+ */
+export interface PuppeteerEventListener {
+  emitter: CommonEventEmitter;
+  eventName: string | symbol;
+  handler: (...args: any[]) => void;
+}
+
+/**
+ * @internal
+ */
+export function addEventListener(
+  emitter: CommonEventEmitter,
+  eventName: string | symbol,
+  handler: (...args: any[]) => void
+): PuppeteerEventListener {
+  emitter.on(eventName, handler);
+  return {emitter, eventName, handler};
+}
+
+/**
+ * @internal
+ */
+export function removeEventListeners(
+  listeners: Array<{
+    emitter: CommonEventEmitter;
+    eventName: string | symbol;
+    handler: (...args: any[]) => void;
+  }>
+): void {
+  for (const listener of listeners) {
+    listener.emitter.removeListener(listener.eventName, listener.handler);
+  }
+  listeners.length = 0;
+}
+
+/**
+ * @internal
+ */
+export const isString = (obj: unknown): obj is string => {
+  return typeof obj === 'string' || obj instanceof String;
+};
+
+/**
+ * @internal
+ */
+export const isNumber = (obj: unknown): obj is number => {
+  return typeof obj === 'number' || obj instanceof Number;
+};
+
+/**
+ * @internal
+ */
+export async function waitForEvent<T>(
+  emitter: CommonEventEmitter,
+  eventName: string | symbol,
+  predicate: (event: T) => Promise<boolean> | boolean,
+  timeout: number,
+  abortPromise: Promise<Error>
+): Promise<T> {
+  let eventTimeout: NodeJS.Timeout;
+  let resolveCallback: (value: T | PromiseLike<T>) => void;
+  let rejectCallback: (value: Error) => void;
+  const promise = new Promise<T>((resolve, reject) => {
+    resolveCallback = resolve;
+    rejectCallback = reject;
+  });
+  const listener = addEventListener(emitter, eventName, async event => {
+    if (!(await predicate(event))) {
+      return;
+    }
+    resolveCallback(event);
+  });
+  if (timeout) {
+    eventTimeout = setTimeout(() => {
+      rejectCallback(
+        new TimeoutError('Timeout exceeded while waiting for event')
+      );
+    }, timeout);
+  }
+  function cleanup(): void {
+    removeEventListeners([listener]);
+    clearTimeout(eventTimeout);
+  }
+  const result = await Promise.race([promise, abortPromise]).then(
+    r => {
+      cleanup();
+      return r;
+    },
+    error => {
+      cleanup();
+      throw error;
+    }
+  );
+  if (isErrorLike(result)) {
+    throw result;
+  }
+
+  return result;
+}
+
+/**
+ * @internal
+ */
+export function createJSHandle(
+  context: ExecutionContext,
+  remoteObject: Protocol.Runtime.RemoteObject
+): JSHandle | ElementHandle<Node> {
+  if (remoteObject.subtype === 'node' && context._world) {
+    return new ElementHandle(context, remoteObject, context._world.frame());
+  }
+  return new JSHandle(context, remoteObject);
+}
+
+/**
+ * @internal
+ */
+export function evaluationString(
+  fun: Function | string,
+  ...args: unknown[]
+): string {
+  if (isString(fun)) {
+    assert(args.length === 0, 'Cannot evaluate a string with arguments');
+    return fun;
+  }
+
+  function serializeArgument(arg: unknown): string {
+    if (Object.is(arg, undefined)) {
+      return 'undefined';
+    }
+    return JSON.stringify(arg);
+  }
+
+  return `(${fun})(${args.map(serializeArgument).join(',')})`;
+}
+
+/**
+ * @internal
+ */
+export function pageBindingInitString(type: string, name: string): string {
+  function addPageBinding(type: string, bindingName: string): void {
+    /* Cast window to any here as we're about to add properties to it
+     * via win[bindingName] which TypeScript doesn't like.
+     */
+    const win = window as any;
+    const binding = win[bindingName];
+
+    win[bindingName] = (...args: unknown[]): Promise<unknown> => {
+      const me = (window as any)[bindingName];
+      let callbacks = me.callbacks;
+      if (!callbacks) {
+        callbacks = new Map();
+        me.callbacks = callbacks;
+      }
+      const seq = (me.lastSeq || 0) + 1;
+      me.lastSeq = seq;
+      const promise = new Promise((resolve, reject) => {
+        return callbacks.set(seq, {resolve, reject});
+      });
+      binding(JSON.stringify({type, name: bindingName, seq, args}));
+      return promise;
+    };
+  }
+  return evaluationString(addPageBinding, type, name);
+}
+
+/**
+ * @internal
+ */
+export function pageBindingDeliverResultString(
+  name: string,
+  seq: number,
+  result: unknown
+): string {
+  function deliverResult(name: string, seq: number, result: unknown): void {
+    (window as any)[name].callbacks.get(seq).resolve(result);
+    (window as any)[name].callbacks.delete(seq);
+  }
+  return evaluationString(deliverResult, name, seq, result);
+}
+
+/**
+ * @internal
+ */
+export function pageBindingDeliverErrorString(
+  name: string,
+  seq: number,
+  message: string,
+  stack?: string
+): string {
+  function deliverError(
+    name: string,
+    seq: number,
+    message: string,
+    stack?: string
+  ): void {
+    const error = new Error(message);
+    error.stack = stack;
+    (window as any)[name].callbacks.get(seq).reject(error);
+    (window as any)[name].callbacks.delete(seq);
+  }
+  return evaluationString(deliverError, name, seq, message, stack);
+}
+
+/**
+ * @internal
+ */
+export function pageBindingDeliverErrorValueString(
+  name: string,
+  seq: number,
+  value: unknown
+): string {
+  function deliverErrorValue(name: string, seq: number, value: unknown): void {
+    (window as any)[name].callbacks.get(seq).reject(value);
+    (window as any)[name].callbacks.delete(seq);
+  }
+  return evaluationString(deliverErrorValue, name, seq, value);
+}
+
+/**
+ * @internal
+ */
+export function makePredicateString(
+  predicate: Function,
+  predicateQueryHandler: Function
+): string {
+  function checkWaitForOptions(
+    node: Node | null,
+    waitForVisible: boolean,
+    waitForHidden: boolean
+  ): Node | null | boolean {
+    if (!node) {
+      return waitForHidden;
+    }
+    if (!waitForVisible && !waitForHidden) {
+      return node;
+    }
+    const element =
+      node.nodeType === Node.TEXT_NODE
+        ? (node.parentElement as Element)
+        : (node as Element);
+
+    const style = window.getComputedStyle(element);
+    const isVisible =
+      style && style.visibility !== 'hidden' && hasVisibleBoundingBox();
+    const success =
+      waitForVisible === isVisible || waitForHidden === !isVisible;
+    return success ? node : null;
+
+    function hasVisibleBoundingBox(): boolean {
+      const rect = element.getBoundingClientRect();
+      return !!(rect.top || rect.bottom || rect.width || rect.height);
+    }
+  }
+
+  return `
+    (() => {
+      const predicateQueryHandler = ${predicateQueryHandler};
+      const checkWaitForOptions = ${checkWaitForOptions};
+      return (${predicate})(...args)
+    })() `;
+}
+
+/**
+ * @internal
+ */
+export async function waitWithTimeout<T>(
+  promise: Promise<T>,
+  taskName: string,
+  timeout: number
+): Promise<T> {
+  let reject: (reason?: Error) => void;
+  const timeoutError = new TimeoutError(
+    `waiting for ${taskName} failed: timeout ${timeout}ms exceeded`
+  );
+  const timeoutPromise = new Promise<T>((_res, rej) => {
+    return (reject = rej);
+  });
+  let timeoutTimer = null;
+  if (timeout) {
+    timeoutTimer = setTimeout(() => {
+      return reject(timeoutError);
+    }, timeout);
+  }
+  try {
+    return await Promise.race([promise, timeoutPromise]);
+  } finally {
+    if (timeoutTimer) {
+      clearTimeout(timeoutTimer);
+    }
+  }
+}
+
+/**
+ * @internal
+ */
+let fs: typeof import('fs') | null = null;
+/**
+ * @internal
+ */
+export async function importFS(): Promise<typeof import('fs')> {
+  if (!fs) {
+    fs = await import('fs');
+  }
+  return fs;
+}
+
+/**
+ * @internal
+ */
+export async function getReadableAsBuffer(
+  readable: Readable,
+  path?: string
+): Promise<Buffer | null> {
+  const buffers = [];
+  if (path) {
+    let fs: typeof import('fs').promises;
+    try {
+      fs = (await importFS()).promises;
+    } catch (error) {
+      if (error instanceof TypeError) {
+        throw new Error(
+          'Cannot write to a path outside of a Node-like environment.'
+        );
+      }
+      throw error;
+    }
+    const fileHandle = await fs.open(path, 'w+');
+    for await (const chunk of readable) {
+      buffers.push(chunk);
+      await fileHandle.writeFile(chunk);
+    }
+    await fileHandle.close();
+  } else {
+    for await (const chunk of readable) {
+      buffers.push(chunk);
+    }
+  }
+  try {
+    return Buffer.concat(buffers);
+  } catch (error) {
+    return null;
+  }
+}
+
+/**
+ * @internal
+ */
+export async function getReadableFromProtocolStream(
+  client: CDPSession,
+  handle: string
+): Promise<Readable> {
+  // TODO: Once Node 18 becomes the lowest supported version, we can migrate to
+  // ReadableStream.
+  if (!isNode) {
+    throw new Error('Cannot create a stream outside of Node.js environment.');
+  }
+
+  const {Readable} = await import('stream');
+
+  let eof = false;
+  return new Readable({
+    async read(size: number) {
+      if (eof) {
+        return;
+      }
+
+      const response = await client.send('IO.read', {handle, size});
+      this.push(response.data, response.base64Encoded ? 'base64' : undefined);
+      if (response.eof) {
+        eof = true;
+        await client.send('IO.close', {handle});
+        this.push(null);
+      }
+    },
+  });
+}
diff --git a/remote/test/puppeteer/src/compat.d.ts b/remote/test/puppeteer/src/compat.d.ts
new file mode 100644
index 0000000000..6c330dc078
--- /dev/null
+++ b/remote/test/puppeteer/src/compat.d.ts
@@ -0,0 +1,3 @@
+declare const puppeteerDirname: string;
+
+export {puppeteerDirname};
diff --git a/remote/test/puppeteer/src/constants.ts b/remote/test/puppeteer/src/constants.ts
new file mode 100644
index 0000000000..d8e562ccec
--- /dev/null
+++ b/remote/test/puppeteer/src/constants.ts
@@ -0,0 +1,7 @@
+import {dirname} from 'path';
+import {puppeteerDirname} from './compat.js';
+
+/**
+ * @internal
+ */
+export const rootDirname = dirname(dirname(dirname(puppeteerDirname)));
diff --git a/remote/test/puppeteer/src/environment.ts b/remote/test/puppeteer/src/environment.ts
new file mode 100644
index 0000000000..80258c67fe
--- /dev/null
+++ b/remote/test/puppeteer/src/environment.ts
@@ -0,0 +1,29 @@
+/**
+ * Copyright 2020 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * @internal
+ */
+export const isNode = !!(typeof process !== 'undefined' && process.version);
+
+/**
+ * @internal
+ */
+export const DEFERRED_PROMISE_DEBUG_TIMEOUT =
+  typeof process !== 'undefined' &&
+  typeof process.env['PUPPETEER_DEFERRED_PROMISE_DEBUG_TIMEOUT'] !== 'undefined'
+    ? Number(process.env['PUPPETEER_DEFERRED_PROMISE_DEBUG_TIMEOUT'])
+    : -1;
diff --git a/remote/test/puppeteer/src/generated/version.ts b/remote/test/puppeteer/src/generated/version.ts
new file mode 100644
index 0000000000..6b5116dfd5
--- /dev/null
+++ b/remote/test/puppeteer/src/generated/version.ts
@@ -0,0 +1,4 @@
+/**
+ * @internal
+ */
+export const packageVersion = '17.1.2';
diff --git a/remote/test/puppeteer/src/initializePuppeteer.ts b/remote/test/puppeteer/src/initializePuppeteer.ts
new file mode 100644
index 0000000000..8d1e9a5157
--- /dev/null
+++ b/remote/test/puppeteer/src/initializePuppeteer.ts
@@ -0,0 +1,46 @@
+/**
+ * Copyright 2020 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import {Product} from './common/Product.js';
+import {rootDirname} from './constants.js';
+import {PuppeteerNode} from './node/Puppeteer.js';
+import {PUPPETEER_REVISIONS} from './revisions.js';
+import {getPackageDirectory} from './util/getPackageDirectory.js';
+
+/**
+ * @internal
+ */
+export const initializePuppeteer = (packageName: string): PuppeteerNode => {
+  const isPuppeteerCore = packageName === 'puppeteer-core';
+  let preferredRevision = PUPPETEER_REVISIONS.chromium;
+  // puppeteer-core ignores environment variables
+  const productName = !isPuppeteerCore
+    ? ((process.env['PUPPETEER_PRODUCT'] ||
+        process.env['npm_config_puppeteer_product'] ||
+        process.env['npm_package_config_puppeteer_product']) as Product)
+    : undefined;
+
+  if (!isPuppeteerCore && productName === 'firefox') {
+    preferredRevision = PUPPETEER_REVISIONS.firefox;
+  }
+
+  return new PuppeteerNode({
+    projectRoot: isPuppeteerCore ? undefined : getPackageDirectory(rootDirname),
+    preferredRevision,
+    isPuppeteerCore,
+    productName,
+  });
+};
diff --git a/remote/test/puppeteer/src/injected/Poller.ts b/remote/test/puppeteer/src/injected/Poller.ts
new file mode 100644
index 0000000000..c6748ebbc4
--- /dev/null
+++ b/remote/test/puppeteer/src/injected/Poller.ts
@@ -0,0 +1,156 @@
+import {
+  createDeferredPromise,
+  DeferredPromise,
+} from '../util/DeferredPromise.js';
+import {assert} from '../util/assert.js';
+
+interface Poller<T> {
+  start(): Promise<T>;
+  stop(): Promise<void>;
+  result(): Promise<T>;
+}
+
+export class MutationPoller<T> implements Poller<T> {
+  #fn: () => Promise<T>;
+
+  #root: Node;
+
+  #observer?: MutationObserver;
+  #promise?: DeferredPromise<T>;
+  constructor(fn: () => Promise<T>, root: Node) {
+    this.#fn = fn;
+    this.#root = root;
+  }
+
+  async start(): Promise<T> {
+    const promise = (this.#promise = createDeferredPromise<T>());
+    const result = await this.#fn();
+    if (result) {
+      promise.resolve(result);
+      return result;
+    }
+
+    this.#observer = new MutationObserver(async () => {
+      const result = await this.#fn();
+      if (!result) {
+        return;
+      }
+      promise.resolve(result);
+      await this.stop();
+    });
+    this.#observer.observe(this.#root, {
+      childList: true,
+      subtree: true,
+      attributes: true,
+    });
+
+    return this.#promise;
+  }
+
+  async stop(): Promise<void> {
+    assert(this.#promise, 'Polling never started.');
+    if (!this.#promise.finished()) {
+      this.#promise.reject(new Error('Polling stopped'));
+    }
+    if (this.#observer) {
+      this.#observer.disconnect();
+    }
+  }
+
+  result(): Promise<T> {
+    assert(this.#promise, 'Polling never started.');
+    return this.#promise;
+  }
+}
+
+export class RAFPoller<T> implements Poller<T> {
+  #fn: () => Promise<T>;
+  #promise?: DeferredPromise<T>;
+  constructor(fn: () => Promise<T>) {
+    this.#fn = fn;
+  }
+
+  async start(): Promise<T> {
+    const promise = (this.#promise = createDeferredPromise<T>());
+    const result = await this.#fn();
+    if (result) {
+      promise.resolve(result);
+      return result;
+    }
+
+    const poll = async () => {
+      if (promise.finished()) {
+        return;
+      }
+      const result = await this.#fn();
+      if (!result) {
+        window.requestAnimationFrame(poll);
+        return;
+      }
+      promise.resolve(result);
+      await this.stop();
+    };
+    window.requestAnimationFrame(poll);
+
+    return this.#promise;
+  }
+
+  async stop(): Promise<void> {
+    assert(this.#promise, 'Polling never started.');
+    if (!this.#promise.finished()) {
+      this.#promise.reject(new Error('Polling stopped'));
+    }
+  }
+
+  result(): Promise<T> {
+    assert(this.#promise, 'Polling never started.');
+    return this.#promise;
+  }
+}
+
+export class IntervalPoller<T> implements Poller<T> {
+  #fn: () => Promise<T>;
+  #ms: number;
+
+  #interval?: NodeJS.Timer;
+  #promise?: DeferredPromise<T>;
+  constructor(fn: () => Promise<T>, ms: number) {
+    this.#fn = fn;
+    this.#ms = ms;
+  }
+
+  async start(): Promise<T> {
+    const promise = (this.#promise = createDeferredPromise<T>());
+    const result = await this.#fn();
+    if (result) {
+      promise.resolve(result);
+      return result;
+    }
+
+    this.#interval = setInterval(async () => {
+      const result = await this.#fn();
+      if (!result) {
+        return;
+      }
+      promise.resolve(result);
+      await this.stop();
+    }, this.#ms);
+
+    return this.#promise;
+  }
+
+  async stop(): Promise<void> {
+    assert(this.#promise, 'Polling never started.');
+    if (!this.#promise.finished()) {
+      this.#promise.reject(new Error('Polling stopped'));
+    }
+    if (this.#interval) {
+      clearInterval(this.#interval);
+    }
+  }
+
+  result(): Promise<T> {
+    assert(this.#promise, 'Polling never started.');
+    return this.#promise;
+  }
+}
diff --git a/remote/test/puppeteer/src/injected/README.md b/remote/test/puppeteer/src/injected/README.md
new file mode 100644
index 0000000000..0a4af11cce
--- /dev/null
+++ b/remote/test/puppeteer/src/injected/README.md
@@ -0,0 +1,5 @@
+# Injected
+
+This folder contains code that is injected into every Puppeteer execution context. Each file is transpiled using esbuild into a script in `src/generated` which is then imported into server code.
+
+See `utils/generate_injected.ts` for more information.
diff --git a/remote/test/puppeteer/src/injected/injected.ts b/remote/test/puppeteer/src/injected/injected.ts
new file mode 100644
index 0000000000..7650a28fd5
--- /dev/null
+++ b/remote/test/puppeteer/src/injected/injected.ts
@@ -0,0 +1,14 @@
+import {createDeferredPromise} from '../util/DeferredPromise.js';
+import * as Poller from './Poller.js';
+import * as util from './util.js';
+
+Object.assign(
+  self,
+  Object.freeze({
+    InjectedUtil: {
+      ...Poller,
+      ...util,
+      createDeferredPromise,
+    },
+  })
+);
diff --git a/remote/test/puppeteer/src/injected/util.ts b/remote/test/puppeteer/src/injected/util.ts
new file mode 100644
index 0000000000..79e68e5e0f
--- /dev/null
+++ b/remote/test/puppeteer/src/injected/util.ts
@@ -0,0 +1,18 @@
+const createdFunctions = new Map<string, (...args: unknown[]) => unknown>();
+
+/**
+ * Creates a function from a string.
+ */
+export const createFunction = (
+  functionValue: string
+): ((...args: unknown[]) => unknown) => {
+  let fn = createdFunctions.get(functionValue);
+  if (fn) {
+    return fn;
+  }
+  fn = new Function(`return ${functionValue}`)() as (
+    ...args: unknown[]
+  ) => unknown;
+  createdFunctions.set(functionValue, fn);
+  return fn;
+};
diff --git a/remote/test/puppeteer/src/node/BrowserFetcher.ts b/remote/test/puppeteer/src/node/BrowserFetcher.ts
new file mode 100644
index 0000000000..7c425c2dbb
--- /dev/null
+++ b/remote/test/puppeteer/src/node/BrowserFetcher.ts
@@ -0,0 +1,701 @@
+/**
+ * Copyright 2017 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import * as os from 'os';
+import * as fs from 'fs';
+import * as path from 'path';
+import * as util from 'util';
+import * as childProcess from 'child_process';
+import * as https from 'https';
+import * as http from 'http';
+
+import {Product} from '../common/Product.js';
+import extractZip from 'extract-zip';
+import {debug} from '../common/Debug.js';
+import {promisify} from 'util';
+import removeRecursive from 'rimraf';
+import * as URL from 'url';
+import createHttpsProxyAgent, {
+  HttpsProxyAgent,
+  HttpsProxyAgentOptions,
+} from 'https-proxy-agent';
+import {getProxyForUrl} from 'proxy-from-env';
+import {assert} from '../util/assert.js';
+
+import tar from 'tar-fs';
+import bzip from 'unbzip2-stream';
+
+const {PUPPETEER_EXPERIMENTAL_CHROMIUM_MAC_ARM} = process.env;
+
+const debugFetcher = debug('puppeteer:fetcher');
+
+const downloadURLs: Record<Product, Partial<Record<Platform, string>>> = {
+  chrome: {
+    linux: '%s/chromium-browser-snapshots/Linux_x64/%d/%s.zip',
+    mac: '%s/chromium-browser-snapshots/Mac/%d/%s.zip',
+    mac_arm: '%s/chromium-browser-snapshots/Mac_Arm/%d/%s.zip',
+    win32: '%s/chromium-browser-snapshots/Win/%d/%s.zip',
+    win64: '%s/chromium-browser-snapshots/Win_x64/%d/%s.zip',
+  },
+  firefox: {
+    linux: '%s/firefox-%s.en-US.%s-x86_64.tar.bz2',
+    mac: '%s/firefox-%s.en-US.%s.dmg',
+    win32: '%s/firefox-%s.en-US.%s.zip',
+    win64: '%s/firefox-%s.en-US.%s.zip',
+  },
+};
+
+const browserConfig = {
+  chrome: {
+    host: 'https://storage.googleapis.com',
+    destination: '.local-chromium',
+  },
+  firefox: {
+    host: 'https://archive.mozilla.org/pub/firefox/nightly/latest-mozilla-central',
+    destination: '.local-firefox',
+  },
+} as const;
+
+/**
+ * Supported platforms.
+ *
+ * @public
+ */
+export type Platform = 'linux' | 'mac' | 'mac_arm' | 'win32' | 'win64';
+
+function archiveName(
+  product: Product,
+  platform: Platform,
+  revision: string
+): string {
+  switch (product) {
+    case 'chrome':
+      switch (platform) {
+        case 'linux':
+          return 'chrome-linux';
+        case 'mac_arm':
+        case 'mac':
+          return 'chrome-mac';
+        case 'win32':
+        case 'win64':
+          // Windows archive name changed at r591479.
+          return parseInt(revision, 10) > 591479
+            ? 'chrome-win'
+            : 'chrome-win32';
+      }
+    case 'firefox':
+      return platform;
+  }
+}
+
+function downloadURL(
+  product: Product,
+  platform: Platform,
+  host: string,
+  revision: string
+): string {
+  const url = util.format(
+    downloadURLs[product][platform],
+    host,
+    revision,
+    archiveName(product, platform, revision)
+  );
+  return url;
+}
+
+function handleArm64(): void {
+  let exists = fs.existsSync('/usr/bin/chromium-browser');
+  if (exists) {
+    return;
+  }
+  exists = fs.existsSync('/usr/bin/chromium');
+  if (exists) {
+    return;
+  }
+  console.error(
+    'The chromium binary is not available for arm64.' +
+      '\nIf you are on Ubuntu, you can install with: ' +
+      '\n\n sudo apt install chromium\n' +
+      '\n\n sudo apt install chromium-browser\n'
+  );
+  throw new Error();
+}
+
+const readdirAsync = promisify(fs.readdir.bind(fs));
+const mkdirAsync = promisify(fs.mkdir.bind(fs));
+const unlinkAsync = promisify(fs.unlink.bind(fs));
+const chmodAsync = promisify(fs.chmod.bind(fs));
+
+function existsAsync(filePath: string): Promise<boolean> {
+  return new Promise(resolve => {
+    fs.access(filePath, err => {
+      return resolve(!err);
+    });
+  });
+}
+
+/**
+ * @public
+ */
+export interface BrowserFetcherOptions {
+  platform?: Platform;
+  product?: string;
+  path?: string;
+  host?: string;
+}
+
+/**
+ * @public
+ */
+export interface BrowserFetcherRevisionInfo {
+  folderPath: string;
+  executablePath: string;
+  url: string;
+  local: boolean;
+  revision: string;
+  product: string;
+}
+/**
+ * BrowserFetcher can download and manage different versions of Chromium and Firefox.
+ *
+ * @remarks
+ * BrowserFetcher operates on revision strings that specify a precise version of Chromium, e.g. `"533271"`. Revision strings can be obtained from {@link http://omahaproxy.appspot.com/ | omahaproxy.appspot.com}.
+ * In the Firefox case, BrowserFetcher downloads Firefox Nightly and
+ * operates on version numbers such as `"75"`.
+ *
+ * @example
+ * An example of using BrowserFetcher to download a specific version of Chromium
+ * and running Puppeteer against it:
+ *
+ * ```ts
+ * const browserFetcher = puppeteer.createBrowserFetcher();
+ * const revisionInfo = await browserFetcher.download('533271');
+ * const browser = await puppeteer.launch({
+ *   executablePath: revisionInfo.executablePath,
+ * });
+ * ```
+ *
+ * **NOTE** BrowserFetcher is not designed to work concurrently with other
+ * instances of BrowserFetcher that share the same downloads directory.
+ *
+ * @public
+ */
+
+export class BrowserFetcher {
+  #product: Product;
+  #downloadsFolder: string;
+  #downloadHost: string;
+  #platform: Platform;
+
+  /**
+   * @internal
+   */
+  constructor(projectRoot: string, options: BrowserFetcherOptions = {}) {
+    this.#product = (options.product || 'chrome').toLowerCase() as Product;
+    assert(
+      this.#product === 'chrome' || this.#product === 'firefox',
+      `Unknown product: "${options.product}"`
+    );
+
+    this.#downloadsFolder =
+      options.path ||
+      path.join(projectRoot, browserConfig[this.#product].destination);
+    this.#downloadHost = options.host || browserConfig[this.#product].host;
+
+    if (options.platform) {
+      this.#platform = options.platform;
+    } else {
+      const platform = os.platform();
+      switch (platform) {
+        case 'darwin':
+          switch (this.#product) {
+            case 'chrome':
+              this.#platform =
+                os.arch() === 'arm64' && PUPPETEER_EXPERIMENTAL_CHROMIUM_MAC_ARM
+                  ? 'mac_arm'
+                  : 'mac';
+              break;
+            case 'firefox':
+              this.#platform = 'mac';
+              break;
+          }
+          break;
+        case 'linux':
+          this.#platform = 'linux';
+          break;
+        case 'win32':
+          this.#platform = os.arch() === 'x64' ? 'win64' : 'win32';
+          return;
+        default:
+          assert(false, 'Unsupported platform: ' + platform);
+      }
+    }
+
+    assert(
+      downloadURLs[this.#product][this.#platform],
+      'Unsupported platform: ' + this.#platform
+    );
+  }
+
+  /**
+   * @returns Returns the current `Platform`, which is one of `mac`, `linux`,
+   * `win32` or `win64`.
+   */
+  platform(): Platform {
+    return this.#platform;
+  }
+
+  /**
+   * @returns Returns the current `Product`, which is one of `chrome` or
+   * `firefox`.
+   */
+  product(): Product {
+    return this.#product;
+  }
+
+  /**
+   * @returns The download host being used.
+   */
+  host(): string {
+    return this.#downloadHost;
+  }
+
+  /**
+   * Initiates a HEAD request to check if the revision is available.
+   * @remarks
+   * This method is affected by the current `product`.
+   * @param revision - The revision to check availability for.
+   * @returns A promise that resolves to `true` if the revision could be downloaded
+   * from the host.
+   */
+  canDownload(revision: string): Promise<boolean> {
+    const url = downloadURL(
+      this.#product,
+      this.#platform,
+      this.#downloadHost,
+      revision
+    );
+    return new Promise(resolve => {
+      const request = httpRequest(
+        url,
+        'HEAD',
+        response => {
+          resolve(response.statusCode === 200);
+        },
+        false
+      );
+      request.on('error', error => {
+        console.error(error);
+        resolve(false);
+      });
+    });
+  }
+
+  /**
+   * Initiates a GET request to download the revision from the host.
+   * @remarks
+   * This method is affected by the current `product`.
+   * @param revision - The revision to download.
+   * @param progressCallback - A function that will be called with two arguments:
+   * How many bytes have been downloaded and the total number of bytes of the download.
+   * @returns A promise with revision information when the revision is downloaded
+   * and extracted.
+   */
+  async download(
+    revision: string,
+    progressCallback: (x: number, y: number) => void = (): void => {}
+  ): Promise<BrowserFetcherRevisionInfo | undefined> {
+    const url = downloadURL(
+      this.#product,
+      this.#platform,
+      this.#downloadHost,
+      revision
+    );
+    const fileName = url.split('/').pop();
+    assert(fileName, `A malformed download URL was found: ${url}.`);
+    const archivePath = path.join(this.#downloadsFolder, fileName);
+    const outputPath = this.#getFolderPath(revision);
+    if (await existsAsync(outputPath)) {
+      return this.revisionInfo(revision);
+    }
+    if (!(await existsAsync(this.#downloadsFolder))) {
+      await mkdirAsync(this.#downloadsFolder);
+    }
+
+    // Use system Chromium builds on Linux ARM devices
+    if (os.platform() !== 'darwin' && os.arch() === 'arm64') {
+      handleArm64();
+      return;
+    }
+    try {
+      await _downloadFile(url, archivePath, progressCallback);
+      await install(archivePath, outputPath);
+    } finally {
+      if (await existsAsync(archivePath)) {
+        await unlinkAsync(archivePath);
+      }
+    }
+    const revisionInfo = this.revisionInfo(revision);
+    if (revisionInfo) {
+      await chmodAsync(revisionInfo.executablePath, 0o755);
+    }
+    return revisionInfo;
+  }
+
+  /**
+   * @remarks
+   * This method is affected by the current `product`.
+   * @returns A promise with a list of all revision strings (for the current `product`)
+   * available locally on disk.
+   */
+  async localRevisions(): Promise<string[]> {
+    if (!(await existsAsync(this.#downloadsFolder))) {
+      return [];
+    }
+    const fileNames = await readdirAsync(this.#downloadsFolder);
+    return fileNames
+      .map(fileName => {
+        return parseFolderPath(this.#product, fileName);
+      })
+      .filter(
+        (
+          entry
+        ): entry is {product: string; platform: string; revision: string} => {
+          return (entry && entry.platform === this.#platform) ?? false;
+        }
+      )
+      .map(entry => {
+        return entry.revision;
+      });
+  }
+
+  /**
+   * @remarks
+   * This method is affected by the current `product`.
+   * @param revision - A revision to remove for the current `product`.
+   * @returns A promise that resolves when the revision has been removes or
+   * throws if the revision has not been downloaded.
+   */
+  async remove(revision: string): Promise<void> {
+    const folderPath = this.#getFolderPath(revision);
+    assert(
+      await existsAsync(folderPath),
+      `Failed to remove: revision ${revision} is not downloaded`
+    );
+    await new Promise(fulfill => {
+      return removeRecursive(folderPath, fulfill);
+    });
+  }
+
+  /**
+   * @param revision - The revision to get info for.
+   * @returns The revision info for the given revision.
+   */
+  revisionInfo(revision: string): BrowserFetcherRevisionInfo {
+    const folderPath = this.#getFolderPath(revision);
+    let executablePath = '';
+    if (this.#product === 'chrome') {
+      if (this.#platform === 'mac' || this.#platform === 'mac_arm') {
+        executablePath = path.join(
+          folderPath,
+          archiveName(this.#product, this.#platform, revision),
+          'Chromium.app',
+          'Contents',
+          'MacOS',
+          'Chromium'
+        );
+      } else if (this.#platform === 'linux') {
+        executablePath = path.join(
+          folderPath,
+          archiveName(this.#product, this.#platform, revision),
+          'chrome'
+        );
+      } else if (this.#platform === 'win32' || this.#platform === 'win64') {
+        executablePath = path.join(
+          folderPath,
+          archiveName(this.#product, this.#platform, revision),
+          'chrome.exe'
+        );
+      } else {
+        throw new Error('Unsupported platform: ' + this.#platform);
+      }
+    } else if (this.#product === 'firefox') {
+      if (this.#platform === 'mac' || this.#platform === 'mac_arm') {
+        executablePath = path.join(
+          folderPath,
+          'Firefox Nightly.app',
+          'Contents',
+          'MacOS',
+          'firefox'
+        );
+      } else if (this.#platform === 'linux') {
+        executablePath = path.join(folderPath, 'firefox', 'firefox');
+      } else if (this.#platform === 'win32' || this.#platform === 'win64') {
+        executablePath = path.join(folderPath, 'firefox', 'firefox.exe');
+      } else {
+        throw new Error('Unsupported platform: ' + this.#platform);
+      }
+    } else {
+      throw new Error('Unsupported product: ' + this.#product);
+    }
+    const url = downloadURL(
+      this.#product,
+      this.#platform,
+      this.#downloadHost,
+      revision
+    );
+    const local = fs.existsSync(folderPath);
+    debugFetcher({
+      revision,
+      executablePath,
+      folderPath,
+      local,
+      url,
+      product: this.#product,
+    });
+    return {
+      revision,
+      executablePath,
+      folderPath,
+      local,
+      url,
+      product: this.#product,
+    };
+  }
+
+  #getFolderPath(revision: string): string {
+    return path.resolve(this.#downloadsFolder, `${this.#platform}-${revision}`);
+  }
+}
+
+function parseFolderPath(
+  product: Product,
+  folderPath: string
+): {product: string; platform: string; revision: string} | undefined {
+  const name = path.basename(folderPath);
+  const splits = name.split('-');
+  if (splits.length !== 2) {
+    return;
+  }
+  const [platform, revision] = splits;
+  if (!revision || !platform || !(platform in downloadURLs[product])) {
+    return;
+  }
+  return {product, platform, revision};
+}
+
+/**
+ * @internal
+ */
+function _downloadFile(
+  url: string,
+  destinationPath: string,
+  progressCallback?: (x: number, y: number) => void
+): Promise<void> {
+  debugFetcher(`Downloading binary from ${url}`);
+  let fulfill: (value: void | PromiseLike<void>) => void;
+  let reject: (err: Error) => void;
+  const promise = new Promise<void>((x, y) => {
+    fulfill = x;
+    reject = y;
+  });
+
+  let downloadedBytes = 0;
+  let totalBytes = 0;
+
+  const request = httpRequest(url, 'GET', response => {
+    if (response.statusCode !== 200) {
+      const error = new Error(
+        `Download failed: server returned code ${response.statusCode}. URL: ${url}`
+      );
+      // consume response data to free up memory
+      response.resume();
+      reject(error);
+      return;
+    }
+    const file = fs.createWriteStream(destinationPath);
+    file.on('finish', () => {
+      return fulfill();
+    });
+    file.on('error', error => {
+      return reject(error);
+    });
+    response.pipe(file);
+    totalBytes = parseInt(response.headers['content-length']!, 10);
+    if (progressCallback) {
+      response.on('data', onData);
+    }
+  });
+  request.on('error', error => {
+    return reject(error);
+  });
+  return promise;
+
+  function onData(chunk: string): void {
+    downloadedBytes += chunk.length;
+    progressCallback!(downloadedBytes, totalBytes);
+  }
+}
+
+function install(archivePath: string, folderPath: string): Promise<unknown> {
+  debugFetcher(`Installing ${archivePath} to ${folderPath}`);
+  if (archivePath.endsWith('.zip')) {
+    return extractZip(archivePath, {dir: folderPath});
+  } else if (archivePath.endsWith('.tar.bz2')) {
+    return _extractTar(archivePath, folderPath);
+  } else if (archivePath.endsWith('.dmg')) {
+    return mkdirAsync(folderPath).then(() => {
+      return _installDMG(archivePath, folderPath);
+    });
+  } else {
+    throw new Error(`Unsupported archive format: ${archivePath}`);
+  }
+}
+
+/**
+ * @internal
+ */
+function _extractTar(tarPath: string, folderPath: string): Promise<unknown> {
+  return new Promise((fulfill, reject) => {
+    const tarStream = tar.extract(folderPath);
+    tarStream.on('error', reject);
+    tarStream.on('finish', fulfill);
+    const readStream = fs.createReadStream(tarPath);
+    readStream.pipe(bzip()).pipe(tarStream);
+  });
+}
+
+/**
+ * @internal
+ */
+function _installDMG(dmgPath: string, folderPath: string): Promise<void> {
+  let mountPath: string | undefined;
+
+  return new Promise<void>((fulfill, reject): void => {
+    const mountCommand = `hdiutil attach -nobrowse -noautoopen "${dmgPath}"`;
+    childProcess.exec(mountCommand, (err, stdout) => {
+      if (err) {
+        return reject(err);
+      }
+      const volumes = stdout.match(/\/Volumes\/(.*)/m);
+      if (!volumes) {
+        return reject(new Error(`Could not find volume path in ${stdout}`));
+      }
+      mountPath = volumes[0]!;
+      readdirAsync(mountPath)
+        .then(fileNames => {
+          const appName = fileNames.find(item => {
+            return typeof item === 'string' && item.endsWith('.app');
+          });
+          if (!appName) {
+            return reject(new Error(`Cannot find app in ${mountPath}`));
+          }
+          const copyPath = path.join(mountPath!, appName);
+          debugFetcher(`Copying ${copyPath} to ${folderPath}`);
+          childProcess.exec(`cp -R "${copyPath}" "${folderPath}"`, err => {
+            if (err) {
+              reject(err);
+            } else {
+              fulfill();
+            }
+          });
+        })
+        .catch(reject);
+    });
+  })
+    .catch(error => {
+      console.error(error);
+    })
+    .finally((): void => {
+      if (!mountPath) {
+        return;
+      }
+      const unmountCommand = `hdiutil detach "${mountPath}" -quiet`;
+      debugFetcher(`Unmounting ${mountPath}`);
+      childProcess.exec(unmountCommand, err => {
+        if (err) {
+          console.error(`Error unmounting dmg: ${err}`);
+        }
+      });
+    });
+}
+
+function httpRequest(
+  url: string,
+  method: string,
+  response: (x: http.IncomingMessage) => void,
+  keepAlive = true
+): http.ClientRequest {
+  const urlParsed = URL.parse(url);
+
+  type Options = Partial<URL.UrlWithStringQuery> & {
+    method?: string;
+    agent?: HttpsProxyAgent;
+    rejectUnauthorized?: boolean;
+    headers?: http.OutgoingHttpHeaders | undefined;
+  };
+
+  let options: Options = {
+    ...urlParsed,
+    method,
+    headers: keepAlive
+      ? {
+          Connection: 'keep-alive',
+        }
+      : undefined,
+  };
+
+  const proxyURL = getProxyForUrl(url);
+  if (proxyURL) {
+    if (url.startsWith('http:')) {
+      const proxy = URL.parse(proxyURL);
+      options = {
+        path: options.href,
+        host: proxy.hostname,
+        port: proxy.port,
+      };
+    } else {
+      const parsedProxyURL = URL.parse(proxyURL);
+
+      const proxyOptions = {
+        ...parsedProxyURL,
+        secureProxy: parsedProxyURL.protocol === 'https:',
+      } as HttpsProxyAgentOptions;
+
+      options.agent = createHttpsProxyAgent(proxyOptions);
+      options.rejectUnauthorized = false;
+    }
+  }
+
+  const requestCallback = (res: http.IncomingMessage): void => {
+    if (
+      res.statusCode &&
+      res.statusCode >= 300 &&
+      res.statusCode < 400 &&
+      res.headers.location
+    ) {
+      httpRequest(res.headers.location, method, response);
+    } else {
+      response(res);
+    }
+  };
+  const request =
+    options.protocol === 'https:'
+      ? https.request(options, requestCallback)
+      : http.request(options, requestCallback);
+  request.end();
+  return request;
+}
diff --git a/remote/test/puppeteer/src/node/BrowserRunner.ts b/remote/test/puppeteer/src/node/BrowserRunner.ts
new file mode 100644
index 0000000000..c18350a6da
--- /dev/null
+++ b/remote/test/puppeteer/src/node/BrowserRunner.ts
@@ -0,0 +1,359 @@
+/**
+ * Copyright 2020 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import * as childProcess from 'child_process';
+import * as fs from 'fs';
+import * as path from 'path';
+import * as readline from 'readline';
+import removeFolder from 'rimraf';
+import {promisify} from 'util';
+import {assert} from '../util/assert.js';
+import {Connection} from '../common/Connection.js';
+import {debug} from '../common/Debug.js';
+import {TimeoutError} from '../common/Errors.js';
+import {
+  debugError,
+  addEventListener,
+  PuppeteerEventListener,
+  removeEventListeners,
+} from '../common/util.js';
+import {isErrnoException, isErrorLike} from '../util/ErrorLike.js';
+import {Product} from '../common/Product.js';
+import {NodeWebSocketTransport as WebSocketTransport} from '../node/NodeWebSocketTransport.js';
+import {LaunchOptions} from './LaunchOptions.js';
+import {PipeTransport} from './PipeTransport.js';
+
+const removeFolderAsync = promisify(removeFolder);
+const renameAsync = promisify(fs.rename);
+const unlinkAsync = promisify(fs.unlink);
+
+const debugLauncher = debug('puppeteer:launcher');
+
+const PROCESS_ERROR_EXPLANATION = `Puppeteer was unable to kill the process which ran the browser binary.
+This means that, on future Puppeteer launches, Puppeteer might not be able to launch the browser.
+Please check your open processes and ensure that the browser processes that Puppeteer launched have been killed.
+If you think this is a bug, please report it on the Puppeteer issue tracker.`;
+
+/**
+ * @internal
+ */
+export class BrowserRunner {
+  #product: Product;
+  #executablePath: string;
+  #processArguments: string[];
+  #userDataDir: string;
+  #isTempUserDataDir?: boolean;
+  #closed = true;
+  #listeners: PuppeteerEventListener[] = [];
+  #processClosing!: Promise<void>;
+
+  proc?: childProcess.ChildProcess;
+  connection?: Connection;
+
+  constructor(
+    product: Product,
+    executablePath: string,
+    processArguments: string[],
+    userDataDir: string,
+    isTempUserDataDir?: boolean
+  ) {
+    this.#product = product;
+    this.#executablePath = executablePath;
+    this.#processArguments = processArguments;
+    this.#userDataDir = userDataDir;
+    this.#isTempUserDataDir = isTempUserDataDir;
+  }
+
+  start(options: LaunchOptions): void {
+    const {handleSIGINT, handleSIGTERM, handleSIGHUP, dumpio, env, pipe} =
+      options;
+    let stdio: Array<'ignore' | 'pipe'>;
+    if (pipe) {
+      if (dumpio) {
+        stdio = ['ignore', 'pipe', 'pipe', 'pipe', 'pipe'];
+      } else {
+        stdio = ['ignore', 'ignore', 'ignore', 'pipe', 'pipe'];
+      }
+    } else {
+      if (dumpio) {
+        stdio = ['pipe', 'pipe', 'pipe'];
+      } else {
+        stdio = ['pipe', 'ignore', 'pipe'];
+      }
+    }
+    assert(!this.proc, 'This process has previously been started.');
+    debugLauncher(
+      `Calling ${this.#executablePath} ${this.#processArguments.join(' ')}`
+    );
+    this.proc = childProcess.spawn(
+      this.#executablePath,
+      this.#processArguments,
+      {
+        // On non-windows platforms, `detached: true` makes child process a
+        // leader of a new process group, making it possible to kill child
+        // process tree with `.kill(-pid)` command. @see
+        // https://nodejs.org/api/child_process.html#child_process_options_detached
+        detached: process.platform !== 'win32',
+        env,
+        stdio,
+      }
+    );
+    if (dumpio) {
+      this.proc.stderr?.pipe(process.stderr);
+      this.proc.stdout?.pipe(process.stdout);
+    }
+    this.#closed = false;
+    this.#processClosing = new Promise((fulfill, reject) => {
+      this.proc!.once('exit', async () => {
+        this.#closed = true;
+        // Cleanup as processes exit.
+        if (this.#isTempUserDataDir) {
+          try {
+            await removeFolderAsync(this.#userDataDir);
+            fulfill();
+          } catch (error) {
+            debugError(error);
+            reject(error);
+          }
+        } else {
+          if (this.#product === 'firefox') {
+            try {
+              // When an existing user profile has been used remove the user
+              // preferences file and restore possibly backuped preferences.
+              await unlinkAsync(path.join(this.#userDataDir, 'user.js'));
+
+              const prefsBackupPath = path.join(
+                this.#userDataDir,
+                'prefs.js.puppeteer'
+              );
+              if (fs.existsSync(prefsBackupPath)) {
+                const prefsPath = path.join(this.#userDataDir, 'prefs.js');
+                await unlinkAsync(prefsPath);
+                await renameAsync(prefsBackupPath, prefsPath);
+              }
+            } catch (error) {
+              debugError(error);
+              reject(error);
+            }
+          }
+
+          fulfill();
+        }
+      });
+    });
+    this.#listeners = [addEventListener(process, 'exit', this.kill.bind(this))];
+    if (handleSIGINT) {
+      this.#listeners.push(
+        addEventListener(process, 'SIGINT', () => {
+          this.kill();
+          process.exit(130);
+        })
+      );
+    }
+    if (handleSIGTERM) {
+      this.#listeners.push(
+        addEventListener(process, 'SIGTERM', this.close.bind(this))
+      );
+    }
+    if (handleSIGHUP) {
+      this.#listeners.push(
+        addEventListener(process, 'SIGHUP', this.close.bind(this))
+      );
+    }
+  }
+
+  close(): Promise<void> {
+    if (this.#closed) {
+      return Promise.resolve();
+    }
+    if (this.#isTempUserDataDir) {
+      this.kill();
+    } else if (this.connection) {
+      // Attempt to close the browser gracefully
+      this.connection.send('Browser.close').catch(error => {
+        debugError(error);
+        this.kill();
+      });
+    }
+    // Cleanup this listener last, as that makes sure the full callback runs. If we
+    // perform this earlier, then the previous function calls would not happen.
+    removeEventListeners(this.#listeners);
+    return this.#processClosing;
+  }
+
+  kill(): void {
+    // If the process failed to launch (for example if the browser executable path
+    // is invalid), then the process does not get a pid assigned. A call to
+    // `proc.kill` would error, as the `pid` to-be-killed can not be found.
+    if (this.proc && this.proc.pid && pidExists(this.proc.pid)) {
+      const proc = this.proc;
+      try {
+        if (process.platform === 'win32') {
+          childProcess.exec(`taskkill /pid ${this.proc.pid} /T /F`, error => {
+            if (error) {
+              // taskkill can fail to kill the process e.g. due to missing permissions.
+              // Let's kill the process via Node API. This delays killing of all child
+              // processes of `this.proc` until the main Node.js process dies.
+              proc.kill();
+            }
+          });
+        } else {
+          // on linux the process group can be killed with the group id prefixed with
+          // a minus sign. The process group id is the group leader's pid.
+          const processGroupId = -this.proc.pid;
+
+          try {
+            process.kill(processGroupId, 'SIGKILL');
+          } catch (error) {
+            // Killing the process group can fail due e.g. to missing permissions.
+            // Let's kill the process via Node API. This delays killing of all child
+            // processes of `this.proc` until the main Node.js process dies.
+            proc.kill('SIGKILL');
+          }
+        }
+      } catch (error) {
+        throw new Error(
+          `${PROCESS_ERROR_EXPLANATION}\nError cause: ${
+            isErrorLike(error) ? error.stack : error
+          }`
+        );
+      }
+    }
+
+    // Attempt to remove temporary profile directory to avoid littering.
+    try {
+      if (this.#isTempUserDataDir) {
+        removeFolder.sync(this.#userDataDir);
+      }
+    } catch (error) {}
+
+    // Cleanup this listener last, as that makes sure the full callback runs. If we
+    // perform this earlier, then the previous function calls would not happen.
+    removeEventListeners(this.#listeners);
+  }
+
+  async setupConnection(options: {
+    usePipe?: boolean;
+    timeout: number;
+    slowMo: number;
+    preferredRevision: string;
+  }): Promise<Connection> {
+    assert(this.proc, 'BrowserRunner not started.');
+
+    const {usePipe, timeout, slowMo, preferredRevision} = options;
+    if (!usePipe) {
+      const browserWSEndpoint = await waitForWSEndpoint(
+        this.proc,
+        timeout,
+        preferredRevision
+      );
+      const transport = await WebSocketTransport.create(browserWSEndpoint);
+      this.connection = new Connection(browserWSEndpoint, transport, slowMo);
+    } else {
+      // stdio was assigned during start(), and the 'pipe' option there adds the
+      // 4th and 5th items to stdio array
+      const {3: pipeWrite, 4: pipeRead} = this.proc.stdio;
+      const transport = new PipeTransport(
+        pipeWrite as NodeJS.WritableStream,
+        pipeRead as NodeJS.ReadableStream
+      );
+      this.connection = new Connection('', transport, slowMo);
+    }
+    return this.connection;
+  }
+}
+
+function waitForWSEndpoint(
+  browserProcess: childProcess.ChildProcess,
+  timeout: number,
+  preferredRevision: string
+): Promise<string> {
+  assert(browserProcess.stderr, '`browserProcess` does not have stderr.');
+  const rl = readline.createInterface(browserProcess.stderr);
+  let stderr = '';
+
+  return new Promise((resolve, reject) => {
+    const listeners = [
+      addEventListener(rl, 'line', onLine),
+      addEventListener(rl, 'close', () => {
+        return onClose();
+      }),
+      addEventListener(browserProcess, 'exit', () => {
+        return onClose();
+      }),
+      addEventListener(browserProcess, 'error', error => {
+        return onClose(error);
+      }),
+    ];
+    const timeoutId = timeout ? setTimeout(onTimeout, timeout) : 0;
+
+    function onClose(error?: Error): void {
+      cleanup();
+      reject(
+        new Error(
+          [
+            'Failed to launch the browser process!' +
+              (error ? ' ' + error.message : ''),
+            stderr,
+            '',
+            'TROUBLESHOOTING: https://github.com/puppeteer/puppeteer/blob/main/docs/troubleshooting.md',
+            '',
+          ].join('\n')
+        )
+      );
+    }
+
+    function onTimeout(): void {
+      cleanup();
+      reject(
+        new TimeoutError(
+          `Timed out after ${timeout} ms while trying to connect to the browser! Only Chrome at revision r${preferredRevision} is guaranteed to work.`
+        )
+      );
+    }
+
+    function onLine(line: string): void {
+      stderr += line + '\n';
+      const match = line.match(/^DevTools listening on (ws:\/\/.*)$/);
+      if (!match) {
+        return;
+      }
+      cleanup();
+      // The RegExp matches, so this will obviously exist.
+      resolve(match[1]!);
+    }
+
+    function cleanup(): void {
+      if (timeoutId) {
+        clearTimeout(timeoutId);
+      }
+      removeEventListeners(listeners);
+    }
+  });
+}
+
+function pidExists(pid: number): boolean {
+  try {
+    return process.kill(pid, 0);
+  } catch (error) {
+    if (isErrnoException(error)) {
+      if (error.code && error.code === 'ESRCH') {
+        return false;
+      }
+    }
+    throw error;
+  }
+}
diff --git a/remote/test/puppeteer/src/node/ChromeLauncher.ts b/remote/test/puppeteer/src/node/ChromeLauncher.ts
new file mode 100644
index 0000000000..ab07b56f6e
--- /dev/null
+++ b/remote/test/puppeteer/src/node/ChromeLauncher.ts
@@ -0,0 +1,265 @@
+import fs from 'fs';
+import path from 'path';
+import {assert} from '../util/assert.js';
+import {Browser} from '../common/Browser.js';
+import {Product} from '../common/Product.js';
+import {BrowserRunner} from './BrowserRunner.js';
+import {
+  BrowserLaunchArgumentOptions,
+  ChromeReleaseChannel,
+  PuppeteerNodeLaunchOptions,
+} from './LaunchOptions.js';
+import {
+  executablePathForChannel,
+  ProductLauncher,
+  resolveExecutablePath,
+} from './ProductLauncher.js';
+import {tmpdir} from './util.js';
+
+/**
+ * @internal
+ */
+export class ChromeLauncher implements ProductLauncher {
+  /**
+   * @internal
+   */
+  _projectRoot: string | undefined;
+  /**
+   * @internal
+   */
+  _preferredRevision: string;
+  /**
+   * @internal
+   */
+  _isPuppeteerCore: boolean;
+
+  constructor(
+    projectRoot: string | undefined,
+    preferredRevision: string,
+    isPuppeteerCore: boolean
+  ) {
+    this._projectRoot = projectRoot;
+    this._preferredRevision = preferredRevision;
+    this._isPuppeteerCore = isPuppeteerCore;
+  }
+
+  async launch(options: PuppeteerNodeLaunchOptions = {}): Promise<Browser> {
+    const {
+      ignoreDefaultArgs = false,
+      args = [],
+      dumpio = false,
+      channel,
+      executablePath,
+      pipe = false,
+      env = process.env,
+      handleSIGINT = true,
+      handleSIGTERM = true,
+      handleSIGHUP = true,
+      ignoreHTTPSErrors = false,
+      defaultViewport = {width: 800, height: 600},
+      slowMo = 0,
+      timeout = 30000,
+      waitForInitialPage = true,
+      debuggingPort,
+    } = options;
+
+    const chromeArguments = [];
+    if (!ignoreDefaultArgs) {
+      chromeArguments.push(...this.defaultArgs(options));
+    } else if (Array.isArray(ignoreDefaultArgs)) {
+      chromeArguments.push(
+        ...this.defaultArgs(options).filter(arg => {
+          return !ignoreDefaultArgs.includes(arg);
+        })
+      );
+    } else {
+      chromeArguments.push(...args);
+    }
+
+    if (
+      !chromeArguments.some(argument => {
+        return argument.startsWith('--remote-debugging-');
+      })
+    ) {
+      if (pipe) {
+        assert(
+          !debuggingPort,
+          'Browser should be launched with either pipe or debugging port - not both.'
+        );
+        chromeArguments.push('--remote-debugging-pipe');
+      } else {
+        chromeArguments.push(`--remote-debugging-port=${debuggingPort || 0}`);
+      }
+    }
+
+    let isTempUserDataDir = false;
+
+    // Check for the user data dir argument, which will always be set even
+    // with a custom directory specified via the userDataDir option.
+    let userDataDirIndex = chromeArguments.findIndex(arg => {
+      return arg.startsWith('--user-data-dir');
+    });
+    if (userDataDirIndex < 0) {
+      isTempUserDataDir = true;
+      chromeArguments.push(
+        `--user-data-dir=${await fs.promises.mkdtemp(
+          path.join(tmpdir(), 'puppeteer_dev_chrome_profile-')
+        )}`
+      );
+      userDataDirIndex = chromeArguments.length - 1;
+    }
+
+    const userDataDir = chromeArguments[userDataDirIndex]!.split('=', 2)[1];
+    assert(typeof userDataDir === 'string', '`--user-data-dir` is malformed');
+
+    let chromeExecutable = executablePath;
+    if (channel) {
+      // executablePath is detected by channel, so it should not be specified by user.
+      assert(
+        !chromeExecutable,
+        '`executablePath` must not be specified when `channel` is given.'
+      );
+
+      chromeExecutable = executablePathForChannel(channel);
+    } else if (!chromeExecutable) {
+      const {missingText, executablePath} = resolveExecutablePath(this);
+      if (missingText) {
+        throw new Error(missingText);
+      }
+      chromeExecutable = executablePath;
+    }
+
+    const usePipe = chromeArguments.includes('--remote-debugging-pipe');
+    const runner = new BrowserRunner(
+      this.product,
+      chromeExecutable,
+      chromeArguments,
+      userDataDir,
+      isTempUserDataDir
+    );
+    runner.start({
+      handleSIGHUP,
+      handleSIGTERM,
+      handleSIGINT,
+      dumpio,
+      env,
+      pipe: usePipe,
+    });
+
+    let browser;
+    try {
+      const connection = await runner.setupConnection({
+        usePipe,
+        timeout,
+        slowMo,
+        preferredRevision: this._preferredRevision,
+      });
+      browser = await Browser._create(
+        this.product,
+        connection,
+        [],
+        ignoreHTTPSErrors,
+        defaultViewport,
+        runner.proc,
+        runner.close.bind(runner),
+        options.targetFilter
+      );
+    } catch (error) {
+      runner.kill();
+      throw error;
+    }
+
+    if (waitForInitialPage) {
+      try {
+        await browser.waitForTarget(
+          t => {
+            return t.type() === 'page';
+          },
+          {timeout}
+        );
+      } catch (error) {
+        await browser.close();
+        throw error;
+      }
+    }
+
+    return browser;
+  }
+
+  defaultArgs(options: BrowserLaunchArgumentOptions = {}): string[] {
+    const chromeArguments = [
+      '--allow-pre-commit-input',
+      '--disable-background-networking',
+      '--enable-features=NetworkServiceInProcess2',
+      '--disable-background-timer-throttling',
+      '--disable-backgrounding-occluded-windows',
+      '--disable-breakpad',
+      '--disable-client-side-phishing-detection',
+      '--disable-component-extensions-with-background-pages',
+      '--disable-default-apps',
+      '--disable-dev-shm-usage',
+      '--disable-extensions',
+      // TODO: remove AvoidUnnecessaryBeforeUnloadCheckSync below
+      // once crbug.com/1324138 is fixed and released.
+      // AcceptCHFrame disabled because of crbug.com/1348106.
+      '--disable-features=Translate,BackForwardCache,AcceptCHFrame,AvoidUnnecessaryBeforeUnloadCheckSync',
+      '--disable-hang-monitor',
+      '--disable-ipc-flooding-protection',
+      '--disable-popup-blocking',
+      '--disable-prompt-on-repost',
+      '--disable-renderer-backgrounding',
+      '--disable-sync',
+      '--force-color-profile=srgb',
+      '--metrics-recording-only',
+      '--no-first-run',
+      '--enable-automation',
+      '--password-store=basic',
+      '--use-mock-keychain',
+      // TODO(sadym): remove '--enable-blink-features=IdleDetection'
+      // once IdleDetection is turned on by default.
+      '--enable-blink-features=IdleDetection',
+      '--export-tagged-pdf',
+    ];
+    const {
+      devtools = false,
+      headless = !devtools,
+      args = [],
+      userDataDir,
+    } = options;
+    if (userDataDir) {
+      chromeArguments.push(`--user-data-dir=${path.resolve(userDataDir)}`);
+    }
+    if (devtools) {
+      chromeArguments.push('--auto-open-devtools-for-tabs');
+    }
+    if (headless) {
+      chromeArguments.push(
+        headless === 'chrome' ? '--headless=chrome' : '--headless',
+        '--hide-scrollbars',
+        '--mute-audio'
+      );
+    }
+    if (
+      args.every(arg => {
+        return arg.startsWith('-');
+      })
+    ) {
+      chromeArguments.push('about:blank');
+    }
+    chromeArguments.push(...args);
+    return chromeArguments;
+  }
+
+  executablePath(channel?: ChromeReleaseChannel): string {
+    if (channel) {
+      return executablePathForChannel(channel);
+    } else {
+      const results = resolveExecutablePath(this);
+      return results.executablePath;
+    }
+  }
+
+  get product(): Product {
+    return 'chrome';
+  }
+}
diff --git a/remote/test/puppeteer/src/node/FirefoxLauncher.ts b/remote/test/puppeteer/src/node/FirefoxLauncher.ts
new file mode 100644
index 0000000000..c27f1b8d8b
--- /dev/null
+++ b/remote/test/puppeteer/src/node/FirefoxLauncher.ts
@@ -0,0 +1,502 @@
+import fs from 'fs';
+import os from 'os';
+import path from 'path';
+import {assert} from '../util/assert.js';
+import {Browser} from '../common/Browser.js';
+import {Product} from '../common/Product.js';
+import {BrowserFetcher} from './BrowserFetcher.js';
+import {BrowserRunner} from './BrowserRunner.js';
+import {
+  BrowserLaunchArgumentOptions,
+  PuppeteerNodeLaunchOptions,
+} from './LaunchOptions.js';
+import {ProductLauncher, resolveExecutablePath} from './ProductLauncher.js';
+import {tmpdir} from './util.js';
+
+/**
+ * @internal
+ */
+export class FirefoxLauncher implements ProductLauncher {
+  /**
+   * @internal
+   */
+  _projectRoot: string | undefined;
+  /**
+   * @internal
+   */
+  _preferredRevision: string;
+  /**
+   * @internal
+   */
+  _isPuppeteerCore: boolean;
+
+  constructor(
+    projectRoot: string | undefined,
+    preferredRevision: string,
+    isPuppeteerCore: boolean
+  ) {
+    this._projectRoot = projectRoot;
+    this._preferredRevision = preferredRevision;
+    this._isPuppeteerCore = isPuppeteerCore;
+  }
+
+  async launch(options: PuppeteerNodeLaunchOptions = {}): Promise<Browser> {
+    const {
+      ignoreDefaultArgs = false,
+      args = [],
+      dumpio = false,
+      executablePath = null,
+      pipe = false,
+      env = process.env,
+      handleSIGINT = true,
+      handleSIGTERM = true,
+      handleSIGHUP = true,
+      ignoreHTTPSErrors = false,
+      defaultViewport = {width: 800, height: 600},
+      slowMo = 0,
+      timeout = 30000,
+      extraPrefsFirefox = {},
+      waitForInitialPage = true,
+      debuggingPort = null,
+    } = options;
+
+    const firefoxArguments = [];
+    if (!ignoreDefaultArgs) {
+      firefoxArguments.push(...this.defaultArgs(options));
+    } else if (Array.isArray(ignoreDefaultArgs)) {
+      firefoxArguments.push(
+        ...this.defaultArgs(options).filter(arg => {
+          return !ignoreDefaultArgs.includes(arg);
+        })
+      );
+    } else {
+      firefoxArguments.push(...args);
+    }
+
+    if (
+      !firefoxArguments.some(argument => {
+        return argument.startsWith('--remote-debugging-');
+      })
+    ) {
+      if (pipe) {
+        assert(
+          debuggingPort === null,
+          'Browser should be launched with either pipe or debugging port - not both.'
+        );
+      }
+      firefoxArguments.push(`--remote-debugging-port=${debuggingPort || 0}`);
+    }
+
+    let userDataDir: string | undefined;
+    let isTempUserDataDir = true;
+
+    // Check for the profile argument, which will always be set even
+    // with a custom directory specified via the userDataDir option.
+    const profileArgIndex = firefoxArguments.findIndex(arg => {
+      return ['-profile', '--profile'].includes(arg);
+    });
+
+    if (profileArgIndex !== -1) {
+      userDataDir = firefoxArguments[profileArgIndex + 1];
+      if (!userDataDir || !fs.existsSync(userDataDir)) {
+        throw new Error(`Firefox profile not found at '${userDataDir}'`);
+      }
+
+      // When using a custom Firefox profile it needs to be populated
+      // with required preferences.
+      isTempUserDataDir = false;
+      const prefs = this.defaultPreferences(extraPrefsFirefox);
+      this.writePreferences(prefs, userDataDir);
+    } else {
+      userDataDir = await this._createProfile(extraPrefsFirefox);
+      firefoxArguments.push('--profile');
+      firefoxArguments.push(userDataDir);
+    }
+
+    await this._updateRevision();
+    let firefoxExecutable = executablePath;
+    if (!executablePath) {
+      const {missingText, executablePath} = resolveExecutablePath(this);
+      if (missingText) {
+        throw new Error(missingText);
+      }
+      firefoxExecutable = executablePath;
+    }
+
+    if (!firefoxExecutable) {
+      throw new Error('firefoxExecutable is not found.');
+    }
+
+    const runner = new BrowserRunner(
+      this.product,
+      firefoxExecutable,
+      firefoxArguments,
+      userDataDir,
+      isTempUserDataDir
+    );
+    runner.start({
+      handleSIGHUP,
+      handleSIGTERM,
+      handleSIGINT,
+      dumpio,
+      env,
+      pipe,
+    });
+
+    let browser;
+    try {
+      const connection = await runner.setupConnection({
+        usePipe: pipe,
+        timeout,
+        slowMo,
+        preferredRevision: this._preferredRevision,
+      });
+      browser = await Browser._create(
+        this.product,
+        connection,
+        [],
+        ignoreHTTPSErrors,
+        defaultViewport,
+        runner.proc,
+        runner.close.bind(runner),
+        options.targetFilter
+      );
+    } catch (error) {
+      runner.kill();
+      throw error;
+    }
+
+    if (waitForInitialPage) {
+      try {
+        await browser.waitForTarget(
+          t => {
+            return t.type() === 'page';
+          },
+          {timeout}
+        );
+      } catch (error) {
+        await browser.close();
+        throw error;
+      }
+    }
+
+    return browser;
+  }
+
+  executablePath(): string {
+    return resolveExecutablePath(this).executablePath;
+  }
+
+  async _updateRevision(): Promise<void> {
+    // replace 'latest' placeholder with actual downloaded revision
+    if (this._preferredRevision === 'latest') {
+      if (!this._projectRoot) {
+        throw new Error(
+          '_projectRoot is undefined. Unable to create a BrowserFetcher.'
+        );
+      }
+      const browserFetcher = new BrowserFetcher(this._projectRoot, {
+        product: this.product,
+      });
+      const localRevisions = await browserFetcher.localRevisions();
+      if (localRevisions[0]) {
+        this._preferredRevision = localRevisions[0];
+      }
+    }
+  }
+
+  get product(): Product {
+    return 'firefox';
+  }
+
+  defaultArgs(options: BrowserLaunchArgumentOptions = {}): string[] {
+    const {
+      devtools = false,
+      headless = !devtools,
+      args = [],
+      userDataDir = null,
+    } = options;
+
+    const firefoxArguments = ['--no-remote'];
+
+    switch (os.platform()) {
+      case 'darwin':
+        firefoxArguments.push('--foreground');
+        break;
+      case 'win32':
+        firefoxArguments.push('--wait-for-browser');
+        break;
+    }
+    if (userDataDir) {
+      firefoxArguments.push('--profile');
+      firefoxArguments.push(userDataDir);
+    }
+    if (headless) {
+      firefoxArguments.push('--headless');
+    }
+    if (devtools) {
+      firefoxArguments.push('--devtools');
+    }
+    if (
+      args.every(arg => {
+        return arg.startsWith('-');
+      })
+    ) {
+      firefoxArguments.push('about:blank');
+    }
+    firefoxArguments.push(...args);
+    return firefoxArguments;
+  }
+
+  defaultPreferences(extraPrefs: {[x: string]: unknown}): {
+    [x: string]: unknown;
+  } {
+    const server = 'dummy.test';
+
+    const defaultPrefs = {
+      // Make sure Shield doesn't hit the network.
+      'app.normandy.api_url': '',
+      // Disable Firefox old build background check
+      'app.update.checkInstallTime': false,
+      // Disable automatically upgrading Firefox
+      'app.update.disabledForTesting': true,
+
+      // Increase the APZ content response timeout to 1 minute
+      'apz.content_response_timeout': 60000,
+
+      // Prevent various error message on the console
+      // jest-puppeteer asserts that no error message is emitted by the console
+      'browser.contentblocking.features.standard':
+        '-tp,tpPrivate,cookieBehavior0,-cm,-fp',
+
+      // Enable the dump function: which sends messages to the system
+      // console
+      // https://bugzilla.mozilla.org/show_bug.cgi?id=1543115
+      'browser.dom.window.dump.enabled': true,
+      // Disable topstories
+      'browser.newtabpage.activity-stream.feeds.system.topstories': false,
+      // Always display a blank page
+      'browser.newtabpage.enabled': false,
+      // Background thumbnails in particular cause grief: and disabling
+      // thumbnails in general cannot hurt
+      'browser.pagethumbnails.capturing_disabled': true,
+
+      // Disable safebrowsing components.
+      'browser.safebrowsing.blockedURIs.enabled': false,
+      'browser.safebrowsing.downloads.enabled': false,
+      'browser.safebrowsing.malware.enabled': false,
+      'browser.safebrowsing.passwords.enabled': false,
+      'browser.safebrowsing.phishing.enabled': false,
+
+      // Disable updates to search engines.
+      'browser.search.update': false,
+      // Do not restore the last open set of tabs if the browser has crashed
+      'browser.sessionstore.resume_from_crash': false,
+      // Skip check for default browser on startup
+      'browser.shell.checkDefaultBrowser': false,
+
+      // Disable newtabpage
+      'browser.startup.homepage': 'about:blank',
+      // Do not redirect user when a milstone upgrade of Firefox is detected
+      'browser.startup.homepage_override.mstone': 'ignore',
+      // Start with a blank page about:blank
+      'browser.startup.page': 0,
+
+      // Do not allow background tabs to be zombified on Android: otherwise for
+      // tests that open additional tabs: the test harness tab itself might get
+      // unloaded
+      'browser.tabs.disableBackgroundZombification': false,
+      // Do not warn when closing all other open tabs
+      'browser.tabs.warnOnCloseOtherTabs': false,
+      // Do not warn when multiple tabs will be opened
+      'browser.tabs.warnOnOpen': false,
+
+      // Disable the UI tour.
+      'browser.uitour.enabled': false,
+      // Turn off search suggestions in the location bar so as not to trigger
+      // network connections.
+      'browser.urlbar.suggest.searches': false,
+      // Disable first run splash page on Windows 10
+      'browser.usedOnWindows10.introURL': '',
+      // Do not warn on quitting Firefox
+      'browser.warnOnQuit': false,
+
+      // Defensively disable data reporting systems
+      'datareporting.healthreport.documentServerURI': `http://${server}/dummy/healthreport/`,
+      'datareporting.healthreport.logging.consoleEnabled': false,
+      'datareporting.healthreport.service.enabled': false,
+      'datareporting.healthreport.service.firstRun': false,
+      'datareporting.healthreport.uploadEnabled': false,
+
+      // Do not show datareporting policy notifications which can interfere with tests
+      'datareporting.policy.dataSubmissionEnabled': false,
+      'datareporting.policy.dataSubmissionPolicyBypassNotification': true,
+
+      // DevTools JSONViewer sometimes fails to load dependencies with its require.js.
+      // This doesn't affect Puppeteer but spams console (Bug 1424372)
+      'devtools.jsonview.enabled': false,
+
+      // Disable popup-blocker
+      'dom.disable_open_during_load': false,
+
+      // Enable the support for File object creation in the content process
+      // Required for |Page.setFileInputFiles| protocol method.
+      'dom.file.createInChild': true,
+
+      // Disable the ProcessHangMonitor
+      'dom.ipc.reportProcessHangs': false,
+
+      // Disable slow script dialogues
+      'dom.max_chrome_script_run_time': 0,
+      'dom.max_script_run_time': 0,
+
+      // Only load extensions from the application and user profile
+      // AddonManager.SCOPE_PROFILE + AddonManager.SCOPE_APPLICATION
+      'extensions.autoDisableScopes': 0,
+      'extensions.enabledScopes': 5,
+
+      // Disable metadata caching for installed add-ons by default
+      'extensions.getAddons.cache.enabled': false,
+
+      // Disable installing any distribution extensions or add-ons.
+      'extensions.installDistroAddons': false,
+
+      // Disabled screenshots extension
+      'extensions.screenshots.disabled': true,
+
+      // Turn off extension updates so they do not bother tests
+      'extensions.update.enabled': false,
+
+      // Turn off extension updates so they do not bother tests
+      'extensions.update.notifyUser': false,
+
+      // Make sure opening about:addons will not hit the network
+      'extensions.webservice.discoverURL': `http://${server}/dummy/discoveryURL`,
+
+      // Temporarily force disable BFCache in parent (https://bit.ly/bug-1732263)
+      'fission.bfcacheInParent': false,
+
+      // Force all web content to use a single content process
+      'fission.webContentIsolationStrategy': 0,
+
+      // Allow the application to have focus even it runs in the background
+      'focusmanager.testmode': true,
+      // Disable useragent updates
+      'general.useragent.updates.enabled': false,
+      // Always use network provider for geolocation tests so we bypass the
+      // macOS dialog raised by the corelocation provider
+      'geo.provider.testing': true,
+      // Do not scan Wifi
+      'geo.wifi.scan': false,
+      // No hang monitor
+      'hangmonitor.timeout': 0,
+      // Show chrome errors and warnings in the error console
+      'javascript.options.showInConsole': true,
+
+      // Disable download and usage of OpenH264: and Widevine plugins
+      'media.gmp-manager.updateEnabled': false,
+      // Prevent various error message on the console
+      // jest-puppeteer asserts that no error message is emitted by the console
+      'network.cookie.cookieBehavior': 0,
+
+      // Disable experimental feature that is only available in Nightly
+      'network.cookie.sameSite.laxByDefault': false,
+
+      // Do not prompt for temporary redirects
+      'network.http.prompt-temp-redirect': false,
+
+      // Disable speculative connections so they are not reported as leaking
+      // when they are hanging around
+      'network.http.speculative-parallel-limit': 0,
+
+      // Do not automatically switch between offline and online
+      'network.manage-offline-status': false,
+
+      // Make sure SNTP requests do not hit the network
+      'network.sntp.pools': server,
+
+      // Disable Flash.
+      'plugin.state.flash': 0,
+
+      'privacy.trackingprotection.enabled': false,
+
+      // Can be removed once Firefox 89 is no longer supported
+      // https://bugzilla.mozilla.org/show_bug.cgi?id=1710839
+      'remote.enabled': true,
+
+      // Don't do network connections for mitm priming
+      'security.certerrors.mitm.priming.enabled': false,
+      // Local documents have access to all other local documents,
+      // including directory listings
+      'security.fileuri.strict_origin_policy': false,
+      // Do not wait for the notification button security delay
+      'security.notification_enable_delay': 0,
+
+      // Ensure blocklist updates do not hit the network
+      'services.settings.server': `http://${server}/dummy/blocklist/`,
+
+      // Do not automatically fill sign-in forms with known usernames and
+      // passwords
+      'signon.autofillForms': false,
+      // Disable password capture, so that tests that include forms are not
+      // influenced by the presence of the persistent doorhanger notification
+      'signon.rememberSignons': false,
+
+      // Disable first-run welcome page
+      'startup.homepage_welcome_url': 'about:blank',
+
+      // Disable first-run welcome page
+      'startup.homepage_welcome_url.additional': '',
+
+      // Disable browser animations (tabs, fullscreen, sliding alerts)
+      'toolkit.cosmeticAnimations.enabled': false,
+
+      // Prevent starting into safe mode after application crashes
+      'toolkit.startup.max_resumed_crashes': -1,
+    };
+
+    return Object.assign(defaultPrefs, extraPrefs);
+  }
+
+  /**
+   * Populates the user.js file with custom preferences as needed to allow
+   * Firefox's CDP support to properly function. These preferences will be
+   * automatically copied over to prefs.js during startup of Firefox. To be
+   * able to restore the original values of preferences a backup of prefs.js
+   * will be created.
+   *
+   * @param prefs - List of preferences to add.
+   * @param profilePath - Firefox profile to write the preferences to.
+   */
+  async writePreferences(
+    prefs: {[x: string]: unknown},
+    profilePath: string
+  ): Promise<void> {
+    const lines = Object.entries(prefs).map(([key, value]) => {
+      return `user_pref(${JSON.stringify(key)}, ${JSON.stringify(value)});`;
+    });
+
+    await fs.promises.writeFile(
+      path.join(profilePath, 'user.js'),
+      lines.join('\n')
+    );
+
+    // Create a backup of the preferences file if it already exitsts.
+    const prefsPath = path.join(profilePath, 'prefs.js');
+    if (fs.existsSync(prefsPath)) {
+      const prefsBackupPath = path.join(profilePath, 'prefs.js.puppeteer');
+      await fs.promises.copyFile(prefsPath, prefsBackupPath);
+    }
+  }
+
+  async _createProfile(extraPrefs: {[x: string]: unknown}): Promise<string> {
+    const temporaryProfilePath = await fs.promises.mkdtemp(
+      path.join(tmpdir(), 'puppeteer_dev_firefox_profile-')
+    );
+
+    const prefs = this.defaultPreferences(extraPrefs);
+    await this.writePreferences(prefs, temporaryProfilePath);
+
+    return temporaryProfilePath;
+  }
+}
diff --git a/remote/test/puppeteer/src/node/LaunchOptions.ts b/remote/test/puppeteer/src/node/LaunchOptions.ts
new file mode 100644
index 0000000000..ab10642d1b
--- /dev/null
+++ b/remote/test/puppeteer/src/node/LaunchOptions.ts
@@ -0,0 +1,144 @@
+/**
+ * Copyright 2020 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import {BrowserConnectOptions} from '../common/BrowserConnector.js';
+import {Product} from '../common/Product.js';
+
+/**
+ * Launcher options that only apply to Chrome.
+ *
+ * @public
+ */
+export interface BrowserLaunchArgumentOptions {
+  /**
+   * Whether to run the browser in headless mode.
+   * @defaultValue true
+   */
+  headless?: boolean | 'chrome';
+  /**
+   * Path to a user data directory.
+   * {@link https://chromium.googlesource.com/chromium/src/+/refs/heads/main/docs/user_data_dir.md | see the Chromium docs}
+   * for more info.
+   */
+  userDataDir?: string;
+  /**
+   * Whether to auto-open a DevTools panel for each tab. If this is set to
+   * `true`, then `headless` will be forced to `false`.
+   * @defaultValue `false`
+   */
+  devtools?: boolean;
+  /**
+   *
+   */
+  debuggingPort?: number;
+  /**
+   * Additional command line arguments to pass to the browser instance.
+   */
+  args?: string[];
+}
+/**
+ * @public
+ */
+export type ChromeReleaseChannel =
+  | 'chrome'
+  | 'chrome-beta'
+  | 'chrome-canary'
+  | 'chrome-dev';
+
+/**
+ * Generic launch options that can be passed when launching any browser.
+ * @public
+ */
+export interface LaunchOptions {
+  /**
+   * Chrome Release Channel
+   */
+  channel?: ChromeReleaseChannel;
+  /**
+   * Path to a browser executable to use instead of the bundled Chromium. Note
+   * that Puppeteer is only guaranteed to work with the bundled Chromium, so use
+   * this setting at your own risk.
+   */
+  executablePath?: string;
+  /**
+   * If `true`, do not use `puppeteer.defaultArgs()` when creating a browser. If
+   * an array is provided, these args will be filtered out. Use this with care -
+   * you probably want the default arguments Puppeteer uses.
+   * @defaultValue false
+   */
+  ignoreDefaultArgs?: boolean | string[];
+  /**
+   * Close the browser process on `Ctrl+C`.
+   * @defaultValue `true`
+   */
+  handleSIGINT?: boolean;
+  /**
+   * Close the browser process on `SIGTERM`.
+   * @defaultValue `true`
+   */
+  handleSIGTERM?: boolean;
+  /**
+   * Close the browser process on `SIGHUP`.
+   * @defaultValue `true`
+   */
+  handleSIGHUP?: boolean;
+  /**
+   * Maximum time in milliseconds to wait for the browser to start.
+   * Pass `0` to disable the timeout.
+   * @defaultValue 30000 (30 seconds).
+   */
+  timeout?: number;
+  /**
+   * If true, pipes the browser process stdout and stderr to `process.stdout`
+   * and `process.stderr`.
+   * @defaultValue false
+   */
+  dumpio?: boolean;
+  /**
+   * Specify environment variables that will be visible to the browser.
+   * @defaultValue The contents of `process.env`.
+   */
+  env?: Record<string, string | undefined>;
+  /**
+   * Connect to a browser over a pipe instead of a WebSocket.
+   * @defaultValue false
+   */
+  pipe?: boolean;
+  /**
+   * Which browser to launch.
+   * @defaultValue `chrome`
+   */
+  product?: Product;
+  /**
+   * {@link https://searchfox.org/mozilla-release/source/modules/libpref/init/all.js | Additional preferences } that can be passed when launching with Firefox.
+   */
+  extraPrefsFirefox?: Record<string, unknown>;
+  /**
+   * Whether to wait for the initial page to be ready.
+   * Useful when a user explicitly disables that (e.g. `--no-startup-window` for Chrome).
+   * @defaultValue true
+   */
+  waitForInitialPage?: boolean;
+}
+
+/**
+ * Utility type exposed to enable users to define options that can be passed to
+ * `puppeteer.launch` without having to list the set of all types.
+ * @public
+ */
+export type PuppeteerNodeLaunchOptions = BrowserLaunchArgumentOptions &
+  LaunchOptions &
+  BrowserConnectOptions;
diff --git a/remote/test/puppeteer/src/node/NodeWebSocketTransport.ts b/remote/test/puppeteer/src/node/NodeWebSocketTransport.ts
new file mode 100644
index 0000000000..fbe8e7c92c
--- /dev/null
+++ b/remote/test/puppeteer/src/node/NodeWebSocketTransport.ts
@@ -0,0 +1,69 @@
+/**
+ * Copyright 2018 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import NodeWebSocket from 'ws';
+import {ConnectionTransport} from '../common/ConnectionTransport.js';
+import {packageVersion} from '../generated/version.js';
+
+/**
+ * @internal
+ */
+export class NodeWebSocketTransport implements ConnectionTransport {
+  static create(url: string): Promise<NodeWebSocketTransport> {
+    return new Promise((resolve, reject) => {
+      const ws = new NodeWebSocket(url, [], {
+        followRedirects: true,
+        perMessageDeflate: false,
+        maxPayload: 256 * 1024 * 1024, // 256Mb
+        headers: {
+          'User-Agent': `Puppeteer ${packageVersion}`,
+        },
+      });
+
+      ws.addEventListener('open', () => {
+        return resolve(new NodeWebSocketTransport(ws));
+      });
+      ws.addEventListener('error', reject);
+    });
+  }
+
+  #ws: NodeWebSocket;
+  onmessage?: (message: NodeWebSocket.Data) => void;
+  onclose?: () => void;
+
+  constructor(ws: NodeWebSocket) {
+    this.#ws = ws;
+    this.#ws.addEventListener('message', event => {
+      if (this.onmessage) {
+        this.onmessage.call(null, event.data);
+      }
+    });
+    this.#ws.addEventListener('close', () => {
+      if (this.onclose) {
+        this.onclose.call(null);
+      }
+    });
+    // Silently ignore all errors - we don't know what to do with them.
+    this.#ws.addEventListener('error', () => {});
+  }
+
+  send(message: string): void {
+    this.#ws.send(message);
+  }
+
+  close(): void {
+    this.#ws.close();
+  }
+}
diff --git a/remote/test/puppeteer/src/node/PipeTransport.ts b/remote/test/puppeteer/src/node/PipeTransport.ts
new file mode 100644
index 0000000000..3b7b042b0e
--- /dev/null
+++ b/remote/test/puppeteer/src/node/PipeTransport.ts
@@ -0,0 +1,93 @@
+/**
+ * Copyright 2018 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import {assert} from '../util/assert.js';
+import {ConnectionTransport} from '../common/ConnectionTransport.js';
+import {
+  addEventListener,
+  debugError,
+  PuppeteerEventListener,
+  removeEventListeners,
+} from '../common/util.js';
+
+/**
+ * @internal
+ */
+export class PipeTransport implements ConnectionTransport {
+  #pipeWrite: NodeJS.WritableStream;
+  #eventListeners: PuppeteerEventListener[];
+
+  #isClosed = false;
+  #pendingMessage = '';
+
+  onclose?: () => void;
+  onmessage?: (value: string) => void;
+
+  constructor(
+    pipeWrite: NodeJS.WritableStream,
+    pipeRead: NodeJS.ReadableStream
+  ) {
+    this.#pipeWrite = pipeWrite;
+    this.#eventListeners = [
+      addEventListener(pipeRead, 'data', buffer => {
+        return this.#dispatch(buffer);
+      }),
+      addEventListener(pipeRead, 'close', () => {
+        if (this.onclose) {
+          this.onclose.call(null);
+        }
+      }),
+      addEventListener(pipeRead, 'error', debugError),
+      addEventListener(pipeWrite, 'error', debugError),
+    ];
+  }
+
+  send(message: string): void {
+    assert(!this.#isClosed, '`PipeTransport` is closed.');
+
+    this.#pipeWrite.write(message);
+    this.#pipeWrite.write('\0');
+  }
+
+  #dispatch(buffer: Buffer): void {
+    assert(!this.#isClosed, '`PipeTransport` is closed.');
+
+    let end = buffer.indexOf('\0');
+    if (end === -1) {
+      this.#pendingMessage += buffer.toString();
+      return;
+    }
+    const message = this.#pendingMessage + buffer.toString(undefined, 0, end);
+    if (this.onmessage) {
+      this.onmessage.call(null, message);
+    }
+
+    let start = end + 1;
+    end = buffer.indexOf('\0', start);
+    while (end !== -1) {
+      if (this.onmessage) {
+        this.onmessage.call(null, buffer.toString(undefined, start, end));
+      }
+      start = end + 1;
+      end = buffer.indexOf('\0', start);
+    }
+    this.#pendingMessage = buffer.toString(undefined, start);
+  }
+
+  close(): void {
+    this.#isClosed = true;
+    removeEventListeners(this.#eventListeners);
+  }
+}
diff --git a/remote/test/puppeteer/src/node/ProductLauncher.ts b/remote/test/puppeteer/src/node/ProductLauncher.ts
new file mode 100644
index 0000000000..a1d7c84f46
--- /dev/null
+++ b/remote/test/puppeteer/src/node/ProductLauncher.ts
@@ -0,0 +1,217 @@
+/**
+ * Copyright 2017 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import os from 'os';
+
+import {Browser} from '../common/Browser.js';
+import {BrowserFetcher} from './BrowserFetcher.js';
+
+import {
+  BrowserLaunchArgumentOptions,
+  ChromeReleaseChannel,
+  PuppeteerNodeLaunchOptions,
+} from './LaunchOptions.js';
+
+import {Product} from '../common/Product.js';
+import {ChromeLauncher} from './ChromeLauncher.js';
+import {FirefoxLauncher} from './FirefoxLauncher.js';
+import {accessSync, existsSync} from 'fs';
+
+/**
+ * Describes a launcher - a class that is able to create and launch a browser instance.
+ * @public
+ */
+export interface ProductLauncher {
+  launch(object: PuppeteerNodeLaunchOptions): Promise<Browser>;
+  executablePath: (path?: any) => string;
+  defaultArgs(object: BrowserLaunchArgumentOptions): string[];
+  product: Product;
+}
+
+/**
+ * @internal
+ */
+export function executablePathForChannel(
+  channel: ChromeReleaseChannel
+): string {
+  const platform = os.platform();
+
+  let chromePath: string | undefined;
+  switch (platform) {
+    case 'win32':
+      switch (channel) {
+        case 'chrome':
+          chromePath = `${process.env['PROGRAMFILES']}\\Google\\Chrome\\Application\\chrome.exe`;
+          break;
+        case 'chrome-beta':
+          chromePath = `${process.env['PROGRAMFILES']}\\Google\\Chrome Beta\\Application\\chrome.exe`;
+          break;
+        case 'chrome-canary':
+          chromePath = `${process.env['PROGRAMFILES']}\\Google\\Chrome SxS\\Application\\chrome.exe`;
+          break;
+        case 'chrome-dev':
+          chromePath = `${process.env['PROGRAMFILES']}\\Google\\Chrome Dev\\Application\\chrome.exe`;
+          break;
+      }
+      break;
+    case 'darwin':
+      switch (channel) {
+        case 'chrome':
+          chromePath =
+            '/Applications/Google Chrome.app/Contents/MacOS/Google Chrome';
+          break;
+        case 'chrome-beta':
+          chromePath =
+            '/Applications/Google Chrome Beta.app/Contents/MacOS/Google Chrome Beta';
+          break;
+        case 'chrome-canary':
+          chromePath =
+            '/Applications/Google Chrome Canary.app/Contents/MacOS/Google Chrome Canary';
+          break;
+        case 'chrome-dev':
+          chromePath =
+            '/Applications/Google Chrome Dev.app/Contents/MacOS/Google Chrome Dev';
+          break;
+      }
+      break;
+    case 'linux':
+      switch (channel) {
+        case 'chrome':
+          chromePath = '/opt/google/chrome/chrome';
+          break;
+        case 'chrome-beta':
+          chromePath = '/opt/google/chrome-beta/chrome';
+          break;
+        case 'chrome-dev':
+          chromePath = '/opt/google/chrome-unstable/chrome';
+          break;
+      }
+      break;
+  }
+
+  if (!chromePath) {
+    throw new Error(
+      `Unable to detect browser executable path for '${channel}' on ${platform}.`
+    );
+  }
+
+  // Check if Chrome exists and is accessible.
+  try {
+    accessSync(chromePath);
+  } catch (error) {
+    throw new Error(
+      `Could not find Google Chrome executable for channel '${channel}' at '${chromePath}'.`
+    );
+  }
+
+  return chromePath;
+}
+
+/**
+ * @internal
+ */
+export function resolveExecutablePath(
+  launcher: ChromeLauncher | FirefoxLauncher
+): {
+  executablePath: string;
+  missingText?: string;
+} {
+  const {product, _isPuppeteerCore, _projectRoot, _preferredRevision} =
+    launcher;
+  let downloadPath: string | undefined;
+  // puppeteer-core doesn't take into account PUPPETEER_* env variables.
+  if (!_isPuppeteerCore) {
+    const executablePath =
+      process.env['PUPPETEER_EXECUTABLE_PATH'] ||
+      process.env['npm_config_puppeteer_executable_path'] ||
+      process.env['npm_package_config_puppeteer_executable_path'];
+    if (executablePath) {
+      const missingText = !existsSync(executablePath)
+        ? 'Tried to use PUPPETEER_EXECUTABLE_PATH env variable to launch browser but did not find any executable at: ' +
+          executablePath
+        : undefined;
+      return {executablePath, missingText};
+    }
+    const ubuntuChromiumPath = '/usr/bin/chromium-browser';
+    if (
+      product === 'chrome' &&
+      os.platform() !== 'darwin' &&
+      os.arch() === 'arm64' &&
+      existsSync(ubuntuChromiumPath)
+    ) {
+      return {executablePath: ubuntuChromiumPath, missingText: undefined};
+    }
+    downloadPath =
+      process.env['PUPPETEER_DOWNLOAD_PATH'] ||
+      process.env['npm_config_puppeteer_download_path'] ||
+      process.env['npm_package_config_puppeteer_download_path'];
+  }
+  if (!_projectRoot) {
+    throw new Error(
+      '_projectRoot is undefined. Unable to create a BrowserFetcher.'
+    );
+  }
+  const browserFetcher = new BrowserFetcher(_projectRoot, {
+    product: product,
+    path: downloadPath,
+  });
+
+  if (!_isPuppeteerCore && product === 'chrome') {
+    const revision = process.env['PUPPETEER_CHROMIUM_REVISION'];
+    if (revision) {
+      const revisionInfo = browserFetcher.revisionInfo(revision);
+      const missingText = !revisionInfo.local
+        ? 'Tried to use PUPPETEER_CHROMIUM_REVISION env variable to launch browser but did not find executable at: ' +
+          revisionInfo.executablePath
+        : undefined;
+      return {executablePath: revisionInfo.executablePath, missingText};
+    }
+  }
+  const revisionInfo = browserFetcher.revisionInfo(_preferredRevision);
+
+  const firefoxHelp = `Run \`PUPPETEER_PRODUCT=firefox npm install\` to download a supported Firefox browser binary.`;
+  const chromeHelp = `Run \`npm install\` to download the correct Chromium revision (${launcher._preferredRevision}).`;
+  const missingText = !revisionInfo.local
+    ? `Could not find expected browser (${product}) locally. ${
+        product === 'chrome' ? chromeHelp : firefoxHelp
+      }`
+    : undefined;
+  return {executablePath: revisionInfo.executablePath, missingText};
+}
+
+/**
+ * @internal
+ */
+export function createLauncher(
+  projectRoot: string | undefined,
+  preferredRevision: string,
+  isPuppeteerCore: boolean,
+  product: Product = 'chrome'
+): ProductLauncher {
+  switch (product) {
+    case 'firefox':
+      return new FirefoxLauncher(
+        projectRoot,
+        preferredRevision,
+        isPuppeteerCore
+      );
+    case 'chrome':
+      return new ChromeLauncher(
+        projectRoot,
+        preferredRevision,
+        isPuppeteerCore
+      );
+  }
+}
diff --git a/remote/test/puppeteer/src/node/Puppeteer.ts b/remote/test/puppeteer/src/node/Puppeteer.ts
new file mode 100644
index 0000000000..374b861648
--- /dev/null
+++ b/remote/test/puppeteer/src/node/Puppeteer.ts
@@ -0,0 +1,244 @@
+/**
+ * Copyright 2020 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import {
+  Puppeteer,
+  CommonPuppeteerSettings,
+  ConnectOptions,
+} from '../common/Puppeteer.js';
+import {BrowserFetcher, BrowserFetcherOptions} from './BrowserFetcher.js';
+import {LaunchOptions, BrowserLaunchArgumentOptions} from './LaunchOptions.js';
+import {BrowserConnectOptions} from '../common/BrowserConnector.js';
+import {Browser} from '../common/Browser.js';
+import {createLauncher, ProductLauncher} from './ProductLauncher.js';
+import {PUPPETEER_REVISIONS} from '../revisions.js';
+import {Product} from '../common/Product.js';
+
+/**
+ * @public
+ */
+export interface PuppeteerLaunchOptions
+  extends LaunchOptions,
+    BrowserLaunchArgumentOptions,
+    BrowserConnectOptions {
+  product?: Product;
+  extraPrefsFirefox?: Record<string, unknown>;
+}
+
+/**
+ * Extends the main {@link Puppeteer} class with Node specific behaviour for
+ * fetching and downloading browsers.
+ *
+ * If you're using Puppeteer in a Node environment, this is the class you'll get
+ * when you run `require('puppeteer')` (or the equivalent ES `import`).
+ *
+ * @remarks
+ * The most common method to use is {@link PuppeteerNode.launch | launch}, which
+ * is used to launch and connect to a new browser instance.
+ *
+ * See {@link Puppeteer | the main Puppeteer class} for methods common to all
+ * environments, such as {@link Puppeteer.connect}.
+ *
+ * @example
+ * The following is a typical example of using Puppeteer to drive automation:
+ *
+ * ```ts
+ * const puppeteer = require('puppeteer');
+ *
+ * (async () => {
+ *   const browser = await puppeteer.launch();
+ *   const page = await browser.newPage();
+ *   await page.goto('https://www.google.com');
+ *   // other actions...
+ *   await browser.close();
+ * })();
+ * ```
+ *
+ * Once you have created a `page` you have access to a large API to interact
+ * with the page, navigate, or find certain elements in that page.
+ * The {@link Page | `page` documentation} lists all the available methods.
+ *
+ * @public
+ */
+export class PuppeteerNode extends Puppeteer {
+  #launcher?: ProductLauncher;
+  #projectRoot?: string;
+  #productName?: Product;
+
+  _preferredRevision: string;
+
+  /**
+   * @internal
+   */
+  constructor(
+    settings: {
+      projectRoot?: string;
+      preferredRevision: string;
+      productName?: Product;
+    } & CommonPuppeteerSettings
+  ) {
+    const {projectRoot, preferredRevision, productName, ...commonSettings} =
+      settings;
+    super(commonSettings);
+    this.#projectRoot = projectRoot;
+    this.#productName = productName;
+    this._preferredRevision = preferredRevision;
+
+    this.connect = this.connect.bind(this);
+    this.launch = this.launch.bind(this);
+    this.executablePath = this.executablePath.bind(this);
+    this.defaultArgs = this.defaultArgs.bind(this);
+    this.createBrowserFetcher = this.createBrowserFetcher.bind(this);
+  }
+
+  /**
+   * This method attaches Puppeteer to an existing browser instance.
+   *
+   * @param options - Set of configurable options to set on the browser.
+   * @returns Promise which resolves to browser instance.
+   */
+  override connect(options: ConnectOptions): Promise<Browser> {
+    return super.connect(options);
+  }
+
+  /**
+   * @internal
+   */
+  get _productName(): Product | undefined {
+    return this.#productName;
+  }
+  set _productName(name: Product | undefined) {
+    if (this.#productName !== name) {
+      this._changedProduct = true;
+    }
+    this.#productName = name;
+  }
+
+  /**
+   * Launches puppeteer and launches a browser instance with given arguments and
+   * options when specified.
+   *
+   * @example
+   * You can use `ignoreDefaultArgs` to filter out `--mute-audio` from default arguments:
+   *
+   * ```ts
+   * const browser = await puppeteer.launch({
+   *   ignoreDefaultArgs: ['--mute-audio'],
+   * });
+   * ```
+   *
+   * @remarks
+   * **NOTE** Puppeteer can also be used to control the Chrome browser, but it
+   * works best with the version of Chromium it is bundled with. There is no
+   * guarantee it will work with any other version. Use `executablePath` option
+   * with extreme caution. If Google Chrome (rather than Chromium) is preferred,
+   * a {@link https://www.google.com/chrome/browser/canary.html | Chrome Canary}
+   * or
+   * {@link https://www.chromium.org/getting-involved/dev-channel | Dev Channel}
+   * build is suggested. In `puppeteer.launch([options])`, any mention of
+   * Chromium also applies to Chrome. See
+   * {@link https://www.howtogeek.com/202825/what%E2%80%99s-the-difference-between-chromium-and-chrome/ | this article}
+   * for a description of the differences between Chromium and Chrome.
+   * {@link https://chromium.googlesource.com/chromium/src/+/lkgr/docs/chromium_browser_vs_google_chrome.md | This article}
+   * describes some differences for Linux users.
+   *
+   * @param options - Set of configurable options to set on the browser.
+   * @returns Promise which resolves to browser instance.
+   */
+  launch(options: PuppeteerLaunchOptions = {}): Promise<Browser> {
+    if (options.product) {
+      this._productName = options.product;
+    }
+    return this._launcher.launch(options);
+  }
+
+  /**
+   * @remarks
+   * **NOTE** `puppeteer.executablePath()` is affected by the
+   * `PUPPETEER_EXECUTABLE_PATH` and `PUPPETEER_CHROMIUM_REVISION` environment
+   * variables.
+   *
+   * @returns A path where Puppeteer expects to find the bundled browser. The
+   * browser binary might not be there if the download was skipped with the
+   * `PUPPETEER_SKIP_DOWNLOAD` environment variable.
+   */
+  executablePath(channel?: string): string {
+    return this._launcher.executablePath(channel);
+  }
+
+  /**
+   * @internal
+   */
+  get _launcher(): ProductLauncher {
+    if (
+      !this.#launcher ||
+      this.#launcher.product !== this._productName ||
+      this._changedProduct
+    ) {
+      switch (this._productName) {
+        case 'firefox':
+          this._preferredRevision = PUPPETEER_REVISIONS.firefox;
+          break;
+        case 'chrome':
+        default:
+          this._preferredRevision = PUPPETEER_REVISIONS.chromium;
+      }
+      this._changedProduct = false;
+      this.#launcher = createLauncher(
+        this.#projectRoot,
+        this._preferredRevision,
+        this._isPuppeteerCore,
+        this._productName
+      );
+    }
+    return this.#launcher;
+  }
+
+  /**
+   * The name of the browser that is under automation (`"chrome"` or
+   * `"firefox"`)
+   *
+   * @remarks
+   * The product is set by the `PUPPETEER_PRODUCT` environment variable or the
+   * `product` option in `puppeteer.launch([options])` and defaults to `chrome`.
+   * Firefox support is experimental.
+   */
+  get product(): string {
+    return this._launcher.product;
+  }
+
+  /**
+   * @param options - Set of configurable options to set on the browser.
+   * @returns The default flags that Chromium will be launched with.
+   */
+  defaultArgs(options: BrowserLaunchArgumentOptions = {}): string[] {
+    return this._launcher.defaultArgs(options);
+  }
+
+  /**
+   * @param options - Set of configurable options to specify the settings of the
+   * BrowserFetcher.
+   * @returns A new BrowserFetcher instance.
+   */
+  createBrowserFetcher(options: BrowserFetcherOptions): BrowserFetcher {
+    if (!this.#projectRoot) {
+      throw new Error(
+        '_projectRoot is undefined. Unable to create a BrowserFetcher.'
+      );
+    }
+    return new BrowserFetcher(this.#projectRoot, options);
+  }
+}
diff --git a/remote/test/puppeteer/src/node/install.ts b/remote/test/puppeteer/src/node/install.ts
new file mode 100644
index 0000000000..9480a33470
--- /dev/null
+++ b/remote/test/puppeteer/src/node/install.ts
@@ -0,0 +1,232 @@
+/**
+ * Copyright 2020 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import https, {RequestOptions} from 'https';
+import ProgressBar from 'progress';
+import URL from 'url';
+import puppeteer from '../puppeteer.js';
+import {PUPPETEER_REVISIONS} from '../revisions.js';
+import {PuppeteerNode} from './Puppeteer.js';
+import createHttpsProxyAgent, {HttpsProxyAgentOptions} from 'https-proxy-agent';
+import {getProxyForUrl} from 'proxy-from-env';
+
+/**
+ * @internal
+ */
+const supportedProducts = {
+  chrome: 'Chromium',
+  firefox: 'Firefox Nightly',
+} as const;
+
+/**
+ * @internal
+ */
+function getProduct(input: string): 'chrome' | 'firefox' {
+  if (input !== 'chrome' && input !== 'firefox') {
+    throw new Error(`Unsupported product ${input}`);
+  }
+  return input;
+}
+
+/**
+ * @internal
+ */
+export async function downloadBrowser(): Promise<void> {
+  const downloadHost =
+    process.env['PUPPETEER_DOWNLOAD_HOST'] ||
+    process.env['npm_config_puppeteer_download_host'] ||
+    process.env['npm_package_config_puppeteer_download_host'];
+  const product = getProduct(
+    process.env['PUPPETEER_PRODUCT'] ||
+      process.env['npm_config_puppeteer_product'] ||
+      process.env['npm_package_config_puppeteer_product'] ||
+      'chrome'
+  );
+  const downloadPath =
+    process.env['PUPPETEER_DOWNLOAD_PATH'] ||
+    process.env['npm_config_puppeteer_download_path'] ||
+    process.env['npm_package_config_puppeteer_download_path'];
+  const browserFetcher = (puppeteer as PuppeteerNode).createBrowserFetcher({
+    product,
+    host: downloadHost,
+    path: downloadPath,
+  });
+  const revision = await getRevision();
+  await fetchBinary(revision);
+
+  async function getRevision(): Promise<string> {
+    if (product === 'chrome') {
+      return (
+        process.env['PUPPETEER_CHROMIUM_REVISION'] ||
+        process.env['npm_config_puppeteer_chromium_revision'] ||
+        PUPPETEER_REVISIONS.chromium
+      );
+    } else if (product === 'firefox') {
+      (puppeteer as PuppeteerNode)._preferredRevision =
+        PUPPETEER_REVISIONS.firefox;
+      return getFirefoxNightlyVersion().catch(error => {
+        console.error(error);
+        process.exit(1);
+      });
+    } else {
+      throw new Error(`Unsupported product ${product}`);
+    }
+  }
+
+  function fetchBinary(revision: string) {
+    const revisionInfo = browserFetcher.revisionInfo(revision);
+
+    // Do nothing if the revision is already downloaded.
+    if (revisionInfo.local) {
+      logPolitely(
+        `${supportedProducts[product]} is already in ${revisionInfo.folderPath}; skipping download.`
+      );
+      return;
+    }
+
+    // Override current environment proxy settings with npm configuration, if any.
+    const NPM_HTTPS_PROXY =
+      process.env['npm_config_https_proxy'] || process.env['npm_config_proxy'];
+    const NPM_HTTP_PROXY =
+      process.env['npm_config_http_proxy'] || process.env['npm_config_proxy'];
+    const NPM_NO_PROXY = process.env['npm_config_no_proxy'];
+
+    if (NPM_HTTPS_PROXY) {
+      process.env['HTTPS_PROXY'] = NPM_HTTPS_PROXY;
+    }
+    if (NPM_HTTP_PROXY) {
+      process.env['HTTP_PROXY'] = NPM_HTTP_PROXY;
+    }
+    if (NPM_NO_PROXY) {
+      process.env['NO_PROXY'] = NPM_NO_PROXY;
+    }
+
+    function onSuccess(localRevisions: string[]): void {
+      logPolitely(
+        `${supportedProducts[product]} (${revisionInfo.revision}) downloaded to ${revisionInfo.folderPath}`
+      );
+      localRevisions = localRevisions.filter(revision => {
+        return revision !== revisionInfo.revision;
+      });
+      const cleanupOldVersions = localRevisions.map(revision => {
+        return browserFetcher.remove(revision);
+      });
+      Promise.all([...cleanupOldVersions]);
+    }
+
+    function onError(error: Error) {
+      console.error(
+        `ERROR: Failed to set up ${supportedProducts[product]} r${revision}! Set "PUPPETEER_SKIP_DOWNLOAD" env variable to skip download.`
+      );
+      console.error(error);
+      process.exit(1);
+    }
+
+    let progressBar: ProgressBar | null = null;
+    let lastDownloadedBytes = 0;
+    function onProgress(downloadedBytes: number, totalBytes: number) {
+      if (!progressBar) {
+        progressBar = new ProgressBar(
+          `Downloading ${
+            supportedProducts[product]
+          } r${revision} - ${toMegabytes(totalBytes)} [:bar] :percent :etas `,
+          {
+            complete: '=',
+            incomplete: ' ',
+            width: 20,
+            total: totalBytes,
+          }
+        );
+      }
+      const delta = downloadedBytes - lastDownloadedBytes;
+      lastDownloadedBytes = downloadedBytes;
+      progressBar.tick(delta);
+    }
+
+    return browserFetcher
+      .download(revisionInfo.revision, onProgress)
+      .then(() => {
+        return browserFetcher.localRevisions();
+      })
+      .then(onSuccess)
+      .catch(onError);
+  }
+
+  function toMegabytes(bytes: number) {
+    const mb = bytes / 1024 / 1024;
+    return `${Math.round(mb * 10) / 10} Mb`;
+  }
+
+  async function getFirefoxNightlyVersion(): Promise<string> {
+    const firefoxVersionsUrl =
+      'https://product-details.mozilla.org/1.0/firefox_versions.json';
+
+    const proxyURL = getProxyForUrl(firefoxVersionsUrl);
+
+    const requestOptions: RequestOptions = {};
+
+    if (proxyURL) {
+      const parsedProxyURL = URL.parse(proxyURL);
+
+      const proxyOptions = {
+        ...parsedProxyURL,
+        secureProxy: parsedProxyURL.protocol === 'https:',
+      } as HttpsProxyAgentOptions;
+
+      requestOptions.agent = createHttpsProxyAgent(proxyOptions);
+      requestOptions.rejectUnauthorized = false;
+    }
+
+    const promise = new Promise<string>((resolve, reject) => {
+      let data = '';
+      logPolitely(
+        `Requesting latest Firefox Nightly version from ${firefoxVersionsUrl}`
+      );
+      https
+        .get(firefoxVersionsUrl, requestOptions, r => {
+          if (r.statusCode && r.statusCode >= 400) {
+            return reject(new Error(`Got status code ${r.statusCode}`));
+          }
+          r.on('data', chunk => {
+            data += chunk;
+          });
+          r.on('end', () => {
+            try {
+              const versions = JSON.parse(data);
+              return resolve(versions.FIREFOX_NIGHTLY);
+            } catch {
+              return reject(new Error('Firefox version not found'));
+            }
+          });
+        })
+        .on('error', reject);
+    });
+    return promise;
+  }
+}
+
+/**
+ * @internal
+ */
+export function logPolitely(toBeLogged: unknown): void {
+  const logLevel = process.env['npm_config_loglevel'] || '';
+  const logLevelDisplay = ['silent', 'error', 'warn'].indexOf(logLevel) > -1;
+
+  // eslint-disable-next-line no-console
+  if (!logLevelDisplay) {
+    console.log(toBeLogged);
+  }
+}
diff --git a/remote/test/puppeteer/src/node/util.ts b/remote/test/puppeteer/src/node/util.ts
new file mode 100644
index 0000000000..c362a39e65
--- /dev/null
+++ b/remote/test/puppeteer/src/node/util.ts
@@ -0,0 +1,13 @@
+import * as os from 'os';
+
+/**
+ * Gets the temporary directory, either from the environmental variable
+ * `PUPPETEER_TMP_DIR` or the `os.tmpdir`.
+ *
+ * @returns The temporary directory path.
+ *
+ * @internal
+ */
+export const tmpdir = (): string => {
+  return process.env['PUPPETEER_TMP_DIR'] || os.tmpdir();
+};
diff --git a/remote/test/puppeteer/src/puppeteer-core.ts b/remote/test/puppeteer/src/puppeteer-core.ts
new file mode 100644
index 0000000000..50da718345
--- /dev/null
+++ b/remote/test/puppeteer/src/puppeteer-core.ts
@@ -0,0 +1,34 @@
+/**
+ * Copyright 2017 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import {initializePuppeteer} from './initializePuppeteer.js';
+
+export * from './common/NetworkConditions.js';
+export * from './common/QueryHandler.js';
+export * from './common/DeviceDescriptors.js';
+export * from './common/Errors.js';
+
+const puppeteer = initializePuppeteer('puppeteer-core');
+
+export const {
+  connect,
+  createBrowserFetcher,
+  defaultArgs,
+  executablePath,
+  launch,
+} = puppeteer;
+
+export default puppeteer;
diff --git a/remote/test/puppeteer/src/puppeteer.ts b/remote/test/puppeteer/src/puppeteer.ts
new file mode 100644
index 0000000000..63317cbf7d
--- /dev/null
+++ b/remote/test/puppeteer/src/puppeteer.ts
@@ -0,0 +1,39 @@
+/**
+ * Copyright 2017 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import {initializePuppeteer} from './initializePuppeteer.js';
+
+export * from './common/NetworkConditions.js';
+export * from './common/QueryHandler.js';
+export * from './common/DeviceDescriptors.js';
+export * from './common/Errors.js';
+
+export {Protocol} from 'devtools-protocol';
+
+/**
+ * @public
+ */
+const puppeteer = initializePuppeteer('puppeteer');
+
+export const {
+  connect,
+  createBrowserFetcher,
+  defaultArgs,
+  executablePath,
+  launch,
+} = puppeteer;
+
+export default puppeteer;
diff --git a/remote/test/puppeteer/src/revisions.ts b/remote/test/puppeteer/src/revisions.ts
new file mode 100644
index 0000000000..5c7a747a8f
--- /dev/null
+++ b/remote/test/puppeteer/src/revisions.ts
@@ -0,0 +1,23 @@
+/**
+ * Copyright 2020 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * @internal
+ */
+export const PUPPETEER_REVISIONS = Object.freeze({
+  chromium: '1036745',
+  firefox: 'latest',
+});
diff --git a/remote/test/puppeteer/src/templates/README.md b/remote/test/puppeteer/src/templates/README.md
new file mode 100644
index 0000000000..548987eafc
--- /dev/null
+++ b/remote/test/puppeteer/src/templates/README.md
@@ -0,0 +1,3 @@
+# Templated Artifacts
+
+These files are generated as TypeScript files in the `src/generated` folder.
diff --git a/remote/test/puppeteer/src/templates/injected.ts.tmpl b/remote/test/puppeteer/src/templates/injected.ts.tmpl
new file mode 100644
index 0000000000..74146a4115
--- /dev/null
+++ b/remote/test/puppeteer/src/templates/injected.ts.tmpl
@@ -0,0 +1,10 @@
+import {createDeferredPromise} from '../util/DeferredPromise.js';
+
+declare global {
+  const InjectedUtil: {
+    createDeferredPromise: typeof createDeferredPromise;
+  };
+}
+
+/** @internal */
+export const source = SOURCE_CODE;
diff --git a/remote/test/puppeteer/src/templates/version.ts.tmpl b/remote/test/puppeteer/src/templates/version.ts.tmpl
new file mode 100644
index 0000000000..73b984d2ff
--- /dev/null
+++ b/remote/test/puppeteer/src/templates/version.ts.tmpl
@@ -0,0 +1,4 @@
+/**
+ * @internal
+ */
+export const packageVersion = 'PACKAGE_VERSION';
diff --git a/remote/test/puppeteer/src/tsconfig.cjs.json b/remote/test/puppeteer/src/tsconfig.cjs.json
new file mode 100644
index 0000000000..c92ca3f87c
--- /dev/null
+++ b/remote/test/puppeteer/src/tsconfig.cjs.json
@@ -0,0 +1,13 @@
+{
+  "extends": "../tsconfig.base.json",
+  "compilerOptions": {
+    "composite": true,
+    "outDir": "../lib/cjs/puppeteer",
+    "module": "CommonJS"
+  },
+  "references": [
+    {"path": "../vendor/tsconfig.cjs.json"},
+    {"path": "../compat/cjs/tsconfig.json"}
+  ],
+  "exclude": ["injected/injected.ts"]
+}
diff --git a/remote/test/puppeteer/src/tsconfig.esm.json b/remote/test/puppeteer/src/tsconfig.esm.json
new file mode 100644
index 0000000000..aba2f24035
--- /dev/null
+++ b/remote/test/puppeteer/src/tsconfig.esm.json
@@ -0,0 +1,13 @@
+{
+  "extends": "../tsconfig.base.json",
+  "compilerOptions": {
+    "composite": true,
+    "outDir": "../lib/esm/puppeteer",
+    "module": "esnext"
+  },
+  "references": [
+    {"path": "../vendor/tsconfig.esm.json"},
+    {"path": "../compat/esm/tsconfig.json"}
+  ],
+  "exclude": ["injected/injected.ts"]
+}
diff --git a/remote/test/puppeteer/src/types.ts b/remote/test/puppeteer/src/types.ts
new file mode 100644
index 0000000000..00bed28c5a
--- /dev/null
+++ b/remote/test/puppeteer/src/types.ts
@@ -0,0 +1,74 @@
+// AUTOGENERATED - Use `npm run generate:sources` to regenerate.
+
+export * from './common/Accessibility.js';
+export * from './common/AriaQueryHandler.js';
+export * from './common/Browser.js';
+export * from './common/BrowserConnector.js';
+export * from './common/BrowserWebSocketTransport.js';
+export * from './common/ChromeTargetManager.js';
+export * from './common/Connection.js';
+export * from './common/ConnectionTransport.js';
+export * from './common/ConsoleMessage.js';
+export * from './common/Coverage.js';
+export * from './common/Debug.js';
+export * from './common/DeviceDescriptors.js';
+export * from './common/Dialog.js';
+export * from './common/ElementHandle.js';
+export * from './common/EmulationManager.js';
+export * from './common/Errors.js';
+export * from './common/EventEmitter.js';
+export * from './common/ExecutionContext.js';
+export * from './common/fetch.js';
+export * from './common/FileChooser.js';
+export * from './common/FirefoxTargetManager.js';
+export * from './common/Frame.js';
+export * from './common/FrameManager.js';
+export * from './common/HTTPRequest.js';
+export * from './common/HTTPResponse.js';
+export * from './common/Input.js';
+export * from './common/IsolatedWorld.js';
+export * from './common/JSHandle.js';
+export * from './common/LifecycleWatcher.js';
+export * from './common/NetworkConditions.js';
+export * from './common/NetworkEventManager.js';
+export * from './common/NetworkManager.js';
+export * from './common/Page.js';
+export * from './common/PDFOptions.js';
+export * from './common/Product.js';
+export * from './common/Puppeteer.js';
+export * from './common/PuppeteerViewport.js';
+export * from './common/QueryHandler.js';
+export * from './common/SecurityDetails.js';
+export * from './common/Target.js';
+export * from './common/TargetManager.js';
+export * from './common/TaskQueue.js';
+export * from './common/TimeoutSettings.js';
+export * from './common/Tracing.js';
+export * from './common/types.js';
+export * from './common/USKeyboardLayout.js';
+export * from './common/util.js';
+export * from './common/WebWorker.js';
+export * from './compat.d.js';
+export * from './constants.js';
+export * from './environment.js';
+export * from './generated/injected.js';
+export * from './generated/version.js';
+export * from './initializePuppeteer.js';
+export * from './node/BrowserFetcher.js';
+export * from './node/BrowserRunner.js';
+export * from './node/ChromeLauncher.js';
+export * from './node/FirefoxLauncher.js';
+export * from './node/install.js';
+export * from './node/LaunchOptions.js';
+export * from './node/NodeWebSocketTransport.js';
+export * from './node/PipeTransport.js';
+export * from './node/ProductLauncher.js';
+export * from './node/Puppeteer.js';
+export * from './node/util.js';
+export * from './puppeteer.js';
+export * from './revisions.js';
+export * from './util/assert.js';
+export * from './util/DebuggableDeferredPromise.js';
+export * from './util/DeferredPromise.js';
+export * from './util/ErrorLike.js';
+export * from './util/getPackageDirectory.js';
diff --git a/remote/test/puppeteer/src/util/DebuggableDeferredPromise.ts b/remote/test/puppeteer/src/util/DebuggableDeferredPromise.ts
new file mode 100644
index 0000000000..474743273c
--- /dev/null
+++ b/remote/test/puppeteer/src/util/DebuggableDeferredPromise.ts
@@ -0,0 +1,20 @@
+import {DEFERRED_PROMISE_DEBUG_TIMEOUT} from '../environment.js';
+import {DeferredPromise, createDeferredPromise} from './DeferredPromise.js';
+
+/**
+ * Creates and returns a deferred promise using DEFERRED_PROMISE_DEBUG_TIMEOUT
+ * if it's specified or a normal deferred promise otherwise.
+ *
+ * @internal
+ */
+export function createDebuggableDeferredPromise<T>(
+  message: string
+): DeferredPromise<T> {
+  if (DEFERRED_PROMISE_DEBUG_TIMEOUT > 0) {
+    return createDeferredPromise({
+      message,
+      timeout: DEFERRED_PROMISE_DEBUG_TIMEOUT,
+    });
+  }
+  return createDeferredPromise();
+}
diff --git a/remote/test/puppeteer/src/util/DeferredPromise.ts b/remote/test/puppeteer/src/util/DeferredPromise.ts
new file mode 100644
index 0000000000..2f21087ba8
--- /dev/null
+++ b/remote/test/puppeteer/src/util/DeferredPromise.ts
@@ -0,0 +1,68 @@
+import {TimeoutError} from '../common/Errors.js';
+
+/**
+ * @internal
+ */
+export interface DeferredPromise<T> extends Promise<T> {
+  finished: () => boolean;
+  resolved: () => boolean;
+  resolve: (_: T) => void;
+  reject: (_: Error) => void;
+}
+
+/**
+ * @internal
+ */
+export interface DeferredPromiseOptions {
+  message: string;
+  timeout: number;
+}
+
+/**
+ * Creates and returns a promise along with the resolve/reject functions.
+ *
+ * If the promise has not been resolved/rejected within the `timeout` period,
+ * the promise gets rejected with a timeout error. `timeout` has to be greater than 0 or
+ * it is ignored.
+ *
+ * @internal
+ */
+export function createDeferredPromise<T>(
+  opts?: DeferredPromiseOptions
+): DeferredPromise<T> {
+  let isResolved = false;
+  let isRejected = false;
+  let resolver = (_: T): void => {};
+  let rejector = (_: Error) => {};
+  const taskPromise = new Promise<T>((resolve, reject) => {
+    resolver = resolve;
+    rejector = reject;
+  });
+  const timeoutId =
+    opts && opts.timeout > 0
+      ? setTimeout(() => {
+          isRejected = true;
+          rejector(new TimeoutError(opts.message));
+        }, opts.timeout)
+      : undefined;
+  return Object.assign(taskPromise, {
+    resolved: () => {
+      return isResolved;
+    },
+    finished: () => {
+      return isResolved || isRejected;
+    },
+    resolve: (value: T) => {
+      if (timeoutId) {
+        clearTimeout(timeoutId);
+      }
+      isResolved = true;
+      resolver(value);
+    },
+    reject: (err: Error) => {
+      clearTimeout(timeoutId);
+      isRejected = true;
+      rejector(err);
+    },
+  });
+}
diff --git a/remote/test/puppeteer/src/util/ErrorLike.ts b/remote/test/puppeteer/src/util/ErrorLike.ts
new file mode 100644
index 0000000000..e5659ce3e3
--- /dev/null
+++ b/remote/test/puppeteer/src/util/ErrorLike.ts
@@ -0,0 +1,27 @@
+/**
+ * @internal
+ */
+
+export interface ErrorLike extends Error {
+  name: string;
+  message: string;
+}
+/**
+ * @internal
+ */
+
+export function isErrorLike(obj: unknown): obj is ErrorLike {
+  return (
+    typeof obj === 'object' && obj !== null && 'name' in obj && 'message' in obj
+  );
+}
+/**
+ * @internal
+ */
+
+export function isErrnoException(obj: unknown): obj is NodeJS.ErrnoException {
+  return (
+    isErrorLike(obj) &&
+    ('errno' in obj || 'code' in obj || 'path' in obj || 'syscall' in obj)
+  );
+}
diff --git a/remote/test/puppeteer/src/util/assert.ts b/remote/test/puppeteer/src/util/assert.ts
new file mode 100644
index 0000000000..bd8b10e731
--- /dev/null
+++ b/remote/test/puppeteer/src/util/assert.ts
@@ -0,0 +1,31 @@
+/**
+ * Copyright 2020 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * Asserts that the given value is truthy.
+ * @param value - some conditional statement
+ * @param message - the error message to throw if the value is not truthy.
+ *
+ * @internal
+ */
+export const assert: (value: unknown, message?: string) => asserts value = (
+  value,
+  message
+) => {
+  if (!value) {
+    throw new Error(message);
+  }
+};
diff --git a/remote/test/puppeteer/src/util/getPackageDirectory.ts b/remote/test/puppeteer/src/util/getPackageDirectory.ts
new file mode 100644
index 0000000000..d0c5fc4cad
--- /dev/null
+++ b/remote/test/puppeteer/src/util/getPackageDirectory.ts
@@ -0,0 +1,18 @@
+import {existsSync} from 'fs';
+import {dirname, join, parse} from 'path';
+
+/**
+ * @internal
+ */
+export const getPackageDirectory = (from: string): string => {
+  let found = existsSync(join(from, 'package.json'));
+  const root = parse(from).root;
+  while (!found) {
+    if (from === root) {
+      throw new Error('Cannot find package directory');
+    }
+    from = dirname(from);
+    found = existsSync(join(from, 'package.json'));
+  }
+  return from;
+};