Adding upstream version 115.7.0esr.upstream/115.7.0esr

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

1 files changed, 1066 insertions, 0 deletions

diff --git a/remote/webdriver-bidi/RemoteValue.sys.mjs b/remote/webdriver-bidi/RemoteValue.sys.mjs
new file mode 100644
index 0000000000..933b457ca1
--- /dev/null
+++ b/remote/webdriver-bidi/RemoteValue.sys.mjs
@@ -0,0 +1,1066 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+import { XPCOMUtils } from "resource://gre/modules/XPCOMUtils.sys.mjs";
+
+const lazy = {};
+
+ChromeUtils.defineESModuleGetters(lazy, {
+  assert: "chrome://remote/content/shared/webdriver/Assert.sys.mjs",
+  error: "chrome://remote/content/shared/webdriver/Errors.sys.mjs",
+  generateUUID: "chrome://remote/content/shared/UUID.sys.mjs",
+  Log: "chrome://remote/content/shared/Log.sys.mjs",
+});
+
+XPCOMUtils.defineLazyGetter(lazy, "logger", () =>
+  lazy.Log.get(lazy.Log.TYPES.WEBDRIVER_BIDI)
+);
+
+/**
+ * @typedef {object} IncludeShadowTreeMode
+ */
+
+/**
+ * Enum of include shadow tree modes supported by the serialization.
+ *
+ * @readonly
+ * @enum {IncludeShadowTreeMode}
+ */
+export const IncludeShadowTreeMode = {
+  All: "all",
+  None: "none",
+  Open: "open",
+};
+
+/**
+ * @typedef {object} OwnershipModel
+ */
+
+/**
+ * Enum of ownership models supported by the serialization.
+ *
+ * @readonly
+ * @enum {OwnershipModel}
+ */
+export const OwnershipModel = {
+  None: "none",
+  Root: "root",
+};
+
+/**
+ * An object which holds the information of how
+ * ECMAScript objects should be serialized.
+ *
+ * @typedef {object} SerializationOptions
+ *
+ * @property {number} [maxDomDepth=0]
+ *     Depth of a serialization of DOM Nodes. Defaults to 0.
+ * @property {number} [maxObjectDepth=null]
+ *     Depth of a serialization of objects. Defaults to null.
+ * @property {IncludeShadowTreeMode} [includeShadowTree=IncludeShadowTreeMode.None]
+ *     Mode of a serialization of shadow dom. Defaults to "none".
+ */
+
+const TYPED_ARRAY_CLASSES = [
+  "Uint8Array",
+  "Uint8ClampedArray",
+  "Uint16Array",
+  "Uint32Array",
+  "Int8Array",
+  "Int16Array",
+  "Int32Array",
+  "Float32Array",
+  "Float64Array",
+  "BigInt64Array",
+  "BigUint64Array",
+];
+
+/**
+ * Build the serialized RemoteValue.
+ *
+ * @returns {object}
+ *     An object with a mandatory `type` property, and optional `handle`,
+ *     depending on the OwnershipModel, used for the serialization and
+ *     on the value's type.
+ */
+function buildSerialized(type, handle = null) {
+  const serialized = { type };
+
+  if (handle !== null) {
+    serialized.handle = handle;
+  }
+
+  return serialized;
+}
+
+/**
+ * Helper to validate if a date string follows Date Time String format.
+ *
+ * @see https://tc39.es/ecma262/#sec-date-time-string-format
+ *
+ * @param {string} dateString
+ *     String which needs to be validated.
+ *
+ * @throws {InvalidArgumentError}
+ *     If <var>dateString</var> doesn't follow the format.
+ */
+function checkDateTimeString(dateString) {
+  // Check if a date string follows a simplification of
+  // the ISO 8601 calendar date extended format.
+  const expandedYear = "[+-]\\d{6}";
+  const year = "\\d{4}";
+  const YYYY = `${expandedYear}|${year}`;
+  const MM = "\\d{2}";
+  const DD = "\\d{2}";
+  const date = `${YYYY}(?:-${MM})?(?:-${DD})?`;
+  const HH_mm = "\\d{2}:\\d{2}";
+  const SS = "\\d{2}";
+  const sss = "\\d{3}";
+  const TZ = `Z|[+-]${HH_mm}`;
+  const time = `T${HH_mm}(?::${SS}(?:\\.${sss})?(?:${TZ})?)?`;
+  const iso8601Format = new RegExp(`^${date}(?:${time})?$`);
+
+  // Check also if a date string is a valid date.
+  if (Number.isNaN(Date.parse(dateString)) || !iso8601Format.test(dateString)) {
+    throw new lazy.error.InvalidArgumentError(
+      `Expected "value" for Date to be a Date Time string, got ${dateString}`
+    );
+  }
+}
+
+/**
+ * Helper to deserialize value list.
+ *
+ * @see https://w3c.github.io/webdriver-bidi/#deserialize-value-list
+ *
+ * @param {Realm} realm
+ *     The Realm in which the value is deserialized.
+ * @param {Array} serializedValueList
+ *     List of serialized values.
+ * @param {object} options
+ * @param {NodeCache} options.nodeCache
+ *     The cache containing DOM node references.
+ *
+ * @returns {Array} List of deserialized values.
+ *
+ * @throws {InvalidArgumentError}
+ *     If <var>serializedValueList</var> is not an array.
+ */
+function deserializeValueList(realm, serializedValueList, options = {}) {
+  lazy.assert.array(
+    serializedValueList,
+    `Expected "serializedValueList" to be an array, got ${serializedValueList}`
+  );
+
+  const deserializedValues = [];
+
+  for (const item of serializedValueList) {
+    deserializedValues.push(deserialize(realm, item, options));
+  }
+
+  return deserializedValues;
+}
+
+/**
+ * Helper to deserialize key-value list.
+ *
+ * @see https://w3c.github.io/webdriver-bidi/#deserialize-key-value-list
+ *
+ * @param {Realm} realm
+ *     The Realm in which the value is deserialized.
+ * @param {Array} serializedKeyValueList
+ *     List of serialized key-value.
+ * @param {object} options
+ * @param {NodeCache} options.nodeCache
+ *     The cache containing DOM node references.
+ *
+ * @returns {Array} List of deserialized key-value.
+ *
+ * @throws {InvalidArgumentError}
+ *     If <var>serializedKeyValueList</var> is not an array or
+ *     not an array of key-value arrays.
+ */
+function deserializeKeyValueList(realm, serializedKeyValueList, options = {}) {
+  lazy.assert.array(
+    serializedKeyValueList,
+    `Expected "serializedKeyValueList" to be an array, got ${serializedKeyValueList}`
+  );
+
+  const deserializedKeyValueList = [];
+
+  for (const serializedKeyValue of serializedKeyValueList) {
+    if (!Array.isArray(serializedKeyValue) || serializedKeyValue.length != 2) {
+      throw new lazy.error.InvalidArgumentError(
+        `Expected key-value pair to be an array with 2 elements, got ${serializedKeyValue}`
+      );
+    }
+    const [serializedKey, serializedValue] = serializedKeyValue;
+    const deserializedKey =
+      typeof serializedKey == "string"
+        ? serializedKey
+        : deserialize(realm, serializedKey, options);
+    const deserializedValue = deserialize(realm, serializedValue, options);
+
+    deserializedKeyValueList.push([deserializedKey, deserializedValue]);
+  }
+
+  return deserializedKeyValueList;
+}
+
+/**
+ * Deserialize a Node as referenced by the shared unique reference.
+ *
+ * This unique reference can be shared by WebDriver clients with the WebDriver
+ * classic implementation (Marionette) if the reference is for an Element or
+ * ShadowRoot.
+ *
+ * @param {string} sharedRef
+ *     Shared unique reference of the Node.
+ * @param {Realm} realm
+ *     The Realm in which the value is deserialized.
+ * @param {object} options
+ * @param {NodeCache} options.nodeCache
+ *     The cache containing DOM node references.
+ *
+ * @returns {Node} The deserialized DOM node.
+ */
+function deserializeSharedReference(sharedRef, realm, options = {}) {
+  const { nodeCache } = options;
+
+  const browsingContext = realm.browsingContext;
+  if (!browsingContext) {
+    throw new lazy.error.NoSuchNodeError("Realm isn't a Window global");
+  }
+
+  const node = nodeCache.getNode(browsingContext, sharedRef);
+
+  if (node === null) {
+    throw new lazy.error.NoSuchNodeError(
+      `The node with the reference ${sharedRef} is not known`
+    );
+  }
+
+  // Bug 1819902: Instead of a browsing context check compare the origin
+  const isSameBrowsingContext = sharedRef => {
+    const nodeDetails = nodeCache.getReferenceDetails(sharedRef);
+
+    if (nodeDetails.isTopBrowsingContext && browsingContext.parent === null) {
+      // As long as Navigables are not available any cross-group navigation will
+      // cause a swap of the current top-level browsing context. The only unique
+      // identifier in such a case is the browser id the top-level browsing
+      // context actually lives in.
+      return nodeDetails.browserId === browsingContext.browserId;
+    }
+
+    return nodeDetails.browsingContextId === browsingContext.id;
+  };
+
+  if (!isSameBrowsingContext(sharedRef)) {
+    return null;
+  }
+
+  return node;
+}
+
+/**
+ * Deserialize a local value.
+ *
+ * @see https://w3c.github.io/webdriver-bidi/#deserialize-local-value
+ *
+ * @param {Realm} realm
+ *     The Realm in which the value is deserialized.
+ * @param {object} serializedValue
+ *     Value of any type to be deserialized.
+ * @param {object} options
+ * @param {NodeCache} options.nodeCache
+ *     The cache containing DOM node references.
+ * @param {Function} options.emitScriptMessage
+ *     The function to emit "script.message" event.
+ *
+ * @returns {object} Deserialized representation of the value.
+ */
+export function deserialize(realm, serializedValue, options = {}) {
+  const { handle, sharedId, type, value } = serializedValue;
+
+  // With a shared id present deserialize as node reference.
+  if (sharedId !== undefined) {
+    lazy.assert.string(
+      sharedId,
+      `Expected "sharedId" to be a string, got ${sharedId}`
+    );
+
+    return deserializeSharedReference(sharedId, realm, options);
+  }
+
+  // With a handle present deserialize as remote reference.
+  if (handle !== undefined) {
+    lazy.assert.string(
+      handle,
+      `Expected "handle" to be a string, got ${handle}`
+    );
+
+    const object = realm.getObjectForHandle(handle);
+    if (!object) {
+      throw new lazy.error.NoSuchHandleError(
+        `Unable to find an object reference for "handle" ${handle}`
+      );
+    }
+
+    return object;
+  }
+
+  lazy.assert.string(type, `Expected "type" to be a string, got ${type}`);
+
+  // Primitive protocol values
+  switch (type) {
+    case "undefined":
+      return undefined;
+    case "null":
+      return null;
+    case "string":
+      lazy.assert.string(
+        value,
+        `Expected "value" to be a string, got ${value}`
+      );
+      return value;
+    case "number":
+      // If value is already a number return its value.
+      if (typeof value === "number") {
+        return value;
+      }
+
+      // Otherwise it has to be one of the special strings
+      lazy.assert.in(
+        value,
+        ["NaN", "-0", "Infinity", "-Infinity"],
+        `Expected "value" to be one of "NaN", "-0", "Infinity", "-Infinity", got ${value}`
+      );
+      return Number(value);
+    case "boolean":
+      lazy.assert.boolean(
+        value,
+        `Expected "value" to be a boolean, got ${value}`
+      );
+      return value;
+    case "bigint":
+      lazy.assert.string(
+        value,
+        `Expected "value" to be a string, got ${value}`
+      );
+      try {
+        return BigInt(value);
+      } catch (e) {
+        throw new lazy.error.InvalidArgumentError(
+          `Failed to deserialize value as BigInt: ${value}`
+        );
+      }
+
+    // Script channel
+    case "channel": {
+      const channel = message =>
+        options.emitScriptMessage(realm, value, message);
+      return realm.cloneIntoRealm(channel);
+    }
+
+    // Non-primitive protocol values
+    case "array":
+      const array = realm.cloneIntoRealm([]);
+      deserializeValueList(realm, value, options).forEach(v => array.push(v));
+      return array;
+    case "date":
+      // We want to support only Date Time String format,
+      // check if the value follows it.
+      checkDateTimeString(value);
+
+      return realm.cloneIntoRealm(new Date(value));
+    case "map":
+      const map = realm.cloneIntoRealm(new Map());
+      deserializeKeyValueList(realm, value, options).forEach(([k, v]) =>
+        map.set(k, v)
+      );
+
+      return map;
+    case "object":
+      const object = realm.cloneIntoRealm({});
+      deserializeKeyValueList(realm, value, options).forEach(
+        ([k, v]) => (object[k] = v)
+      );
+      return object;
+    case "regexp":
+      lazy.assert.object(
+        value,
+        `Expected "value" for RegExp to be an object, got ${value}`
+      );
+      const { pattern, flags } = value;
+      lazy.assert.string(
+        pattern,
+        `Expected "pattern" for RegExp to be a string, got ${pattern}`
+      );
+      if (flags !== undefined) {
+        lazy.assert.string(
+          flags,
+          `Expected "flags" for RegExp to be a string, got ${flags}`
+        );
+      }
+      try {
+        return realm.cloneIntoRealm(new RegExp(pattern, flags));
+      } catch (e) {
+        throw new lazy.error.InvalidArgumentError(
+          `Failed to deserialize value as RegExp: ${value}`
+        );
+      }
+    case "set":
+      const set = realm.cloneIntoRealm(new Set());
+      deserializeValueList(realm, value, options).forEach(v => set.add(v));
+      return set;
+  }
+
+  lazy.logger.warn(`Unsupported type for local value ${type}`);
+  return undefined;
+}
+
+/**
+ * Helper to retrieve the handle id for a given object, for the provided realm
+ * and ownership type.
+ *
+ * See https://w3c.github.io/webdriver-bidi/#handle-for-an-object
+ *
+ * @param {Realm} realm
+ *     The Realm from which comes the value being serialized.
+ * @param {OwnershipModel} ownershipType
+ *     The ownership model to use for this serialization.
+ * @param {object} object
+ *     The object being serialized.
+ *
+ * @returns {string} The unique handle id for the object. Will be null if the
+ *     Ownership type is "none".
+ */
+function getHandleForObject(realm, ownershipType, object) {
+  if (ownershipType === OwnershipModel.None) {
+    return null;
+  }
+  return realm.getHandleForObject(object);
+}
+
+/**
+ * Gets or creates a new shared unique reference for the DOM node.
+ *
+ * This unique reference can be shared by WebDriver clients with the WebDriver
+ * classic implementation (Marionette) if the reference is for an Element or
+ * ShadowRoot.
+ *
+ * @param {Node} node
+ *    Node to create the unique reference for.
+ * @param {Realm} realm
+ *     The Realm in which the value is serialized.
+ * @param {object} options
+ * @param {NodeCache} options.nodeCache
+ *     The cache containing DOM node references.
+ *
+ * @returns {string}
+ *    Shared unique reference for the Node.
+ */
+function getSharedIdForNode(node, realm, options = {}) {
+  const { nodeCache } = options;
+
+  if (!Node.isInstance(node)) {
+    return null;
+  }
+
+  const browsingContext = realm.browsingContext;
+  if (!browsingContext) {
+    return null;
+  }
+
+  const unwrapped = Cu.unwaiveXrays(node);
+  return nodeCache.getOrCreateNodeReference(unwrapped);
+}
+
+/**
+ * Determines if <var>node</var> is shadow root.
+ *
+ * @param {Node} node
+ *    Node to check.
+ *
+ * @returns {boolean}
+ *    True if <var>node</var> is shadow root, false otherwise.
+ */
+function isShadowRoot(node) {
+  const DOCUMENT_FRAGMENT_NODE = 11;
+  return (
+    node &&
+    node.nodeType === DOCUMENT_FRAGMENT_NODE &&
+    node.containingShadowRoot == node
+  );
+}
+
+/**
+ * Helper to serialize an Array-like object.
+ *
+ * @see https://w3c.github.io/webdriver-bidi/#serialize-an-array-like
+ *
+ * @param {string} production
+ *     Type of object
+ * @param {string} handleId
+ *     The unique id of the <var>value</var>.
+ * @param {boolean} knownObject
+ *     Indicates if the <var>value</var> has already been serialized.
+ * @param {object} value
+ *     The Array-like object to serialize.
+ * @param {SerializationOptions} serializationOptions
+ *     Options which define how ECMAScript objects should be serialized.
+ * @param {OwnershipModel} ownershipType
+ *     The ownership model to use for this serialization.
+ * @param {Map} serializationInternalMap
+ *     Map of internal ids.
+ * @param {Realm} realm
+ *     The Realm from which comes the value being serialized.
+ * @param {object} options
+ * @param {NodeCache} options.nodeCache
+ *     The cache containing DOM node references.
+ *
+ * @returns {object} Object for serialized values.
+ */
+function serializeArrayLike(
+  production,
+  handleId,
+  knownObject,
+  value,
+  serializationOptions,
+  ownershipType,
+  serializationInternalMap,
+  realm,
+  options
+) {
+  const serialized = buildSerialized(production, handleId);
+  setInternalIdsIfNeeded(serializationInternalMap, serialized, value);
+
+  if (!knownObject && serializationOptions.maxObjectDepth !== 0) {
+    serialized.value = serializeList(
+      value,
+      serializationOptions,
+      ownershipType,
+      serializationInternalMap,
+      realm,
+      options
+    );
+  }
+
+  return serialized;
+}
+
+/**
+ * Helper to serialize as a list.
+ *
+ * @see https://w3c.github.io/webdriver-bidi/#serialize-as-a-list
+ *
+ * @param {Iterable} iterable
+ *     List of values to be serialized.
+ * @param {SerializationOptions} serializationOptions
+ *     Options which define how ECMAScript objects should be serialized.
+ * @param {OwnershipModel} ownershipType
+ *     The ownership model to use for this serialization.
+ * @param {Map} serializationInternalMap
+ *     Map of internal ids.
+ * @param {Realm} realm
+ *     The Realm from which comes the value being serialized.
+ * @param {object} options
+ * @param {NodeCache} options.nodeCache
+ *     The cache containing DOM node references.
+ *
+ * @returns {Array} List of serialized values.
+ */
+function serializeList(
+  iterable,
+  serializationOptions,
+  ownershipType,
+  serializationInternalMap,
+  realm,
+  options
+) {
+  const { maxObjectDepth } = serializationOptions;
+  const serialized = [];
+  const childSerializationOptions = {
+    ...serializationOptions,
+  };
+  if (maxObjectDepth !== null) {
+    childSerializationOptions.maxObjectDepth = maxObjectDepth - 1;
+  }
+
+  for (const item of iterable) {
+    serialized.push(
+      serialize(
+        item,
+        childSerializationOptions,
+        ownershipType,
+        serializationInternalMap,
+        realm,
+        options
+      )
+    );
+  }
+
+  return serialized;
+}
+
+/**
+ * Helper to serialize as a mapping.
+ *
+ * @see https://w3c.github.io/webdriver-bidi/#serialize-as-a-mapping
+ *
+ * @param {Iterable} iterable
+ *     List of values to be serialized.
+ * @param {SerializationOptions} serializationOptions
+ *     Options which define how ECMAScript objects should be serialized.
+ * @param {OwnershipModel} ownershipType
+ *     The ownership model to use for this serialization.
+ * @param {Map} serializationInternalMap
+ *     Map of internal ids.
+ * @param {Realm} realm
+ *     The Realm from which comes the value being serialized.
+ * @param {object} options
+ * @param {NodeCache} options.nodeCache
+ *     The cache containing DOM node references.
+ *
+ * @returns {Array} List of serialized values.
+ */
+function serializeMapping(
+  iterable,
+  serializationOptions,
+  ownershipType,
+  serializationInternalMap,
+  realm,
+  options
+) {
+  const { maxObjectDepth } = serializationOptions;
+  const serialized = [];
+  const childSerializationOptions = {
+    ...serializationOptions,
+  };
+  if (maxObjectDepth !== null) {
+    childSerializationOptions.maxObjectDepth = maxObjectDepth - 1;
+  }
+
+  for (const [key, item] of iterable) {
+    const serializedKey =
+      typeof key == "string"
+        ? key
+        : serialize(
+            key,
+            childSerializationOptions,
+            ownershipType,
+            serializationInternalMap,
+            realm,
+            options
+          );
+    const serializedValue = serialize(
+      item,
+      childSerializationOptions,
+      ownershipType,
+      serializationInternalMap,
+      realm,
+      options
+    );
+
+    serialized.push([serializedKey, serializedValue]);
+  }
+
+  return serialized;
+}
+
+/**
+ * Helper to serialize as a Node.
+ *
+ * @param {Node} node
+ *     Node to be serialized.
+ * @param {SerializationOptions} serializationOptions
+ *     Options which define how ECMAScript objects should be serialized.
+ * @param {OwnershipModel} ownershipType
+ *     The ownership model to use for this serialization.
+ * @param {Map} serializationInternalMap
+ *     Map of internal ids.
+ * @param {Realm} realm
+ *     The Realm from which comes the value being serialized.
+ * @param {object} options
+ * @param {NodeCache} options.nodeCache
+ *     The cache containing DOM node references.
+ *
+ * @returns {object} Serialized value.
+ */
+function serializeNode(
+  node,
+  serializationOptions,
+  ownershipType,
+  serializationInternalMap,
+  realm,
+  options
+) {
+  const { includeShadowTree, maxDomDepth } = serializationOptions;
+  const isAttribute = Attr.isInstance(node);
+  const isElement = Element.isInstance(node);
+
+  const serialized = {
+    nodeType: node.nodeType,
+  };
+
+  if (node.nodeValue !== null) {
+    serialized.nodeValue = node.nodeValue;
+  }
+
+  if (isElement || isAttribute) {
+    serialized.localName = node.localName;
+    serialized.namespaceURI = node.namespaceURI;
+  }
+
+  serialized.childNodeCount = node.childNodes.length;
+  if (
+    maxDomDepth !== 0 &&
+    (!isShadowRoot(node) ||
+      (includeShadowTree === IncludeShadowTreeMode.Open &&
+        node.mode === "open") ||
+      includeShadowTree === IncludeShadowTreeMode.All)
+  ) {
+    const children = [];
+    const childSerializationOptions = {
+      ...serializationOptions,
+    };
+    if (maxDomDepth !== null) {
+      childSerializationOptions.maxDomDepth = maxDomDepth - 1;
+    }
+    for (const child of node.childNodes) {
+      children.push(
+        serialize(
+          child,
+          childSerializationOptions,
+          ownershipType,
+          serializationInternalMap,
+          realm,
+          options
+        )
+      );
+    }
+
+    serialized.children = children;
+  }
+
+  if (isElement) {
+    serialized.attributes = [...node.attributes].reduce((map, attr) => {
+      map[attr.name] = attr.value;
+      return map;
+    }, {});
+
+    const shadowRoot = Cu.unwaiveXrays(node).openOrClosedShadowRoot;
+    serialized.shadowRoot = null;
+    if (shadowRoot !== null) {
+      serialized.shadowRoot = serialize(
+        shadowRoot,
+        serializationOptions,
+        ownershipType,
+        serializationInternalMap,
+        realm,
+        options
+      );
+    }
+  }
+
+  if (isShadowRoot(node)) {
+    serialized.mode = node.mode;
+  }
+
+  return serialized;
+}
+
+/**
+ * Serialize a value as a remote value.
+ *
+ * @see https://w3c.github.io/webdriver-bidi/#serialize-as-a-remote-value
+ *
+ * @param {object} value
+ *     Value of any type to be serialized.
+ * @param {SerializationOptions} serializationOptions
+ *     Options which define how ECMAScript objects should be serialized.
+ * @param {OwnershipModel} ownershipType
+ *     The ownership model to use for this serialization.
+ * @param {Map} serializationInternalMap
+ *     Map of internal ids.
+ * @param {Realm} realm
+ *     The Realm from which comes the value being serialized.
+ * @param {object} options
+ * @param {NodeCache} options.nodeCache
+ *     The cache containing DOM node references.
+ *
+ * @returns {object} Serialized representation of the value.
+ */
+export function serialize(
+  value,
+  serializationOptions,
+  ownershipType,
+  serializationInternalMap,
+  realm,
+  options
+) {
+  const { maxObjectDepth } = serializationOptions;
+  const type = typeof value;
+
+  // Primitive protocol values
+  if (type == "undefined") {
+    return { type };
+  } else if (Object.is(value, null)) {
+    return { type: "null" };
+  } else if (Object.is(value, NaN)) {
+    return { type: "number", value: "NaN" };
+  } else if (Object.is(value, -0)) {
+    return { type: "number", value: "-0" };
+  } else if (Object.is(value, Infinity)) {
+    return { type: "number", value: "Infinity" };
+  } else if (Object.is(value, -Infinity)) {
+    return { type: "number", value: "-Infinity" };
+  } else if (type == "bigint") {
+    return { type, value: value.toString() };
+  } else if (["boolean", "number", "string"].includes(type)) {
+    return { type, value };
+  }
+
+  const handleId = getHandleForObject(realm, ownershipType, value);
+  const knownObject = serializationInternalMap.has(value);
+
+  // Set the OwnershipModel to use for all complex object serializations.
+  ownershipType = OwnershipModel.None;
+
+  // Remote values
+
+  // symbols are primitive JS values which can only be serialized
+  // as remote values.
+  if (type == "symbol") {
+    return buildSerialized("symbol", handleId);
+  }
+
+  // All other remote values are non-primitives and their
+  // className can be extracted with ChromeUtils.getClassName
+  const className = ChromeUtils.getClassName(value);
+  if (["Array", "HTMLCollection", "NodeList"].includes(className)) {
+    return serializeArrayLike(
+      className.toLowerCase(),
+      handleId,
+      knownObject,
+      value,
+      serializationOptions,
+      ownershipType,
+      serializationInternalMap,
+      realm,
+      options
+    );
+  } else if (className == "RegExp") {
+    const serialized = buildSerialized("regexp", handleId);
+    serialized.value = { pattern: value.source, flags: value.flags };
+    return serialized;
+  } else if (className == "Date") {
+    const serialized = buildSerialized("date", handleId);
+    serialized.value = value.toISOString();
+    return serialized;
+  } else if (className == "Map") {
+    const serialized = buildSerialized("map", handleId);
+    setInternalIdsIfNeeded(serializationInternalMap, serialized, value);
+
+    if (!knownObject && maxObjectDepth !== 0) {
+      serialized.value = serializeMapping(
+        value.entries(),
+        serializationOptions,
+        ownershipType,
+        serializationInternalMap,
+        realm
+      );
+    }
+    return serialized;
+  } else if (className == "Set") {
+    const serialized = buildSerialized("set", handleId);
+    setInternalIdsIfNeeded(serializationInternalMap, serialized, value);
+
+    if (!knownObject && maxObjectDepth !== 0) {
+      serialized.value = serializeList(
+        value.values(),
+        serializationOptions,
+        ownershipType,
+        serializationInternalMap,
+        realm
+      );
+    }
+    return serialized;
+  } else if (
+    [
+      "ArrayBuffer",
+      "Function",
+      "Promise",
+      "WeakMap",
+      "WeakSet",
+      "Window",
+    ].includes(className)
+  ) {
+    return buildSerialized(className.toLowerCase(), handleId);
+  } else if (lazy.error.isError(value)) {
+    return buildSerialized("error", handleId);
+  } else if (TYPED_ARRAY_CLASSES.includes(className)) {
+    return buildSerialized("typedarray", handleId);
+  } else if (Node.isInstance(value)) {
+    const serialized = buildSerialized("node", handleId);
+
+    // Get or create the shared id for WebDriver classic compat from the node.
+    const sharedId = getSharedIdForNode(value, realm, options);
+    if (sharedId !== null) {
+      serialized.sharedId = sharedId;
+    }
+
+    setInternalIdsIfNeeded(serializationInternalMap, serialized, value);
+
+    if (!knownObject) {
+      serialized.value = serializeNode(
+        value,
+        serializationOptions,
+        ownershipType,
+        serializationInternalMap,
+        realm,
+        options
+      );
+    }
+
+    return serialized;
+  } else if (ChromeUtils.isDOMObject(value)) {
+    const serialized = buildSerialized("object", handleId);
+    return serialized;
+  }
+
+  // Otherwise serialize the JavaScript object as generic object.
+  const serialized = buildSerialized("object", handleId);
+  setInternalIdsIfNeeded(serializationInternalMap, serialized, value);
+
+  if (!knownObject && maxObjectDepth !== 0) {
+    serialized.value = serializeMapping(
+      Object.entries(value),
+      serializationOptions,
+      ownershipType,
+      serializationInternalMap,
+      realm,
+      options
+    );
+  }
+  return serialized;
+}
+
+/**
+ * Set default serialization options.
+ *
+ * @param {SerializationOptions} options
+ *    Options which define how ECMAScript objects should be serialized.
+ * @returns {SerializationOptions}
+ *    Serialiation options with default value added.
+ */
+export function setDefaultSerializationOptions(options = {}) {
+  const serializationOptions = { ...options };
+  if (!("maxDomDepth" in serializationOptions)) {
+    serializationOptions.maxDomDepth = 0;
+  }
+  if (!("maxObjectDepth" in serializationOptions)) {
+    serializationOptions.maxObjectDepth = null;
+  }
+  if (!("includeShadowTree" in serializationOptions)) {
+    serializationOptions.includeShadowTree = IncludeShadowTreeMode.None;
+  }
+
+  return serializationOptions;
+}
+
+/**
+ * Set default values and assert if serialization options have
+ * expected types.
+ *
+ * @param {SerializationOptions} options
+ *    Options which define how ECMAScript objects should be serialized.
+ * @returns {SerializationOptions}
+ *    Serialiation options with default value added.
+ */
+export function setDefaultAndAssertSerializationOptions(options = {}) {
+  lazy.assert.object(options);
+
+  const serializationOptions = setDefaultSerializationOptions(options);
+
+  const { includeShadowTree, maxDomDepth, maxObjectDepth } =
+    serializationOptions;
+
+  if (maxDomDepth !== null) {
+    lazy.assert.positiveNumber(maxDomDepth);
+  }
+  if (maxObjectDepth !== null) {
+    lazy.assert.positiveNumber(maxObjectDepth);
+  }
+  const includeShadowTreeModesValues = Object.values(IncludeShadowTreeMode);
+  lazy.assert.that(
+    includeShadowTree =>
+      includeShadowTreeModesValues.includes(includeShadowTree),
+    `includeShadowTree ${includeShadowTree} doesn't match allowed values "${includeShadowTreeModesValues.join(
+      "/"
+    )}"`
+  )(includeShadowTree);
+
+  return serializationOptions;
+}
+
+/**
+ * Set the internalId property of a provided serialized RemoteValue,
+ * and potentially of a previously created serialized RemoteValue,
+ * corresponding to the same provided object.
+ *
+ * @see https://w3c.github.io/webdriver-bidi/#set-internal-ids-if-needed
+ *
+ * @param {Map} serializationInternalMap
+ *     Map of objects to remote values.
+ * @param {object} remoteValue
+ *     A serialized RemoteValue for the provided object.
+ * @param {object} object
+ *     Object of any type to be serialized.
+ */
+function setInternalIdsIfNeeded(serializationInternalMap, remoteValue, object) {
+  if (!serializationInternalMap.has(object)) {
+    // If the object was not tracked yet in the current serialization, add
+    // a new entry in the serialization internal map. An internal id will only
+    // be generated if the same object is encountered again.
+    serializationInternalMap.set(object, remoteValue);
+  } else {
+    // This is at least the second time this object is encountered, retrieve the
+    // original remote value stored for this object.
+    const previousRemoteValue = serializationInternalMap.get(object);
+
+    if (!previousRemoteValue.internalId) {
+      // If the original remote value has no internal id yet, generate a uuid
+      // and update the internalId of the original remote value with it.
+      previousRemoteValue.internalId = lazy.generateUUID();
+    }
+
+    // Copy the internalId of the original remote value to the new remote value.
+    remoteValue.internalId = previousRemoteValue.internalId;
+  }
+}
+
+/**
+ * Safely stringify a value.
+ *
+ * @param {object} obj
+ *     Value of any type to be stringified.
+ *
+ * @returns {string} String representation of the value.
+ */
+export function stringify(obj) {
+  let text;
+  try {
+    text =
+      obj !== null && typeof obj === "object" ? obj.toString() : String(obj);
+  } catch (e) {
+    // The error-case will also be handled in `finally {}`.
+  } finally {
+    if (typeof text != "string") {
+      text = Object.prototype.toString.apply(obj);
+    }
+  }
+
+  return text;
+}