Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream

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

14 files changed, 1389 insertions, 0 deletions

diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/browser-window.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/browser-window.js
new file mode 100644
index 0000000000..01f7d512b6
--- /dev/null
+++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/browser-window.js
@@ -0,0 +1,119 @@
+/**
+ * @fileoverview Defines the environment when in the browser.xhtml window.
+ *               Imports many globals from various files.
+ *
+ * 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/.
+ */
+
+"use strict";
+
+// -----------------------------------------------------------------------------
+// Rule Definition
+// -----------------------------------------------------------------------------
+
+var fs = require("fs");
+var helpers = require("../helpers");
+var { getScriptGlobals } = require("./utils");
+
+// When updating EXTRA_SCRIPTS or MAPPINGS, be sure to also update the
+// 'support-files' config in `tools/lint/eslint.yml`.
+
+// These are scripts not loaded from browser.xhtml or global-scripts.inc
+// but via other includes.
+const EXTRA_SCRIPTS = [
+  "browser/base/content/nsContextMenu.js",
+  "browser/components/downloads/content/downloads.js",
+  "browser/components/downloads/content/indicator.js",
+  "toolkit/content/customElements.js",
+  "toolkit/content/editMenuOverlay.js",
+];
+
+const extraDefinitions = [
+  // Via Components.utils, defineModuleGetter, defineLazyModuleGetters or
+  // defineLazyScriptGetter (and map to
+  // single) variable.
+  { name: "XPCOMUtils", writable: false },
+  { name: "Task", writable: false },
+  { name: "windowGlobalChild", writable: false },
+  // structuredClone is a new global that would be defined for the `browser`
+  // environment in ESLint, but only Firefox has implemented it currently and so
+  // it isn't in ESLint's globals yet.
+  // https://developer.mozilla.org/docs/Web/API/structuredClone
+  { name: "structuredClone", writable: false },
+];
+
+// Some files in global-scripts.inc need mapping to specific locations.
+const MAPPINGS = {
+  "printUtils.js": "toolkit/components/printing/content/printUtils.js",
+  "panelUI.js": "browser/components/customizableui/content/panelUI.js",
+  "viewSourceUtils.js":
+    "toolkit/components/viewsource/content/viewSourceUtils.js",
+  "browserPlacesViews.js":
+    "browser/components/places/content/browserPlacesViews.js",
+  "places-tree.js": "browser/components/places/content/places-tree.js",
+  "places-menupopup.js":
+    "browser/components/places/content/places-menupopup.js",
+};
+
+const globalScriptsRegExp =
+  /^\s*Services.scriptloader.loadSubScript\(\"(.*?)\", this\);$/;
+
+function getGlobalScriptIncludes(scriptPath) {
+  let fileData;
+  try {
+    fileData = fs.readFileSync(scriptPath, { encoding: "utf8" });
+  } catch (ex) {
+    // The file isn't present, so this isn't an m-c repository.
+    return null;
+  }
+
+  fileData = fileData.split("\n");
+
+  let result = [];
+
+  for (let line of fileData) {
+    let match = line.match(globalScriptsRegExp);
+    if (match) {
+      let sourceFile = match[1]
+        .replace(
+          "chrome://browser/content/search/",
+          "browser/components/search/content/"
+        )
+        .replace(
+          "chrome://browser/content/screenshots/",
+          "browser/components/screenshots/content/"
+        )
+        .replace("chrome://browser/content/", "browser/base/content/")
+        .replace("chrome://global/content/", "toolkit/content/");
+
+      for (let mapping of Object.getOwnPropertyNames(MAPPINGS)) {
+        if (sourceFile.includes(mapping)) {
+          sourceFile = MAPPINGS[mapping];
+        }
+      }
+
+      result.push(sourceFile);
+    }
+  }
+
+  return result;
+}
+
+function getGlobalScripts() {
+  let results = [];
+  for (let scriptPath of helpers.globalScriptPaths) {
+    results = results.concat(getGlobalScriptIncludes(scriptPath));
+  }
+  return results;
+}
+
+module.exports = getScriptGlobals(
+  "browser-window",
+  getGlobalScripts().concat(EXTRA_SCRIPTS),
+  extraDefinitions,
+  {
+    browserjsScripts: getGlobalScripts().concat(EXTRA_SCRIPTS),
+  }
+);
diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/chrome-script.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/chrome-script.js
new file mode 100644
index 0000000000..9b0ae54a2e
--- /dev/null
+++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/chrome-script.js
@@ -0,0 +1,28 @@
+/**
+ * @fileoverview Defines the environment for SpecialPowers chrome script.
+ *
+ * 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/.
+ */
+
+"use strict";
+
+var { globals } = require("./special-powers-sandbox");
+var util = require("util");
+
+module.exports = {
+  globals: util._extend(
+    {
+      // testing/specialpowers/content/SpecialPowersParent.sys.mjs
+
+      // SPLoadChromeScript block
+      createWindowlessBrowser: false,
+      sendAsyncMessage: false,
+      addMessageListener: false,
+      removeMessageListener: false,
+      actorParent: false,
+    },
+    globals
+  ),
+};
diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/chrome-worker.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/chrome-worker.js
new file mode 100644
index 0000000000..db5759b26c
--- /dev/null
+++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/chrome-worker.js
@@ -0,0 +1,25 @@
+/**
+ * @fileoverview Defines the environment for chrome workers. This differs
+ *               from normal workers by the fact that `ctypes` can be accessed
+ *               as well.
+ *
+ * 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/.
+ */
+
+"use strict";
+
+var globals = require("globals");
+var util = require("util");
+
+var workerGlobals = util._extend(
+  {
+    ctypes: false,
+  },
+  globals.worker
+);
+
+module.exports = {
+  globals: workerGlobals,
+};
diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/frame-script.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/frame-script.js
new file mode 100644
index 0000000000..7ac5c941cf
--- /dev/null
+++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/frame-script.js
@@ -0,0 +1,39 @@
+/**
+ * @fileoverview Defines the environment for frame scripts.
+ *
+ * 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/.
+ */
+
+"use strict";
+
+module.exports = {
+  globals: {
+    // dom/chrome-webidl/MessageManager.webidl
+
+    // MessageManagerGlobal
+    dump: false,
+    atob: false,
+    btoa: false,
+
+    // MessageListenerManagerMixin
+    addMessageListener: false,
+    removeMessageListener: false,
+    addWeakMessageListener: false,
+    removeWeakMessageListener: false,
+
+    // MessageSenderMixin
+    sendAsyncMessage: false,
+    processMessageManager: false,
+    remoteType: false,
+
+    // SyncMessageSenderMixin
+    sendSyncMessage: false,
+
+    // ContentFrameMessageManager
+    content: false,
+    docShell: false,
+    tabEventTarget: false,
+  },
+};
diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/jsm.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/jsm.js
new file mode 100644
index 0000000000..1ff73c04d9
--- /dev/null
+++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/jsm.js
@@ -0,0 +1,31 @@
+/**
+ * @fileoverview Defines the environment for jsm files.
+ *
+ * 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/.
+ */
+
+"use strict";
+
+module.exports = {
+  globals: {
+    // These globals are hard-coded and available in .jsm scopes.
+    // https://searchfox.org/mozilla-central/rev/dcb0cfb66e4ed3b9c7fbef1e80572426ff5f3c3a/js/xpconnect/loader/mozJSModuleLoader.cpp#222-223
+    // Although `debug` is allowed for jsm files, this is non-standard and something
+    // we don't want to allow in mjs files. Hence it is not included here.
+    atob: false,
+    btoa: false,
+    dump: false,
+    // The WebAssembly global is available in most (if not all) contexts where
+    // JS can run. It's definitely available in JSMs. So even if this is not
+    // the perfect place to add it, it's not wrong, and we can move it later.
+    WebAssembly: false,
+    // These are hard-coded and available in .jsm scopes.
+    // See BackstagePass::Resolve.
+    fetch: false,
+    crypto: false,
+    indexedDB: false,
+    structuredClone: false,
+  },
+};
diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/privileged.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/privileged.js
new file mode 100644
index 0000000000..13e81f7cef
--- /dev/null
+++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/privileged.js
@@ -0,0 +1,803 @@
+/**
+ * @fileoverview Defines the environment for privileges JS files.
+ *
+ * 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/.
+ */
+
+"use strict";
+
+module.exports = {
+  globals: {
+    // Intl and WebAssembly are available everywhere but are not webIDL definitions.
+    Intl: false,
+    WebAssembly: false,
+    // This list of items is currently obtained manually from the list of
+    // mozilla::dom::constructor::id::ID enumerations in an object directory
+    // generated dom/bindings/RegisterBindings.cpp
+    APZHitResultFlags: false,
+    AbortController: false,
+    AbortSignal: false,
+    AccessibleNode: false,
+    Addon: false,
+    AddonEvent: false,
+    AddonInstall: false,
+    AddonManager: true,
+    AddonManagerPermissions: false,
+    AnalyserNode: false,
+    Animation: false,
+    AnimationEffect: false,
+    AnimationEvent: false,
+    AnimationPlaybackEvent: false,
+    AnimationTimeline: false,
+    AnonymousContent: false,
+    Attr: false,
+    AudioBuffer: false,
+    AudioBufferSourceNode: false,
+    AudioContext: false,
+    AudioDestinationNode: false,
+    AudioListener: false,
+    AudioNode: false,
+    AudioParam: false,
+    AudioParamMap: false,
+    AudioProcessingEvent: false,
+    AudioScheduledSourceNode: false,
+    AudioTrack: false,
+    AudioTrackList: false,
+    AudioWorklet: false,
+    AudioWorkletNode: false,
+    AuthenticatorAssertionResponse: false,
+    AuthenticatorAttestationResponse: false,
+    AuthenticatorResponse: false,
+    BarProp: false,
+    BaseAudioContext: false,
+    BatteryManager: false,
+    BeforeUnloadEvent: false,
+    BiquadFilterNode: false,
+    Blob: false,
+    BlobEvent: false,
+    BoxObject: false,
+    BroadcastChannel: false,
+    BrowsingContext: false,
+    ByteLengthQueuingStrategy: false,
+    CanonicalBrowsingContext: false,
+    CDATASection: false,
+    CSS: false,
+    CSS2Properties: false,
+    CSSAnimation: false,
+    CSSConditionRule: false,
+    CSSCounterStyleRule: false,
+    CSSFontFaceRule: false,
+    CSSFontFeatureValuesRule: false,
+    CSSGroupingRule: false,
+    CSSImportRule: false,
+    CSSKeyframeRule: false,
+    CSSKeyframesRule: false,
+    CSSMediaRule: false,
+    CSSMozDocumentRule: false,
+    CSSNamespaceRule: false,
+    CSSPageRule: false,
+    CSSPseudoElement: false,
+    CSSRule: false,
+    CSSRuleList: false,
+    CSSStyleDeclaration: false,
+    CSSStyleRule: false,
+    CSSStyleSheet: false,
+    CSSSupportsRule: false,
+    CSSTransition: false,
+    Cache: false,
+    CacheStorage: false,
+    CanvasCaptureMediaStream: false,
+    CanvasGradient: false,
+    CanvasPattern: false,
+    CanvasRenderingContext2D: false,
+    CaretPosition: false,
+    CaretStateChangedEvent: false,
+    ChannelMergerNode: false,
+    ChannelSplitterNode: false,
+    ChannelWrapper: false,
+    CharacterData: false,
+    CheckerboardReportService: false,
+    ChildProcessMessageManager: false,
+    ChildSHistory: false,
+    ChromeMessageBroadcaster: false,
+    ChromeMessageSender: false,
+    ChromeNodeList: false,
+    ChromeUtils: false,
+    ChromeWorker: false,
+    Clipboard: false,
+    ClipboardEvent: false,
+    ClonedErrorHolder: false,
+    CloseEvent: false,
+    CommandEvent: false,
+    Comment: false,
+    CompositionEvent: false,
+    ConsoleInstance: false,
+    ConstantSourceNode: false,
+    ContentFrameMessageManager: false,
+    ContentProcessMessageManager: false,
+    ConvolverNode: false,
+    CountQueuingStrategy: false,
+    CreateOfferRequest: false,
+    Credential: false,
+    CredentialsContainer: false,
+    Crypto: false,
+    CryptoKey: false,
+    CustomElementRegistry: false,
+    CustomEvent: false,
+    DOMError: false,
+    DOMException: false,
+    DOMImplementation: false,
+    DOMLocalization: false,
+    DOMMatrix: false,
+    DOMMatrixReadOnly: false,
+    DOMParser: false,
+    DOMPoint: false,
+    DOMPointReadOnly: false,
+    DOMQuad: false,
+    DOMRect: false,
+    DOMRectList: false,
+    DOMRectReadOnly: false,
+    DOMRequest: false,
+    DOMStringList: false,
+    DOMStringMap: false,
+    DOMTokenList: false,
+    DataTransfer: false,
+    DataTransferItem: false,
+    DataTransferItemList: false,
+    DebuggerNotificationObserver: false,
+    DelayNode: false,
+    DeprecationReportBody: false,
+    DeviceLightEvent: false,
+    DeviceMotionEvent: false,
+    DeviceOrientationEvent: false,
+    DeviceProximityEvent: false,
+    Directory: false,
+    Document: false,
+    DocumentFragment: false,
+    DocumentTimeline: false,
+    DocumentType: false,
+    DominatorTree: false,
+    DragEvent: false,
+    DynamicsCompressorNode: false,
+    Element: false,
+    ErrorEvent: false,
+    Event: false,
+    EventSource: false,
+    EventTarget: false,
+    FeaturePolicyViolationReportBody: false,
+    FetchObserver: false,
+    File: false,
+    FileList: false,
+    FileReader: false,
+    FileSystem: false,
+    FileSystemDirectoryEntry: false,
+    FileSystemDirectoryReader: false,
+    FileSystemEntry: false,
+    FileSystemFileEntry: false,
+    Flex: false,
+    FlexItemValues: false,
+    FlexLineValues: false,
+    FluentBundle: false,
+    FluentResource: false,
+    FocusEvent: false,
+    FontFace: false,
+    FontFaceSet: false,
+    FontFaceSetLoadEvent: false,
+    FormData: false,
+    FrameCrashedEvent: false,
+    FrameLoader: false,
+    GainNode: false,
+    Gamepad: false,
+    GamepadAxisMoveEvent: false,
+    GamepadButton: false,
+    GamepadButtonEvent: false,
+    GamepadEvent: false,
+    GamepadHapticActuator: false,
+    GamepadPose: false,
+    GamepadServiceTest: false,
+    Glean: false,
+    GleanPings: false,
+    Grid: false,
+    GridArea: false,
+    GridDimension: false,
+    GridLine: false,
+    GridLines: false,
+    GridTrack: false,
+    GridTracks: false,
+    HTMLAllCollection: false,
+    HTMLAnchorElement: false,
+    HTMLAreaElement: false,
+    HTMLAudioElement: false,
+    Audio: false,
+    HTMLBRElement: false,
+    HTMLBaseElement: false,
+    HTMLBodyElement: false,
+    HTMLButtonElement: false,
+    HTMLCanvasElement: false,
+    HTMLCollection: false,
+    HTMLDListElement: false,
+    HTMLDataElement: false,
+    HTMLDataListElement: false,
+    HTMLDetailsElement: false,
+    HTMLDialogElement: false,
+    HTMLDirectoryElement: false,
+    HTMLDivElement: false,
+    HTMLDocument: false,
+    HTMLElement: false,
+    HTMLEmbedElement: false,
+    HTMLFieldSetElement: false,
+    HTMLFontElement: false,
+    HTMLFormControlsCollection: false,
+    HTMLFormElement: false,
+    HTMLFrameElement: false,
+    HTMLFrameSetElement: false,
+    HTMLHRElement: false,
+    HTMLHeadElement: false,
+    HTMLHeadingElement: false,
+    HTMLHtmlElement: false,
+    HTMLIFrameElement: false,
+    HTMLImageElement: false,
+    Image: false,
+    HTMLInputElement: false,
+    HTMLLIElement: false,
+    HTMLLabelElement: false,
+    HTMLLegendElement: false,
+    HTMLLinkElement: false,
+    HTMLMapElement: false,
+    HTMLMarqueeElement: false,
+    HTMLMediaElement: false,
+    HTMLMenuElement: false,
+    HTMLMenuItemElement: false,
+    HTMLMetaElement: false,
+    HTMLMeterElement: false,
+    HTMLModElement: false,
+    HTMLOListElement: false,
+    HTMLObjectElement: false,
+    HTMLOptGroupElement: false,
+    HTMLOptionElement: false,
+    Option: false,
+    HTMLOptionsCollection: false,
+    HTMLOutputElement: false,
+    HTMLParagraphElement: false,
+    HTMLParamElement: false,
+    HTMLPictureElement: false,
+    HTMLPreElement: false,
+    HTMLProgressElement: false,
+    HTMLQuoteElement: false,
+    HTMLScriptElement: false,
+    HTMLSelectElement: false,
+    HTMLSlotElement: false,
+    HTMLSourceElement: false,
+    HTMLSpanElement: false,
+    HTMLStyleElement: false,
+    HTMLTableCaptionElement: false,
+    HTMLTableCellElement: false,
+    HTMLTableColElement: false,
+    HTMLTableElement: false,
+    HTMLTableRowElement: false,
+    HTMLTableSectionElement: false,
+    HTMLTemplateElement: false,
+    HTMLTextAreaElement: false,
+    HTMLTimeElement: false,
+    HTMLTitleElement: false,
+    HTMLTrackElement: false,
+    HTMLUListElement: false,
+    HTMLUnknownElement: false,
+    HTMLVideoElement: false,
+    HashChangeEvent: false,
+    Headers: false,
+    HeapSnapshot: false,
+    History: false,
+    IDBCursor: false,
+    IDBCursorWithValue: false,
+    IDBDatabase: false,
+    IDBFactory: false,
+    IDBFileHandle: false,
+    IDBFileRequest: false,
+    IDBIndex: false,
+    IDBKeyRange: false,
+    IDBLocaleAwareKeyRange: false,
+    IDBMutableFile: false,
+    IDBObjectStore: false,
+    IDBOpenDBRequest: false,
+    IDBRequest: false,
+    IDBTransaction: false,
+    IDBVersionChangeEvent: false,
+    IIRFilterNode: false,
+    IdleDeadline: false,
+    ImageBitmap: false,
+    ImageBitmapRenderingContext: false,
+    ImageCapture: false,
+    ImageCaptureErrorEvent: false,
+    ImageData: false,
+    ImageDocument: false,
+    InputEvent: false,
+    InspectorFontFace: false,
+    InspectorUtils: false,
+    InstallTriggerImpl: false,
+    IntersectionObserver: false,
+    IntersectionObserverEntry: false,
+    IOUtils: false,
+    JSProcessActorChild: false,
+    JSProcessActorParent: false,
+    JSWindowActorChild: false,
+    JSWindowActorParent: false,
+    KeyEvent: false,
+    KeyboardEvent: false,
+    KeyframeEffect: false,
+    L10nFileSource: false,
+    L10nRegistry: false,
+    Localization: false,
+    Location: false,
+    MIDIAccess: false,
+    MIDIConnectionEvent: false,
+    MIDIInput: false,
+    MIDIInputMap: false,
+    MIDIMessageEvent: false,
+    MIDIOutput: false,
+    MIDIOutputMap: false,
+    MIDIPort: false,
+    MatchGlob: false,
+    MatchPattern: false,
+    MatchPatternSet: false,
+    MediaCapabilities: false,
+    MediaCapabilitiesInfo: false,
+    MediaControlService: false,
+    MediaDeviceInfo: false,
+    MediaDevices: false,
+    MediaElementAudioSourceNode: false,
+    MediaEncryptedEvent: false,
+    MediaError: false,
+    MediaKeyError: false,
+    MediaKeyMessageEvent: false,
+    MediaKeySession: false,
+    MediaKeyStatusMap: false,
+    MediaKeySystemAccess: false,
+    MediaKeys: false,
+    MediaList: false,
+    MediaQueryList: false,
+    MediaQueryListEvent: false,
+    MediaRecorder: false,
+    MediaRecorderErrorEvent: false,
+    MediaSource: false,
+    MediaStream: false,
+    MediaStreamAudioDestinationNode: false,
+    MediaStreamAudioSourceNode: false,
+    MediaStreamEvent: false,
+    MediaStreamTrack: false,
+    MediaStreamTrackEvent: false,
+    MerchantValidationEvent: false,
+    MessageBroadcaster: false,
+    MessageChannel: false,
+    MessageEvent: false,
+    MessageListenerManager: false,
+    MessagePort: false,
+    MessageSender: false,
+    MimeType: false,
+    MimeTypeArray: false,
+    MouseEvent: false,
+    MouseScrollEvent: false,
+    MozCanvasPrintState: false,
+    MozDocumentMatcher: false,
+    MozDocumentObserver: false,
+    MozQueryInterface: false,
+    MozSharedMap: false,
+    MozSharedMapChangeEvent: false,
+    MozStorageAsyncStatementParams: false,
+    MozStorageStatementParams: false,
+    MozStorageStatementRow: false,
+    MozWritableSharedMap: false,
+    MutationEvent: false,
+    MutationObserver: false,
+    MutationRecord: false,
+    NamedNodeMap: false,
+    Navigator: false,
+    NetworkInformation: false,
+    Node: false,
+    NodeFilter: false,
+    NodeIterator: false,
+    NodeList: false,
+    Notification: false,
+    NotifyPaintEvent: false,
+    OfflineAudioCompletionEvent: false,
+    OfflineAudioContext: false,
+    OfflineResourceList: false,
+    OffscreenCanvas: false,
+    OscillatorNode: false,
+    PageTransitionEvent: false,
+    PaintRequest: false,
+    PaintRequestList: false,
+    PannerNode: false,
+    ParentProcessMessageManager: false,
+    Path2D: false,
+    PathUtils: false,
+    PaymentAddress: false,
+    PaymentMethodChangeEvent: false,
+    PaymentRequest: false,
+    PaymentRequestUpdateEvent: false,
+    PaymentResponse: false,
+    PeerConnectionImpl: false,
+    PeerConnectionObserver: false,
+    Performance: false,
+    PerformanceEntry: false,
+    PerformanceEntryEvent: false,
+    PerformanceMark: false,
+    PerformanceMeasure: false,
+    PerformanceNavigation: false,
+    PerformanceNavigationTiming: false,
+    PerformanceObserver: false,
+    PerformanceObserverEntryList: false,
+    PerformanceResourceTiming: false,
+    PerformanceServerTiming: false,
+    PerformanceTiming: false,
+    PeriodicWave: false,
+    PermissionStatus: false,
+    Permissions: false,
+    PlacesBookmark: false,
+    PlacesBookmarkAddition: false,
+    PlacesBookmarkGuid: false,
+    PlacesBookmarkKeyword: false,
+    PlacesBookmarkMoved: false,
+    PlacesBookmarkRemoved: false,
+    PlacesBookmarkTags: false,
+    PlacesBookmarkTime: false,
+    PlacesBookmarkTitle: false,
+    PlacesBookmarkUrl: false,
+    PlacesEvent: false,
+    PlacesHistoryCleared: false,
+    PlacesObservers: false,
+    PlacesPurgeCaches: false,
+    PlacesRanking: false,
+    PlacesVisit: false,
+    PlacesVisitRemoved: false,
+    PlacesVisitTitle: false,
+    PlacesWeakCallbackWrapper: false,
+    Plugin: false,
+    PluginArray: false,
+    PluginCrashedEvent: false,
+    PointerEvent: false,
+    PopStateEvent: false,
+    PopupBlockedEvent: false,
+    PrecompiledScript: false,
+    Presentation: false,
+    PresentationAvailability: false,
+    PresentationConnection: false,
+    PresentationConnectionAvailableEvent: false,
+    PresentationConnectionCloseEvent: false,
+    PresentationConnectionList: false,
+    PresentationReceiver: false,
+    PresentationRequest: false,
+    PrioEncoder: false,
+    ProcessMessageManager: false,
+    ProcessingInstruction: false,
+    ProgressEvent: false,
+    PromiseDebugging: false,
+    PromiseRejectionEvent: false,
+    PublicKeyCredential: false,
+    PushManager: false,
+    PushManagerImpl: false,
+    PushSubscription: false,
+    PushSubscriptionOptions: false,
+    RTCCertificate: false,
+    RTCDTMFSender: false,
+    RTCDTMFToneChangeEvent: false,
+    RTCDataChannel: false,
+    RTCDataChannelEvent: false,
+    RTCIceCandidate: false,
+    RTCPeerConnection: false,
+    RTCPeerConnectionIceEvent: false,
+    RTCPeerConnectionStatic: false,
+    RTCRtpReceiver: false,
+    RTCRtpSender: false,
+    RTCRtpTransceiver: false,
+    RTCSessionDescription: false,
+    RTCStatsReport: false,
+    RTCTrackEvent: false,
+    RadioNodeList: false,
+    Range: false,
+    ReadableStreamBYOBReader: false,
+    ReadableStreamBYOBRequest: false,
+    ReadableByteStreamController: false,
+    ReadableStream: false,
+    ReadableStreamDefaultController: false,
+    ReadableStreamDefaultReader: false,
+    Report: false,
+    ReportBody: false,
+    ReportingObserver: false,
+    Request: false,
+    Response: false,
+    SessionStoreUtils: false,
+    SVGAElement: false,
+    SVGAngle: false,
+    SVGAnimateElement: false,
+    SVGAnimateMotionElement: false,
+    SVGAnimateTransformElement: false,
+    SVGAnimatedAngle: false,
+    SVGAnimatedBoolean: false,
+    SVGAnimatedEnumeration: false,
+    SVGAnimatedInteger: false,
+    SVGAnimatedLength: false,
+    SVGAnimatedLengthList: false,
+    SVGAnimatedNumber: false,
+    SVGAnimatedNumberList: false,
+    SVGAnimatedPreserveAspectRatio: false,
+    SVGAnimatedRect: false,
+    SVGAnimatedString: false,
+    SVGAnimatedTransformList: false,
+    SVGAnimationElement: false,
+    SVGCircleElement: false,
+    SVGClipPathElement: false,
+    SVGComponentTransferFunctionElement: false,
+    SVGDefsElement: false,
+    SVGDescElement: false,
+    SVGElement: false,
+    SVGEllipseElement: false,
+    SVGFEBlendElement: false,
+    SVGFEColorMatrixElement: false,
+    SVGFEComponentTransferElement: false,
+    SVGFECompositeElement: false,
+    SVGFEConvolveMatrixElement: false,
+    SVGFEDiffuseLightingElement: false,
+    SVGFEDisplacementMapElement: false,
+    SVGFEDistantLightElement: false,
+    SVGFEDropShadowElement: false,
+    SVGFEFloodElement: false,
+    SVGFEFuncAElement: false,
+    SVGFEFuncBElement: false,
+    SVGFEFuncGElement: false,
+    SVGFEFuncRElement: false,
+    SVGFEGaussianBlurElement: false,
+    SVGFEImageElement: false,
+    SVGFEMergeElement: false,
+    SVGFEMergeNodeElement: false,
+    SVGFEMorphologyElement: false,
+    SVGFEOffsetElement: false,
+    SVGFEPointLightElement: false,
+    SVGFESpecularLightingElement: false,
+    SVGFESpotLightElement: false,
+    SVGFETileElement: false,
+    SVGFETurbulenceElement: false,
+    SVGFilterElement: false,
+    SVGForeignObjectElement: false,
+    SVGGElement: false,
+    SVGGeometryElement: false,
+    SVGGradientElement: false,
+    SVGGraphicsElement: false,
+    SVGImageElement: false,
+    SVGLength: false,
+    SVGLengthList: false,
+    SVGLineElement: false,
+    SVGLinearGradientElement: false,
+    SVGMPathElement: false,
+    SVGMarkerElement: false,
+    SVGMaskElement: false,
+    SVGMatrix: false,
+    SVGMetadataElement: false,
+    SVGNumber: false,
+    SVGNumberList: false,
+    SVGPathElement: false,
+    SVGPathSegList: false,
+    SVGPatternElement: false,
+    SVGPoint: false,
+    SVGPointList: false,
+    SVGPolygonElement: false,
+    SVGPolylineElement: false,
+    SVGPreserveAspectRatio: false,
+    SVGRadialGradientElement: false,
+    SVGRect: false,
+    SVGRectElement: false,
+    SVGSVGElement: false,
+    SVGScriptElement: false,
+    SVGSetElement: false,
+    SVGStopElement: false,
+    SVGStringList: false,
+    SVGStyleElement: false,
+    SVGSwitchElement: false,
+    SVGSymbolElement: false,
+    SVGTSpanElement: false,
+    SVGTextContentElement: false,
+    SVGTextElement: false,
+    SVGTextPathElement: false,
+    SVGTextPositioningElement: false,
+    SVGTitleElement: false,
+    SVGTransform: false,
+    SVGTransformList: false,
+    SVGUnitTypes: false,
+    SVGUseElement: false,
+    SVGViewElement: false,
+    SVGZoomAndPan: false,
+    Screen: false,
+    ScreenLuminance: false,
+    ScreenOrientation: false,
+    ScriptProcessorNode: false,
+    ScrollAreaEvent: false,
+    ScrollViewChangeEvent: false,
+    SecurityPolicyViolationEvent: false,
+    Selection: false,
+    ServiceWorker: false,
+    ServiceWorkerContainer: false,
+    ServiceWorkerRegistration: false,
+    ShadowRoot: false,
+    SharedWorker: false,
+    SimpleGestureEvent: false,
+    SourceBuffer: false,
+    SourceBufferList: false,
+    SpeechGrammar: false,
+    SpeechGrammarList: false,
+    SpeechRecognition: false,
+    SpeechRecognitionAlternative: false,
+    SpeechRecognitionError: false,
+    SpeechRecognitionEvent: false,
+    SpeechRecognitionResult: false,
+    SpeechRecognitionResultList: false,
+    SpeechSynthesis: false,
+    SpeechSynthesisErrorEvent: false,
+    SpeechSynthesisEvent: false,
+    SpeechSynthesisUtterance: false,
+    SpeechSynthesisVoice: false,
+    StereoPannerNode: false,
+    Storage: false,
+    StorageEvent: false,
+    StorageManager: false,
+    StreamFilter: false,
+    StreamFilterDataEvent: false,
+    StructuredCloneHolder: false,
+    StructuredCloneTester: false,
+    StyleSheet: false,
+    StyleSheetApplicableStateChangeEvent: false,
+    StyleSheetList: false,
+    SubtleCrypto: false,
+    SyncMessageSender: false,
+    TCPServerSocket: false,
+    TCPServerSocketEvent: false,
+    TCPSocket: false,
+    TCPSocketErrorEvent: false,
+    TCPSocketEvent: false,
+    TelemetryStopwatch: false,
+    TestingDeprecatedInterface: false,
+    Text: false,
+    TextClause: false,
+    TextDecoder: false,
+    TextEncoder: false,
+    TextMetrics: false,
+    TextTrack: false,
+    TextTrackCue: false,
+    TextTrackCueList: false,
+    TextTrackList: false,
+    TimeEvent: false,
+    TimeRanges: false,
+    Touch: false,
+    TouchEvent: false,
+    TouchList: false,
+    TrackEvent: false,
+    TransceiverImpl: false,
+    TransformStream: false,
+    TransformStreamDefaultController: false,
+    TransitionEvent: false,
+    TreeColumn: false,
+    TreeColumns: false,
+    TreeContentView: false,
+    TreeWalker: false,
+    U2F: false,
+    UDPMessageEvent: false,
+    UDPSocket: false,
+    UIEvent: false,
+    URL: false,
+    URLSearchParams: false,
+    UserInteraction: false,
+    UserProximityEvent: false,
+    VRDisplay: false,
+    VRDisplayCapabilities: false,
+    VRDisplayEvent: false,
+    VREyeParameters: false,
+    VRFieldOfView: false,
+    VRFrameData: false,
+    VRMockController: false,
+    VRMockDisplay: false,
+    VRPose: false,
+    VRServiceTest: false,
+    VRStageParameters: false,
+    VRSubmitFrameResult: false,
+    VTTCue: false,
+    VTTRegion: false,
+    ValidityState: false,
+    VideoPlaybackQuality: false,
+    VideoTrack: false,
+    VideoTrackList: false,
+    VisualViewport: false,
+    WaveShaperNode: false,
+    WebExtensionContentScript: false,
+    WebExtensionPolicy: false,
+    WebGL2RenderingContext: false,
+    WebGLActiveInfo: false,
+    WebGLBuffer: false,
+    WebGLContextEvent: false,
+    WebGLFramebuffer: false,
+    WebGLProgram: false,
+    WebGLQuery: false,
+    WebGLRenderbuffer: false,
+    WebGLRenderingContext: false,
+    WebGLSampler: false,
+    WebGLShader: false,
+    WebGLShaderPrecisionFormat: false,
+    WebGLSync: false,
+    WebGLTexture: false,
+    WebGLTransformFeedback: false,
+    WebGLUniformLocation: false,
+    WebGLVertexArrayObject: false,
+    WebGPU: false,
+    WebGPUAdapter: false,
+    WebGPUAttachmentState: false,
+    WebGPUBindGroup: false,
+    WebGPUBindGroupLayout: false,
+    WebGPUBindingType: false,
+    WebGPUBlendFactor: false,
+    WebGPUBlendOperation: false,
+    WebGPUBlendState: false,
+    WebGPUBuffer: false,
+    WebGPUBufferUsage: false,
+    WebGPUColorWriteBits: false,
+    WebGPUCommandBuffer: false,
+    WebGPUCommandEncoder: false,
+    WebGPUCompareFunction: false,
+    WebGPUComputePipeline: false,
+    WebGPUDepthStencilState: false,
+    WebGPUDevice: false,
+    WebGPUFence: false,
+    WebGPUFilterMode: false,
+    WebGPUIndexFormat: false,
+    WebGPUInputState: false,
+    WebGPUInputStepMode: false,
+    WebGPULoadOp: false,
+    WebGPULogEntry: false,
+    WebGPUPipelineLayout: false,
+    WebGPUPrimitiveTopology: false,
+    WebGPUQueue: false,
+    WebGPURenderPipeline: false,
+    WebGPUSampler: false,
+    WebGPUShaderModule: false,
+    WebGPUShaderStage: false,
+    WebGPUShaderStageBit: false,
+    WebGPUStencilOperation: false,
+    WebGPUStoreOp: false,
+    WebGPUSwapChain: false,
+    WebGPUTexture: false,
+    WebGPUTextureDimension: false,
+    WebGPUTextureFormat: false,
+    WebGPUTextureUsage: false,
+    WebGPUTextureView: false,
+    WebGPUVertexFormat: false,
+    WebKitCSSMatrix: false,
+    WebSocket: false,
+    WebrtcGlobalInformation: false,
+    WheelEvent: false,
+    Window: false,
+    WindowGlobalChild: false,
+    WindowGlobalParent: false,
+    WindowRoot: false,
+    Worker: false,
+    Worklet: false,
+    WritableStream: false,
+    WritableStreamDefaultController: false,
+    WritableStreamDefaultWriter: false,
+    XMLDocument: false,
+    XMLHttpRequest: false,
+    XMLHttpRequestEventTarget: false,
+    XMLHttpRequestUpload: false,
+    XMLSerializer: false,
+    XPathEvaluator: false,
+    XPathExpression: false,
+    XPathResult: false,
+    XSLTProcessor: false,
+    XULCommandEvent: false,
+    XULElement: false,
+    XULFrameElement: false,
+    XULMenuElement: false,
+    XULPopupElement: false,
+    XULScrollElement: false,
+    XULTextElement: false,
+    console: false,
+  },
+};
diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/process-script.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/process-script.js
new file mode 100644
index 0000000000..f329a6650b
--- /dev/null
+++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/process-script.js
@@ -0,0 +1,38 @@
+/**
+ * @fileoverview Defines the environment for process scripts.
+ *
+ * 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/.
+ */
+
+"use strict";
+
+module.exports = {
+  globals: {
+    // dom/chrome-webidl/MessageManager.webidl
+
+    // MessageManagerGlobal
+    dump: false,
+    atob: false,
+    btoa: false,
+
+    // MessageListenerManagerMixin
+    addMessageListener: false,
+    removeMessageListener: false,
+    addWeakMessageListener: false,
+    removeWeakMessageListener: false,
+
+    // MessageSenderMixin
+    sendAsyncMessage: false,
+    processMessageManager: false,
+    remoteType: false,
+
+    // SyncMessageSenderMixin
+    sendSyncMessage: false,
+
+    // ContentProcessMessageManager
+    initialProcessData: false,
+    sharedData: false,
+  },
+};
diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/remote-page.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/remote-page.js
new file mode 100644
index 0000000000..5b362ea2e0
--- /dev/null
+++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/remote-page.js
@@ -0,0 +1,43 @@
+/**
+ * @fileoverview Defines the environment for remote page.
+ *
+ * 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/.
+ */
+
+"use strict";
+
+module.exports = {
+  globals: {
+    atob: false,
+    btoa: false,
+    RPMAddTRRExcludedDomain: false,
+    RPMGetAppBuildID: false,
+    RPMGetInnerMostURI: false,
+    RPMGetIntPref: false,
+    RPMGetStringPref: false,
+    RPMGetBoolPref: false,
+    RPMSetBoolPref: false,
+    RPMGetFormatURLPref: false,
+    RPMIsTRROnlyFailure: false,
+    RPMIsFirefox: false,
+    RPMIsNativeFallbackFailure: false,
+    RPMIsWindowPrivate: false,
+    RPMSendAsyncMessage: false,
+    RPMSendQuery: false,
+    RPMAddMessageListener: false,
+    RPMRecordTelemetryEvent: false,
+    RPMCheckAlternateHostAvailable: false,
+    RPMAddToHistogram: false,
+    RPMRemoveMessageListener: false,
+    RPMGetHttpResponseHeader: false,
+    RPMTryPingSecureWWWLink: false,
+    RPMOpenSecureWWWLink: false,
+    RPMOpenPreferences: false,
+    RPMGetTRRSkipReason: false,
+    RPMGetTRRDomain: false,
+    RPMIsSiteSpecificTRRError: false,
+    RPMSetTRRDisabledLoadFlags: false,
+  },
+};
diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/simpletest.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/simpletest.js
new file mode 100644
index 0000000000..2f5dd5c33e
--- /dev/null
+++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/simpletest.js
@@ -0,0 +1,35 @@
+/**
+ * @fileoverview Defines the environment for scripts that use the SimpleTest
+ *               mochitest harness. Imports the globals from the relevant files.
+ *
+ * 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/.
+ */
+
+"use strict";
+
+// -----------------------------------------------------------------------------
+// Rule Definition
+// -----------------------------------------------------------------------------
+
+var path = require("path");
+var { getScriptGlobals } = require("./utils");
+
+// When updating this list, be sure to also update the 'support-files' config
+// in `tools/lint/eslint.yml`.
+const simpleTestFiles = [
+  "AccessibilityUtils.js",
+  "ExtensionTestUtils.js",
+  "EventUtils.js",
+  "MockObjects.js",
+  "SimpleTest.js",
+  "WindowSnapshot.js",
+  "paint_listener.js",
+];
+const simpleTestPath = "testing/mochitest/tests/SimpleTest";
+
+module.exports = getScriptGlobals(
+  "simpletest",
+  simpleTestFiles.map(file => path.join(simpleTestPath, file))
+);
diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/sjs.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/sjs.js
new file mode 100644
index 0000000000..995c3173d2
--- /dev/null
+++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/sjs.js
@@ -0,0 +1,30 @@
+/**
+ * @fileoverview Defines the environment for sjs files.
+ *
+ * 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/.
+ */
+
+"use strict";
+
+module.exports = {
+  globals: {
+    // All these variables are hard-coded to be available for sjs scopes only.
+    // https://searchfox.org/mozilla-central/rev/26a1b0fce12e6dd495a954c542bb1e7bd6e0d548/netwerk/test/httpserver/httpd.js#2879
+    atob: false,
+    btoa: false,
+    ChromeUtils: false,
+    dump: false,
+    getState: false,
+    setState: false,
+    getSharedState: false,
+    setSharedState: false,
+    getObjectState: false,
+    setObjectState: false,
+    registerPathHandler: false,
+    Services: false,
+    // importScripts is also available.
+    importScripts: false,
+  },
+};
diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/special-powers-sandbox.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/special-powers-sandbox.js
new file mode 100644
index 0000000000..5a28c91883
--- /dev/null
+++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/special-powers-sandbox.js
@@ -0,0 +1,46 @@
+/**
+ * @fileoverview Defines the environment for SpecialPowers sandbox.
+ *
+ * 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/.
+ */
+
+"use strict";
+
+module.exports = {
+  globals: {
+    // wantComponents defaults to true,
+    Components: false,
+    Ci: false,
+    Cr: false,
+    Cc: false,
+    Cu: false,
+    Services: false,
+
+    // testing/specialpowers/content/SpecialPowersSandbox.sys.mjs
+
+    // SANDBOX_GLOBALS
+    Blob: false,
+    ChromeUtils: false,
+    FileReader: false,
+    TextDecoder: false,
+    TextEncoder: false,
+    URL: false,
+
+    // EXTRA_IMPORTS
+    EventUtils: false,
+
+    // SpecialPowersSandbox constructor
+    assert: false,
+    Assert: false,
+    BrowsingContext: false,
+    InspectorUtils: false,
+    ok: false,
+    is: false,
+    isnot: false,
+    todo: false,
+    todo_is: false,
+    info: false,
+  },
+};
diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/specific.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/specific.js
new file mode 100644
index 0000000000..23ebcb5bb1
--- /dev/null
+++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/specific.js
@@ -0,0 +1,31 @@
+/**
+ * @fileoverview Defines the environment for the Firefox browser. Allows global
+ *               variables which are non-standard and specific to Firefox.
+ *
+ * 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/.
+ */
+
+"use strict";
+
+module.exports = {
+  globals: {
+    Cc: false,
+    ChromeUtils: false,
+    Ci: false,
+    Components: false,
+    Cr: false,
+    Cu: false,
+    Debugger: false,
+    InstallTrigger: false,
+    // https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/InternalError
+    InternalError: true,
+    Services: false,
+    // https://developer.mozilla.org/docs/Web/API/Window/dump
+    dump: true,
+    openDialog: false,
+    // https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/uneval
+    uneval: false,
+  },
+};
diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/utils.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/utils.js
new file mode 100644
index 0000000000..aeda690ba5
--- /dev/null
+++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/utils.js
@@ -0,0 +1,62 @@
+/**
+ * @fileoverview Provides utilities for setting up environments.
+ *
+ * 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/.
+ */
+
+"use strict";
+
+var path = require("path");
+var helpers = require("../helpers");
+var globals = require("../globals");
+
+/**
+ * Obtains the globals for a list of files.
+ *
+ * @param {Array.<String>} files
+ *   The array of files to get globals for. The paths are relative to the topsrcdir.
+ * @returns {Object}
+ *   Returns an object with keys of the global names and values of if they are
+ *   writable or not.
+ */
+function getGlobalsForScripts(environmentName, files, extraDefinitions) {
+  let fileGlobals = extraDefinitions;
+  const root = helpers.rootDir;
+  for (const file of files) {
+    const fileName = path.join(root, file);
+    try {
+      fileGlobals = fileGlobals.concat(globals.getGlobalsForFile(fileName));
+    } catch (e) {
+      console.error(`Could not load globals from file ${fileName}: ${e}`);
+      console.error(
+        `You may need to update the mappings for the ${environmentName} environment`
+      );
+      throw new Error(`Could not load globals from file ${fileName}: ${e}`);
+    }
+  }
+
+  var globalObjects = {};
+  for (let global of fileGlobals) {
+    globalObjects[global.name] = global.writable;
+  }
+  return globalObjects;
+}
+
+module.exports = {
+  getScriptGlobals(
+    environmentName,
+    files,
+    extraDefinitions = [],
+    extraEnv = {}
+  ) {
+    if (helpers.isMozillaCentralBased()) {
+      return {
+        globals: getGlobalsForScripts(environmentName, files, extraDefinitions),
+        ...extraEnv,
+      };
+    }
+    return helpers.getSavedEnvironmentItems(environmentName);
+  },
+};
diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/xpcshell.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/xpcshell.js
new file mode 100644
index 0000000000..408bc2e277
--- /dev/null
+++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/xpcshell.js
@@ -0,0 +1,59 @@
+/**
+ * @fileoverview Defines the environment for xpcshell test files.
+ *
+ * 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/.
+ */
+
+"use strict";
+
+var { getScriptGlobals } = require("./utils");
+
+const extraGlobals = [
+  // Defined in XPCShellImpl.cpp
+  "print",
+  "readline",
+  "load",
+  "quit",
+  "dumpXPC",
+  "dump",
+  "gc",
+  "gczeal",
+  "options",
+  "sendCommand",
+  "atob",
+  "btoa",
+  "setInterruptCallback",
+  "simulateNoScriptActivity",
+  "registerXPCTestComponents",
+
+  // Assert.sys.mjs globals.
+  "setReporter",
+  "report",
+  "ok",
+  "equal",
+  "notEqual",
+  "deepEqual",
+  "notDeepEqual",
+  "strictEqual",
+  "notStrictEqual",
+  "throws",
+  "rejects",
+  "greater",
+  "greaterOrEqual",
+  "less",
+  "lessOrEqual",
+  // TestingFunctions.cpp globals
+  "allocationMarker",
+  "byteSize",
+  "saveStack",
+];
+
+module.exports = getScriptGlobals(
+  "xpcshell",
+  ["testing/xpcshell/head.js"],
+  extraGlobals.map(g => {
+    return { name: g, writable: false };
+  })
+);