1 files changed, 72 insertions, 0 deletions
diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/reject-lazy-imports-into-globals.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/reject-lazy-imports-into-globals.js
new file mode 100644
index 0000000000..492a1e3bd7
--- /dev/null
+++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/reject-lazy-imports-into-globals.js
@@ -0,0 +1,72 @@
+/**
+ * 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";
+
+const helpers = require("../helpers");
+
+const callExpressionDefinitions = [
+  /^loader\.lazyGetter\((?:globalThis|window), "(\w+)"/,
+  /^loader\.lazyServiceGetter\((?:globalThis|window), "(\w+)"/,
+  /^loader\.lazyRequireGetter\((?:globalThis|window), "(\w+)"/,
+  /^ChromeUtils\.defineLazyGetter\((?:globalThis|window), "(\w+)"/,
+  /^ChromeUtils\.defineModuleGetter\((?:globalThis|window), "(\w+)"/,
+  /^XPCOMUtils\.defineLazyPreferenceGetter\((?:globalThis|window), "(\w+)"/,
+  /^XPCOMUtils\.defineLazyScriptGetter\((?:globalThis|window), "(\w+)"/,
+  /^XPCOMUtils\.defineLazyServiceGetter\((?:globalThis|window), "(\w+)"/,
+  /^XPCOMUtils\.defineConstant\((?:globalThis|window), "(\w+)"/,
+  /^DevToolsUtils\.defineLazyGetter\((?:globalThis|window), "(\w+)"/,
+  /^Object\.defineProperty\((?:globalThis|window), "(\w+)"/,
+  /^Reflect\.defineProperty\((?:globalThis|window), "(\w+)"/,
+  /^this\.__defineGetter__\("(\w+)"/,
+];
+
+const callExpressionMultiDefinitions = [
+  "XPCOMUtils.defineLazyGlobalGetters(window,",
+  "XPCOMUtils.defineLazyGlobalGetters(globalThis,",
+  "XPCOMUtils.defineLazyModuleGetters(window,",
+  "XPCOMUtils.defineLazyModuleGetters(globalThis,",
+  "XPCOMUtils.defineLazyServiceGetters(window,",
+  "XPCOMUtils.defineLazyServiceGetters(globalThis,",
+  "ChromeUtils.defineESModuleGetters(window,",
+  "ChromeUtils.defineESModuleGetters(globalThis,",
+  "loader.lazyRequireGetter(window,",
+  "loader.lazyRequireGetter(globalThis,",
+];
+
+module.exports = {
+  meta: {
+    docs: {
+      url: "https://firefox-source-docs.mozilla.org/code-quality/lint/linters/eslint-plugin-mozilla/rules/reject-lazy-imports-into-globals.html",
+    },
+    messages: {
+      rejectLazyImportsIntoGlobals:
+        "Non-system modules should not import into globalThis nor window. Prefer a lazy object holder",
+    },
+    schema: [],
+    type: "suggestion",
+  },
+
+  create(context) {
+    return {
+      CallExpression(node) {
+        let source;
+        try {
+          source = helpers.getASTSource(node);
+        } catch (e) {
+          return;
+        }
+
+        if (
+          callExpressionDefinitions.some(expr => source.match(expr)) ||
+          callExpressionMultiDefinitions.some(expr => source.startsWith(expr))
+        ) {
+          context.report({ node, messageId: "rejectLazyImportsIntoGlobals" });
+        }
+      },
+    };
+  },
+};