1 files changed, 80 insertions, 0 deletions
diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/reject-chromeutils-import.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/reject-chromeutils-import.js
new file mode 100644
index 0000000000..1f746db730
--- /dev/null
+++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/reject-chromeutils-import.js
@@ -0,0 +1,80 @@
+/**
+ * @fileoverview Reject use of Cu.import and ChromeUtils.import
+ *               in favor of ChromeUtils.importESModule.
+ *
+ * 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";
+
+function isIdentifier(node, id) {
+  return node && node.type === "Identifier" && node.name === id;
+}
+
+function isMemberExpression(node, object, member) {
+  return (
+    node.type === "MemberExpression" &&
+    isIdentifier(node.object, object) &&
+    isIdentifier(node.property, member)
+  );
+}
+
+module.exports = {
+  meta: {
+    docs: {
+      url: "https://firefox-source-docs.mozilla.org/code-quality/lint/linters/eslint-plugin-mozilla/rules/reject-chromeutils-import.html",
+    },
+    messages: {
+      useImportESModule:
+        "Please use ChromeUtils.importESModule instead of " +
+        "ChromeUtils.import unless the module is not yet ESMified",
+      useImportESModuleLazy:
+        "Please use ChromeUtils.defineESModuleGetters instead of " +
+        "ChromeUtils.defineModuleGetter " +
+        "unless the module is not yet ESMified",
+    },
+    schema: [],
+    type: "problem",
+  },
+
+  create(context) {
+    return {
+      CallExpression(node) {
+        if (node.callee.type !== "MemberExpression") {
+          return;
+        }
+
+        let { callee } = node;
+
+        if (
+          (isIdentifier(callee.object, "ChromeUtils") ||
+            isMemberExpression(
+              callee.object,
+              "SpecialPowers",
+              "ChromeUtils"
+            )) &&
+          isIdentifier(callee.property, "import")
+        ) {
+          context.report({
+            node,
+            messageId: "useImportESModule",
+          });
+        }
+
+        if (
+          (isMemberExpression(callee.object, "SpecialPowers", "ChromeUtils") &&
+            isIdentifier(callee.property, "defineModuleGetter")) ||
+          isMemberExpression(callee, "ChromeUtils", "defineModuleGetter") ||
+          isMemberExpression(callee, "XPCOMUtils", "defineLazyModuleGetters")
+        ) {
+          context.report({
+            node,
+            messageId: "useImportESModuleLazy",
+          });
+        }
+      },
+    };
+  },
+};