1 files changed, 49 insertions, 0 deletions
diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/no-define-cc-etc.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/no-define-cc-etc.js
new file mode 100644
index 0000000000..0b441e4712
--- /dev/null
+++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/no-define-cc-etc.js
@@ -0,0 +1,49 @@
+/**
+ * @fileoverview Reject defining Cc/Ci/Cr/Cu.
+ *
+ * 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
+// -----------------------------------------------------------------------------
+
+const componentsBlacklist = ["Cc", "Ci", "Cr", "Cu"];
+
+module.exports = function(context) {
+  // ---------------------------------------------------------------------------
+  // Public
+  //  --------------------------------------------------------------------------
+
+  return {
+    VariableDeclarator(node) {
+      if (
+        node.id.type == "Identifier" &&
+        componentsBlacklist.includes(node.id.name)
+      ) {
+        context.report(
+          node,
+          `${node.id.name} is now defined in global scope, a separate definition is no longer necessary.`
+        );
+      }
+
+      if (node.id.type == "ObjectPattern") {
+        for (let property of node.id.properties) {
+          if (
+            property.type == "Property" &&
+            componentsBlacklist.includes(property.value.name)
+          ) {
+            context.report(
+              node,
+              `${property.value.name} is now defined in global scope, a separate definition is no longer necessary.`
+            );
+          }
+        }
+      }
+    },
+  };
+};