1 files changed, 55 insertions, 0 deletions
diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/no-aArgs.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/no-aArgs.js
new file mode 100644
index 000000000..267f6836f
--- /dev/null
+++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/no-aArgs.js
@@ -0,0 +1,55 @@
+/**
+ * @fileoverview warns against using hungarian notation in function arguments
+ * (i.e. aArg).
+ *
+ * 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
+// -----------------------------------------------------------------------------
+
+module.exports = function(context) {
+  // ---------------------------------------------------------------------------
+  // Helpers
+  // ---------------------------------------------------------------------------
+
+  function isPrefixed(name) {
+    return name.length >= 2 && /^a[A-Z]/.test(name);
+  }
+
+  function deHungarianize(name) {
+    return name.substring(1, 2).toLowerCase() +
+           name.substring(2, name.length);
+  }
+
+  function checkFunction(node) {
+    for (var i = 0; i < node.params.length; i++) {
+      var param = node.params[i];
+      if (param.name && isPrefixed(param.name)) {
+        var errorObj = {
+          name: param.name,
+          suggestion: deHungarianize(param.name)
+        };
+        context.report(param,
+                       "Parameter '{{name}}' uses Hungarian Notation, " +
+                       "consider using '{{suggestion}}' instead.",
+                       errorObj);
+      }
+    }
+  }
+
+  // ---------------------------------------------------------------------------
+  // Public
+  // ---------------------------------------------------------------------------
+
+  return {
+    "FunctionDeclaration": checkFunction,
+    "ArrowFunctionExpression": checkFunction,
+    "FunctionExpression": checkFunction
+  };
+};