1 files changed, 37 insertions, 0 deletions
diff --git a/tools/eslint/lib/rules/no-path-concat.js b/tools/eslint/lib/rules/no-path-concat.js
new file mode 100644
index 0000000000..b555589157
--- /dev/null
+++ b/tools/eslint/lib/rules/no-path-concat.js
@@ -0,0 +1,37 @@
+/**
+ * @fileoverview Disallow string concatenation when using __dirname and __filename
+ * @author Nicholas C. Zakas
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = function(context) {
+
+    var MATCHER = /^__(?:dir|file)name$/;
+
+    //--------------------------------------------------------------------------
+    // Public
+    //--------------------------------------------------------------------------
+
+    return {
+
+        "BinaryExpression": function(node) {
+
+            var left = node.left,
+                right = node.right;
+
+            if (node.operator === "+" &&
+                    ((left.type === "Identifier" && MATCHER.test(left.name)) ||
+                    (right.type === "Identifier" && MATCHER.test(right.name)))
+            ) {
+
+                context.report(node, "Use path.join() or path.resolve() instead of + to create paths.");
+            }
+        }
+
+    };
+
+};