1 files changed, 18 insertions, 0 deletions
diff --git a/node_modules/es5-ext/object/map-keys.js b/node_modules/es5-ext/object/map-keys.js
new file mode 100644
index 000000000..72dada070
--- /dev/null
+++ b/node_modules/es5-ext/object/map-keys.js
@@ -0,0 +1,18 @@
+"use strict";
+
+var callable = require("./valid-callable")
+  , forEach  = require("./for-each")
+  , call     = Function.prototype.call;
+
+module.exports = function (obj, cb /*, thisArg*/) {
+	var result = {}, thisArg = arguments[2];
+	callable(cb);
+	forEach(
+		obj,
+		function (value, key, targetObj, index) {
+			result[call.call(cb, thisArg, key, value, this, index)] = value;
+		},
+		obj
+	);
+	return result;
+};