npm and error messages

node_modules/es5-ext/string/#/plain-replace.js

@@ -0,0 +1,10 @@
+"use strict";
+
+var indexOf = String.prototype.indexOf, slice = String.prototype.slice;
+
+module.exports = function (search, replace) {
+	var index = indexOf.call(this, search);
+	if (index === -1) return String(this);
+	return slice.call(this, 0, index) + replace +
+		slice.call(this, index + String(search).length);
+};