diff --git a/node_modules/c9/is-notfound.js b/node_modules/c9/is-notfound.js
new file mode 100644
index 00000000..dcc8edba
--- /dev/null
+++ b/node_modules/c9/is-notfound.js
@@ -0,0 +1,7 @@
+"use strict";
+
+
+module.exports = function isNotFound(err) {
+    if (err && err.code === 404) return true;
+    return false;
+};
\ No newline at end of file