diff --git a/tests/flow-typed/firebase.js b/tests/flow-typed/firebase.js
new file mode 100644
index 00000000..10b53f5e
--- /dev/null
+++ b/tests/flow-typed/firebase.js
@@ -0,0 +1,5 @@
+/* eslint-disable no-unused-vars */
+import type Firebase from '../../src/types';
+
+declare var global: { firebase: Firebase };
+declare var firebase: Firebase;