fix for #529

jsconfig.json

@@ -0,0 +1,9 @@
+{
+    "compilerOptions": {
+        "allowJs": true,
+        "allowSyntheticDefaultImports": true
+    },
+    "exclude": [
+        "node_modules"
+    ]
+}

lib/firebase-app.js

@@ -158,7 +158,7 @@ export default class FirebaseApp {
       }
 
       if (!this._namespaces[_name]) {
-        this._namespaces[_name] = new InstanceClass(this);
+        this._namespaces[_name] = new InstanceClass(this, this._options);
       }
 
       return this._namespaces[_name];