Merge pull request #209 from FrankSalad/v3-ServerValue-Timestamp

Add support for firestack.ServerValue.TIMESTAMP

Author: auser

lib/firestack.js

@@ -64,6 +64,14 @@ export default class Firestack extends Singleton {
     if (instance.options.errorOnMissingPlayServices && !this.googleApiAvailability.isAvailable) {
       throw new Error(`Google Play Services is required to run this application but no valid installation was found (Code ${this.googleApiAvailability.status}).`);
     }
+
+    const database = {
+      ServerValue: {
+        TIMESTAMP: FirestackModule.serverValueTimestamp || { '.sv': 'timestamp' },
+      }
+    };
+    database.__proto__ = instance.database.__proto__;
+    instance.database.__proto__ = database;
   }
 
   _db: ?Object;