Update index.d.ts

namespace interfaces, export class as default

index.d.ts

@@ -1,15 +1,15 @@
-
 // Type definitions for React Native Firebase  v1.0.0-alpha7
 // Project: https://github.com/invertase/react-native-firebase
+// Definitions by: Tal <https://github.com/taljacobson>
 // TypeScript Version: 2.1
 
-// TODO definitions for storage, database methods, undocumented features
+declare module "react-native-firebase" {
 
-  class FireBase {
-      constructor(config?: configurationOptions)
-      analytics(): Analytics
-      auth(): Auth
-      on(type: string, handler: (msg:any) => void): any
+  export default class FireBase {
+    constructor(config?: RNFirebase.configurationOptions)
+    analytics(): RNFirebase.Analytics
+    auth(): RNFirebase.Auth
+    on(type: string, handler: (msg: any) => void): any
     /** mimics firebase Web SDK */
     database(): any
     /**RNFirebase mimics the Web Firebase SDK Storage, 
@@ -22,7 +22,7 @@
      * As the Firebase Web SDK has limited messaging functionality, 
      * the following methods within react-native-firebase have been created to handle FCM in the React Native environment.
      */
-      messaging(): Messaging
+    messaging(): RNFirebase.Messaging
     /**
      * RNFirebase provides crash reporting for your app out of the box.
      * Please note crashes do not appear in real-time on the console,
@@ -30,9 +30,11 @@
      * If you want to manually report a crash,
      * such as a pre-caught exception this is possible by using the report method.
      */
-      crash(): Crash
+    crash(): RNFirebase.Crash
   }
 
+  namespace RNFirebase {
+
     /**
      * pass custom options by passing an object with configuration options. 
      * The configuration object will be generated first by the native configuration object, if set and then will be overridden if passed in JS. 
@@ -387,4 +389,7 @@
        */
       report(error: Error, maxStackSize: Number): void
     }
+  }
 
+
+}