Revert "chore(package): bump dependencies and lint rules"

This reverts commit 21ad4734fa.

src/@ionic-native/plugins/fcm/index.ts

@@ -1,8 +1,9 @@
+import { Plugin, IonicNativePlugin, Cordova } from '@ionic-native/core';
 import { Injectable } from '@angular/core';
-import { Cordova, IonicNativePlugin, Plugin } from '@ionic-native/core';
 import { Observable } from 'rxjs/Observable';
 
 export interface NotificationData {
+
   /**
    * Determines whether the notification was pressed or not
    */
@@ -14,6 +15,7 @@ export interface NotificationData {
    */
 
   [name: string]: any;
+
 }
 
 /**
@@ -62,15 +64,14 @@ export interface NotificationData {
 })
 @Injectable()
 export class FCM extends IonicNativePlugin {
+
   /**
    * Get's device's current registration id
    *
    * @returns {Promise<string>} Returns a Promise that resolves with the registration id token
    */
   @Cordova()
-  getToken(): Promise<string> {
-    return;
-  }
+  getToken(): Promise<string> { return; }
 
   /**
    * Event firing on the token refresh
@@ -80,9 +81,7 @@ export class FCM extends IonicNativePlugin {
   @Cordova({
     observable: true
   })
-  onTokenRefresh(): Observable<string> {
-    return;
-  }
+  onTokenRefresh(): Observable<string> { return; }
 
   /**
    * Subscribes you to a [topic](https://firebase.google.com/docs/notifications/android/console-topics)
@@ -92,9 +91,7 @@ export class FCM extends IonicNativePlugin {
    * @returns {Promise<any>} Returns a promise resolving in result of subscribing to a topic
    */
   @Cordova()
-  subscribeToTopic(topic: string): Promise<any> {
-    return;
-  }
+  subscribeToTopic(topic: string): Promise<any> { return; }
 
   /**
    * Unubscribes you from a [topic](https://firebase.google.com/docs/notifications/android/console-topics)
@@ -104,9 +101,7 @@ export class FCM extends IonicNativePlugin {
    * @returns {Promise<any>} Returns a promise resolving in result of unsubscribing from a topic
    */
   @Cordova()
-  unsubscribeFromTopic(topic: string): Promise<any> {
-    return;
-  }
+  unsubscribeFromTopic(topic: string): Promise<any> { return; }
 
   /**
    * Watch for incoming notifications
@@ -118,7 +113,6 @@ export class FCM extends IonicNativePlugin {
     successIndex: 0,
     errorIndex: 2
   })
-  onNotification(): Observable<NotificationData> {
-    return;
-  }
+  onNotification(): Observable<NotificationData> { return; }
+
 }