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

This reverts commit 21ad4734fa.

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

@@ -1,5 +1,5 @@
 import { Injectable } from '@angular/core';
-import { Cordova, IonicNativePlugin, Plugin } from '@ionic-native/core';
+import { Plugin, Cordova, IonicNativePlugin } from '@ionic-native/core';
 
 export interface ZBarOptions {
   /**
@@ -77,13 +77,13 @@ export interface ZBarOptions {
 })
 @Injectable()
 export class ZBar extends IonicNativePlugin {
+
   /**
    * Open the scanner
    * @param options { ZBarOptions } Scan options
    * @returns {Promise<any>} Returns a Promise that resolves with the scanned string, or rejects with an error.
    */
   @Cordova()
-  scan(options: ZBarOptions): Promise<any> {
-    return;
-  }
+  scan(options: ZBarOptions): Promise<any> { return; }
+
 }