fix(plugins): fix rxjs 6 build errors

#2439

src/@ionic-native/plugins/themeable-browser/index.ts

@@ -1,6 +1,11 @@
 import { Injectable } from '@angular/core';
-import { CordovaInstance, InstanceCheck, IonicNativePlugin, Plugin } from '@ionic-native/core';
-import { Observable } from 'rxjs/Observable';
+import {
+  CordovaInstance,
+  InstanceCheck,
+  IonicNativePlugin,
+  Plugin
+} from '@ionic-native/core';
+import { Observable } from 'rxjs';
 
 declare const cordova: any;
 
@@ -71,15 +76,24 @@ export interface ThemeableBrowserOptions {
  * @hidden
  */
 export class ThemeableBrowserObject {
-
   private _objectInstance: any;
 
-  constructor(url: string, target: string, styleOptions: ThemeableBrowserOptions) {
+  constructor(
+    url: string,
+    target: string,
+    styleOptions: ThemeableBrowserOptions
+  ) {
     try {
-      this._objectInstance = cordova.ThemeableBrowser.open(url, target, styleOptions);
+      this._objectInstance = cordova.ThemeableBrowser.open(
+        url,
+        target,
+        styleOptions
+      );
     } catch (e) {
       window.open(url);
-      console.warn('Native: ThemeableBrowser is not installed or you are running on a browser. Falling back to window.open.');
+      console.warn(
+        'Native: ThemeableBrowser is not installed or you are running on a browser. Falling back to window.open.'
+      );
     }
   }
 
@@ -88,22 +102,19 @@ export class ThemeableBrowserObject {
    * if the browser was already visible.
    */
   @CordovaInstance({ sync: true })
-  show(): void {
-  }
+  show(): void {}
 
   /**
    * Closes the browser window.
    */
   @CordovaInstance({ sync: true })
-  close(): void {
-  }
+  close(): void {}
 
   /**
    * Reloads the current page
    */
   @CordovaInstance({ sync: true })
-  reload(): void {
-  }
+  reload(): void {}
 
   /**
    * Injects JavaScript code into the browser window.
@@ -111,7 +122,7 @@ export class ThemeableBrowserObject {
    * @returns {Promise<any>}
    */
   @CordovaInstance()
-  executeScript(script: { file?: string, code?: string }): Promise<any> {
+  executeScript(script: { file?: string; code?: string }): Promise<any> {
     return;
   }
 
@@ -121,7 +132,7 @@ export class ThemeableBrowserObject {
    * @returns {Promise<any>}
    */
   @CordovaInstance()
-  insertCss(css: { file?: string, code?: string }): Promise<any> {
+  insertCss(css: { file?: string; code?: string }): Promise<any> {
     return;
   }
 
@@ -133,12 +144,18 @@ export class ThemeableBrowserObject {
    */
   @InstanceCheck({ observable: true })
   on(event: string): Observable<any> {
-    return new Observable<any>((observer) => {
-      this._objectInstance.addEventListener(event, observer.next.bind(observer));
-      return () => this._objectInstance.removeEventListener(event, observer.next.bind(observer));
+    return new Observable<any>(observer => {
+      this._objectInstance.addEventListener(
+        event,
+        observer.next.bind(observer)
+      );
+      return () =>
+        this._objectInstance.removeEventListener(
+          event,
+          observer.next.bind(observer)
+        );
     });
   }
-
 }
 
 /**
@@ -231,11 +248,20 @@ export class ThemeableBrowserObject {
   plugin: 'cordova-plugin-themeablebrowser',
   pluginRef: 'cordova.ThemeableBrowser',
   repo: 'https://github.com/initialxy/cordova-plugin-themeablebrowser',
-  platforms: ['Amazon Fire OS', 'Android', 'Blackberry 10', 'Browser', 'FirefoxOS', 'iOS', 'Ubuntu', 'Windows', 'Windows Phone']
+  platforms: [
+    'Amazon Fire OS',
+    'Android',
+    'Blackberry 10',
+    'Browser',
+    'FirefoxOS',
+    'iOS',
+    'Ubuntu',
+    'Windows',
+    'Windows Phone'
+  ]
 })
 @Injectable()
 export class ThemeableBrowser extends IonicNativePlugin {
-
   /**
    * Creates a browser instance
    * @param url {string} URL to open
@@ -243,8 +269,11 @@ export class ThemeableBrowser extends IonicNativePlugin {
    * @param styleOptions {ThemeableBrowserOptions} Themeable browser options
    * @returns {ThemeableBrowserObject}
    */
-  create(url: string, target: string, styleOptions: ThemeableBrowserOptions): ThemeableBrowserObject {
+  create(
+    url: string,
+    target: string,
+    styleOptions: ThemeableBrowserOptions
+  ): ThemeableBrowserObject {
     return new ThemeableBrowserObject(url, target, styleOptions);
   }
-
 }