chore(cleanup): Remove unused imports

Author: vakrilov

nativescript-angular/http-client/http-client.module.ts

@@ -1,4 +1,4 @@
-import { NgModule, Optional, Inject, Injectable } from "@angular/core";
+import { NgModule } from "@angular/core";
 
 // IMPORTant: Importing "@angular/common/http" for the first time overwrites the
 // global.__extends function.

nativescript-angular/http-client/ns-http-backend.ts

@@ -1,7 +1,6 @@
 import { Injectable } from "@angular/core";
 import {
-    HttpHandler, HttpRequest,
-    HttpEvent, HttpEventType,
+    HttpRequest, HttpEvent,
     XhrFactory, HttpResponse,
     HttpErrorResponse, HttpXhrBackend
 } from "@angular/common/http";

nativescript-angular/package.json

@@ -68,7 +68,7 @@
     "rxjs": "^5.4.2",
     "tns-core-modules": "next",
     "tslint": "^5.5.0",
-    "typescript": "^2.4.1",
+    "typescript": "^2.5.1",
     "zone.js": "^0.8.12"
   }
 }

nativescript-angular/platform-common.ts

@@ -27,8 +27,7 @@ import {
     PAGE_FACTORY,
     PageFactory,
     defaultPageFactoryProvider,
-    setRootPage,
-    PageFactoryOptions
+    setRootPage
 } from "./platform-providers";
 
 import { start, setCssFileName } from "tns-core-modules/application";
@@ -43,6 +42,12 @@ export const onAfterLivesync = new EventEmitter<NgModuleRef<any>>();
 let lastBootstrappedModule: WeakRef<NgModuleRef<any>>;
 type BootstrapperAction = () => Promise<NgModuleRef<any>>;
 
+// Work around a TS bug requiring an import of OpaqueToken without using it
+if ((<any>global).___TS_UNUSED) {
+    (() => {
+        return InjectionToken;
+    })();
+}
 export interface AppOptions {
     bootInExistingPage?: boolean;
     cssFile?: string;