title: How to solveTS6143: '--allowJs' is not set
body: <p>The Error is TS6143: Which gives the following error after I run npm start </p>
  
  <pre><code>src/main.ts
  Module './radio-ng-model-example' was resolved to 'C:/Users/saish/Documents/my-app/quickstart/src/radio-ng-model-example.js', but '--allowJs' is not set.
  </code></pre>
  
  <ul>
  <li>Typescript version is 2.2</li>
  <li>npm version 3.10.9</li>
  <li>node version 7.2.0</li>
  <li>angular cli version 1.0.0-rc.2</li>
  </ul>
  
  <p>main.ts </p>
  
  <pre><code>import {platformBrowserDynamic} from '@angular/platform-browser-dynamic';
  import {BrowserModule} from '@angular/platform-browser';
  import {BrowserAnimationsModule} from '@angular/platform-browser/animations';
  import {NgModule} from '@angular/core';
  import {FormsModule, ReactiveFormsModule} from '@angular/forms';
  import {
    MdAutocompleteModule,
    MdButtonModule,
    MdButtonToggleModule,
    MdCardModule,
    MdCheckboxModule,
    MdChipsModule,
    MdCoreModule,
    MdDatepickerModule,
    MdDialogModule,
    MdExpansionModule,
    MdGridListModule,
    MdIconModule,
    MdInputModule,
    MdListModule,
    MdMenuModule,
    MdNativeDateModule,
    MdPaginatorModule,
    MdProgressBarModule,
    MdProgressSpinnerModule,
    MdRadioModule,
    MdRippleModule,
    MdSelectModule,
    MdSidenavModule,
    MdSliderModule,
    MdSlideToggleModule,
    MdSnackBarModule,
    MdSortModule,
    MdTableModule,
    MdTabsModule,
    MdToolbarModule,
    MdTooltipModule,
  } from '@angular/material';
  import {RadioOverviewExample} from './radio-overview-example';
  import {HttpModule} from '@angular/http';
  import {CdkTableModule} from '@angular/cdk';
  
  @NgModule({
    exports: [
      CdkTableModule,
      MdAutocompleteModule,
      MdButtonModule,
      MdButtonToggleModule,
      MdCardModule,
      MdCheckboxModule,
      MdChipsModule,
      MdCoreModule,
      MdDatepickerModule,
      MdDialogModule,
      MdExpansionModule,
      MdGridListModule,
      MdIconModule,
      MdInputModule,
      MdListModule,
      MdMenuModule,
      MdNativeDateModule,
      MdPaginatorModule,
      MdProgressBarModule,
      MdProgressSpinnerModule,
      MdRadioModule,
      MdRippleModule,
      MdSelectModule,
      MdSidenavModule,
      MdSliderModule,
      MdSlideToggleModule,
      MdSnackBarModule,
      MdSortModule,
      MdTableModule,
      MdTabsModule,
      MdToolbarModule,
      MdTooltipModule,
    ]
  })
  export class PlunkerMaterialModule {}
  
  @NgModule({
  
    imports: [
      BrowserModule,
      BrowserAnimationsModule,
      FormsModule,
      HttpModule,
      PlunkerMaterialModule,
      MdNativeDateModule,
      ReactiveFormsModule,
    ],
  
    declarations: [RadioOverviewExample],
    bootstrap: [RadioOverviewExample],
    providers: []
  })
  export class PlunkerAppModule {}
  
  platformBrowserDynamic().bootstrapModule(PlunkerAppModule);
  </code></pre>