@angularclass/hmr

---

Angular 2 Hot Module Replacement

Angular2-HMR

npm install @angularclass/hmr @angularclass/hmr-loader

This module requires Angular 2.0.0-rc.5 or higher. Please see repository Angular 2 Seed for a working example.

also download https://github.com/AngularClass/angular2-hmr-loader main.browser.ts

import { removeNgStyles, createNewHosts, bootloader } from '@angularclass/hmr';

@NgModule({
  bootstrap: [ App ],
  declarations: [ App ],
  imports: [
    // Angular 2
    BrowserModule,
    FormsModule,
    HttpModule,
    RouterModule.forRoot([], {
      useHash: true
    }),
    // app
    appModule
    // vendors
  ],
  providers: []
})
class MainModule {
  constructor(public appRef: ApplicationRef) {}
  hmrOnInit(store) {
    if (!store) return;
    console.log('HMR store', store);
    console.log('store.OHHAI:', store.OHHAI)
    // inject AppStore here and update it
    // this.AppStore.update(store)
  }
  hmrOnDestroy(store) {
    var cmpLocation = this.appRef.components.map(cmp => cmp.location.nativeElement);
    // recreate elements
    store.disposeOldHosts = createNewHosts(cmpLocation)
    // inject your AppStore and grab state then set it on store
    // var appState = this.AppStore.get()
    store.OHHAI = 'yolo'
    // Object.assign(store, appState)
    // remove styles
    removeNgStyles();
  }
  hmrAfterDestroy(store) {
    // display new elements
    store.disposeOldHosts()
    delete store.disposeOldHosts;
    // anything you need done the component is removed
  }
}

export function main() {
  return platformBrowserDynamic().bootstrapModule(MainModule);
}

// boot on document ready
bootloader(main);

bootloader is only needed to detech that the dom is ready before bootstraping otherwise bootstrap. This is needed because that dom is already ready during reloading

Important Helpers

• removeNgStyles
• createNewHosts and disposeOldHosts
• bootloader

Production

In production you only need bootloader which just does this

export function bootloader(main) {
  if (document.readyState === 'complete') {
    main()
  } else {
    document.addEventListener('DOMContentLoaded', main);
  }
}

you would bootstrap your app the normal way, in production, afer dom is ready. Also, in production, you should remove the loader

        {
          test: /\.ts$/,
          loaders: [
            'awesome-typescript-loader',
          ].concat(prod ? [] : '@angularclass/hmr-loader')
        },

---

enjoy — AngularClass

##AngularClass

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