Latest builds from Angular2 complain with: NgModule DynamicModule uses HomeComponent via “entryComponents”

Question

Since switching to the latest builds of Angular 2 (i.e. on github, master), I get warnings as follows about all my components:

NgModule DynamicModule

Answer 1

This caught me out too. Significant changes in RC5 to the way that you route and bootstrap with a significant reliance on app.module.ts and @NgModule decorator. The documentation has been updated here: https://angular.io/docs/ts/latest/ and the changelog here: https://github.com/angular/angular/blob/master/CHANGELOG.md

Main changes to the routing file are changes to the import and export statements. A simple example is illustrated below which has two components, AppComponent and HomeComponent, that serves HomeComponent from index.html:

File: app.routing.ts

import { Routes, RouterModule } from '@angular/router';

import { HomeComponent } from './home.component';

const appRoutes: Routes = [
    {
        path: '',
        redirectTo: '/home',
        pathMatch: 'full'
    },
    {
        path: 'home',
        component: HomeComponent
    }
];

export const routing = RouterModule.forRoot(appRoutes);`

You then need to use an NgModule file:

File: app.module.ts

import { NgModule }      from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';

import { AppComponent }  from './app.component';
import { HomeComponent } from './home.component';

import { routing }        from './app.routing';

@NgModule({
    imports:      [ BrowserModule, routing ],
    declarations: [ AppComponent, HomeComponent ],
    bootstrap:    [ AppComponent ]
})
export class AppModule { }

And then you need to pull in AppModule to main.ts and bootstrap using it.

File: main.ts

import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { AppModule } from './app.module';
platformBrowserDynamic().bootstrapModule(AppModule);`

This pattern does not produce the console warning message.