Angular 2 A simple module


A module is a class with the @NgModule decorator. To create a module we add @NgModule passing some parameters:

  • bootstrap: The component that will be the root of your application. This configuration is only present on your root module
  • declarations: Resources the module declares. When you add a new component you have to update the declarations (ng generate component does it automatically)
  • exports: Resources the module exports that can be used in other modules
  • imports: Resources the module uses from other modules (only module classes are accepted)
  • providers: Resources that can be injected (di) in a component

A simple example:

import { AppComponent } from './app.component';
import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
  bootstrap: [AppComponent]
  declarations: [AppComponent],
  exports: [],
  imports: [BrowserModule],
  providers: [],
export class AppModule { }