“No provider for AuthGuard!” using CanActivate in Angular 2

Question

EDIT : Obviously this is outdated, now you provide your guard at the providers array in an NgModule. Watch other answers or official documentation

Answer 1

The answer is further down in the tutorial. See the file listings in the "Add the LoginComponent" topic under the "Component-less route:..." section in "Milestone 5: Route Guards". It shows AuthGuard and AuthService being imported and added to the providers array in login-routing.module.ts, and then that module being imported into app.module.ts.

login-routing.module.ts

  ...
    import { AuthGuard }            from './auth-guard.service';
    import { AuthService }          from './auth.service';
    ...
    @NgModule({
    ...
      providers: [
        AuthGuard,
        AuthService
      ]
    })
    export class LoginRoutingModule {}

app.module.ts

import { LoginRoutingModule }      from './login-routing.module';

@NgModule({
  imports: [
    ...
    LoginRoutingModule,
    ...    
  ],
  ...
  providers: [
    DialogService
  ],
  ...