Module with Providers as a package dependency on node_modules

Question

I have a Module with Providers in a package dependency. But when I try to use it in my app.module I get:

Error: No provider for EnvService!

/node_modules/common-components/env.module:

import { NgModule, ModuleWithProviders } from '@angular/core';
import { CommonModule } from '@angular/common';

import { WindowService } from './window.service';
import { EnvService } from './env.service';

export function windowFactory() {
  return window;
}

@NgModule({
  imports: [
    CommonModule
  ]
})
export class EnvModule {
  static forRoot(): ModuleWithProviders {
    return {
      ngModule: EnvModule,
      providers: [
        EnvService,
        { provide: WindowService, useFactory: windowFactory }
      ]
    }
  }
}

app.module.ts

import { EnvModule } from 'common-components';

@NgModule({
  declarations: [
    AppComponent
  ],
  imports: [
    BrowserModule,
    FormsModule,
    ReactiveFormsModule,
    HttpModule,
    EnvModule.forRoot()
  ],
  bootstrap: [ AppComponent ]
})
export class AppModule { }

score 0 · Answer 1 · answered Jul 21 '17 at 19:15

0

Include the EnvService in the providers of the module as well:

import { NgModule, ModuleWithProviders } from '@angular/core';
import { CommonModule } from '@angular/common';

import { WindowService } from './window.service';
import { EnvService } from './env.service';

export function windowFactory() {
  return window;
}

@NgModule({
  imports: [
    CommonModule
  ],
  providers: [
    EnvService
  ]
})
export class EnvModule {
  static forRoot(): ModuleWithProviders {
    return {
      ngModule: EnvModule,
      providers: [
        EnvService,
        { provide: WindowService, useFactory: windowFactory }
      ]
    }
  }
}

answered Jul 21 '17 at 19:15

0mpurdy

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I did your suggestion, but I still get the same error. – Marcio M. Jul 21 '17 at 19:20
can you post the EnvService? Is it decorated with @Injectable()? – 0mpurdy Jul 21 '17 at 19:23
yes, I have it: @Injectable() export class EnvService { } – Marcio M. Jul 21 '17 at 19:24
If I use the env.module inside the `/app` it works, but using as a package.json dependency I get the error. – Marcio M. Jul 21 '17 at 19:26
Are you using from `node_modules/service-package`? – Marcio M. Jul 21 '17 at 19:40
thank you. I solved the problem. In this case, providers of the module is not necessary. – Marcio M. Jul 24 '17 at 16:08

Module with Providers as a package dependency on node_modules

1 Answers1