nullinjectorerror no provider for store if importing the store module from a child module

Question

In my app.module.ts file I set up a store with:

imports: [
  StoreModule.forRoot(
    { soundtrackState: soundtrackReducer }
  ),
  EffectsModule.forRoot(
    [
      // SoundtrackEffects TODO add some effects
    ]
  ),
  StoreDevtoolsModule.instrument({ maxAge: 15, logOnly: environment.production }),    
  CoreModule,

Now, if I move this code out and into the core.module.ts file then I get the nullinjectorerror no provider for store error.

score 0 · Accepted Answer · answered Jul 21 '20 at 09:24

0

for any other module that root you need to use forFeature and I guess app.module' store should be initialized with code you wrote.

@NgModule({
  declarations: [

  ],
  imports: [
    EffectsModule.forFeature(groupModuleEffects),
    StoreModule.forFeature(GROUPS_FEATURE_NAME, groupModuleReducers),
    StoreDevtoolsModule.instrument({ maxAge: 25, logOnly: environment.production }),
    SharedModule
  ],
  providers: []
})
export class GroupsModule {}

answered Jul 21 '20 at 09:24

Eric Aska

611
5
14

I already tried the `forFeature` as in `StoreModule.forFeature('soundtrackFeature', { soundtrackState: soundtrackReducer }),` in another module. But it gives a `Cannot instantiate cyclic dependency! SoundtrackStore` error. – Stephane Jul 22 '20 at 07:49
@Stephane Seems this cyclic error is not releated to ngrx. https://stackoverflow.com/questions/57206026/angular-8-cannot-instantiate-cyclic-dependency-activatedroute. forFeature should be the way to go as it's said in documentation – Eric Aska Jul 22 '20 at 09:06

score 0 · Answer 2 · answered Jul 22 '20 at 08:58

Some of your services may imported the store via

import { Store } from '@ngrx/store/src/store'

or

import { Store } from '@ngrx/store/store'

Make sure the imports are imported from,

import { Store } from '@ngrx/store'

If everything fine, there may be the problem with store definition. Please share your code of app.module.ts and core.module.ts with stackblitz or other way. So we can resolve the problem.

nullinjectorerror no provider for store if importing the store module from a child module

2 Answers2