/////////////////// action

{
  type: 'Type de l'action',
  payload: {
    ...etc.
  }
}

/////////////////// dans le module

import { NgModule } from '@angular/core';

@NgModule({

  ...etc.

  imports: [
    StoreModule.provideStore({ nomReducer: fonctionReducer })

  ...etc

/////////////// dans le service

export class MonService {

  constructor (private store:Store<IAppState>) { }

  getMaList ():Observable<IListe[]> {
    return this.store.select(state => state.liste);
  }
}

////////////// dans les composants

export class AppComponent {

  maListe:Observable<Liste[]>;

  constructor (service:MonService) {
    this.maListe = service.getMaListe();
  }
}

///////////// reducer

export const monReducer:ActionReducer<ITruc> = (state:ITruc = defaultRobots, action:Action):ITruc => {
  switch (action.type) {
    default:
      return state;
  }
};