dpalita

@Injectable()
export class AccountReducer {
  // with real DI inside
  constructor (private usefulService: UsefulService) {}

  createReducer() {
    // handle specific action with the help of your injected service and return new states, this is the pure reducer function
    return (state: AccountState, action: Action) => {
      if(action.type === 'SomethingUseful' /* or better still action instanceof SomethingUsefulAction, but this makes for another post ;-)*/) {
        return {...state, {useful: this.usefulService.something(action.payload)}}

dpalita

export const ACCOUNT_REDUCER_TOKEN = new InjectionToken<ActionReducer<Map<string, Account>>>('Account state reducer')

export function accountReducerFactory(accountReducer: AccountReducer): ActionReducer<Map<string, Account>> {
  // here you create a reducer function with access to other managed services
  return accountReducer.createReducer()
}

@NgModule({
  imports: [
    StoreModule.forFeature('account', ACCOUNT_REDUCER_TOKEN)

dpalita

i18n.ActivityStatus={value, select, other {unknown}\
  COMPLETED {Completed}\
  DUE_TODAY {Due today}\
  OVERDUE {Overdue}\
  PENDING {Pending}\
}

# Usage : {{'i18n.ActivityStatus' | translate:{value: activity.status} }}