ngrx_user.actions.ts

import { Action } from '@ngrx/store';  
  
export const LOAD_USERS = '[Users] Load Users';  // It's good practice to add namespace for each action module
export const LOAD_USERS_FAIL = '[Users] Load Users Fail';  
export const LOAD_USERS_SUCCESS = '[Users] Load Users Success';  
  
export class LoadUsers implements Action {  
  readonly type = LOAD_USERS;  
}  
  
export class LoadUsersFail implements Action {  
  readonly type = LOAD_USERS_FAIL;  
  
  constructor(public payload: any) {}  
}  
  
export class LoadUsersSuccess implements Action {  
  readonly type = LOAD_USERS_SUCCESS;  
  
  constructor(public payload: any) {}  
}  
  
// Action types  
export type UsersAction = LoadUsers | LoadUsersFail | LoadUsersSuccess;