text: /*
  * 包含多个mutations中方法名称的常量
  */
  
  // 定义一些统一的名称，防止混乱
  export const ADD_TODO = 'add_todo';
  export const DELETE_TODO = 'delete_todo';
  export const SELECT_ALL_TODO = 'select_all_todo';
  export const DELETE_FINISHED_TODO = 'delete_finished_todo';
  