關(guān)于Redex官網(wǎng)示例Todo List

    const todos = (state = [], action) => {
      switch (action.type) {
        case 'ADD_TODO':
          return [
            ...state,
            {
              id: action.id,
              text: action.text,
              completed: false
            }
          ]
        case 'TOGGLE_TODO':
          return state.map(todo =>
            (todo.id === action.id) 
              ? {...todo, completed: !todo.completed}//這邊的todo
              : todo
          )
        default:
          return state
      }
    }
    
    export default todos

中的todo不應(yīng)該是Object嗎？為什么還可以用擴(kuò)展運(yùn)算符...