有人能告诉我为什么我的React应用程序会出现这个警告吗?
src/reducers/posts.js 第3行第1列:将箭头函数分配给变量,然后作为模块默认值导出
import { FETCH_ALL, CREATE, UPDATE, DELETE } from '../constants/actionTypes';
export default (posts = [], action) => {
switch (action.type) {
case FETCH_ALL:
return action.payload;
case UPDATE:
return posts.map((post) => post._id === action.payload._id ? action.payload : post);
case CREATE:
return [ ...posts, action.payload];
case DELETE:
return posts.filter((post) => post._id !== action.payload);
default:
return posts;
}
}