我是reactjs新手。我读过类似的错误帖子，语法错误：当前未启用对实验性语法“jsx”的支持 ，但无法解决我的问题
当我跑步时npm run dev
我有一个错误
ERROR in ./src/index.js
Module build failed (from ./node_modules/babel-loader/lib/index.js):
SyntaxError: -..../frontend/src/index.js: Support for the experimental syntax 'jsx' isn't currently enabled (40:7):
38 | render() {
39 | return (
> 40 | <ul>
| ^
41 | {this.state.data.map(contact => {
42 | return (
43 | <li key={contact.id}>
Add @babel/preset-react (https://git.io/JfeDR) to the 'presets' section of your Babel config to enable transformation.
If you want to leave it as-is, add @babel/plugin-syntax-jsx (https://git.io/vb4yA) to …