Jsx

依赖

需要安装 @babel/preset-react @babel/preset-env @babel/core babel-loader core-js@3

项目配置

webpack

module:{
    rules:[
      {
        test: /\.jsx?$/,
        use: ['babel-loader']
     }
  ]
}

babel.config.js

module.exports = {
  presets: [ 
    ['@babel/preset-env', {
      useBuiltIns: 'usage',
      corejs: 3
    }],['@babel/preset-react'],
  ],
  plugins: [
    ['react-refresh/babel']
  ]
}

.browserslistrc

> 1% 
last 2 version
not dead