webpack实现react打包
1、安装配置babel
yarn add babel-loader @babel/core @babel/preset-env
2、webpack.config.js配置module
module: {
rules: [
{
test: /\.js$/,
exclude: /node_modules/,
loader: "babel-loader"
}
]
},
3、安装react及react、react-dom
yarn add react react-dom @babel/preset-react
4、项目根目录下新建.babelrc,里面内容如下
{
"presets": ["@babel/preset-env","@babel/preset-react"]
}
5、在webpack配置的入口文件中写如下代码
import React,{Component} from 'react'
import ReactDom from 'react-dom'
class App extends Component{
render(){
return <div>我是react应用</div>
}
}
ReactDom.render(<App/>,document.querySelector('#root'))
6、webpack要引入HtmlWebpackPlugin,并配置有<div id=root></div>的html文件为模板文件
yarn add html-webpack-plugin
src/public/index.html:
<!DOCTYPE html>
<html >
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
<div ></div>
</body>
</html>
webpack.config.js
const HtmlWebpackPlugin = require('html-webpack-plugin')
module.exports = {
entry: {
main: './src/main.js'
},
module: {
rules: [
{
test: /\.js$/,
exclude: /node_modules/,
loader: "babel-loader"
}
]
},
plugins: [
new HtmlWebpackPlugin({
template: './src/public/index.html'
})
],
output: {
path: path.resolve(__dirname,'dist'),
filename: '[name].js'
}
}
7、webpack-dev-server打开，页面出现我是react应用则打包成功。