手动配置webpack之React
安装
1.安装react转译相关依赖包：
npm安装：
npm install --save-dev babel-core babel-loader babel-preset-es2015 babel-preset-react
(推荐) yarn安装：
yarn add --dev babel-core babel-loader babel-preset-es2015 babel-preset-react
2.webpack相关依赖：
yarn add --dev webpack webpack-cli webpack-dev-server
3.webpack插件：
yarn add --dev html-webpack-plugin clean-webpack-plugin
4.react相关：
yarn add react react-dom
配置
项目结构：
|__src
|____dist
index.html
main.bungle.js (动态生成)
|____
index.js
app.jsx
index.html
webpack.config.js
package.json文件配置：
package.json
{
"name": "0501",
"version": "1.0.0",
"description": "",
"main": "index.js",
"scripts": {
"test": "echo \"Error: no test specified\" && exit 1",
"build": "webpack",
"start": "webpack-dev-server --open"
},
"author": "",
"license": "ISC",
"devDependencies": {
"babel-core": "^6.26.3",
"babel-loader": "^7.1.5",
"babel-preset-es2015": "^6.24.1",
"babel-preset-react": "^6.24.1",
"clean-webpack-plugin": "^0.1.19",
"express": "^4.16.3",
"html-webpack-plugin": "^3.2.0",
"webpack": "^4.16.2",
"webpack-cli": "^3.1.0",
"webpack-dev-middleware": "^3.1.3",
"webpack-dev-server": "^3.1.5"
},
"dependencies": {
"react": "^16.4.1",
"react-dom": "^16.4.1"
}
}
index.html
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Development</title>
</head>
<body>
<div id="root"></div>
</body>
</html>webpack.config.js
const path = require('path')
const HtmlWebpackPlugin = require('html-webpack-plugin') //生成dist/index.html文件的插件，具体见webpack插件
const CleanWebpackPlugin = require('clean-webpack-plugin') //删除dist文件夹 webpack插件
module.exports = {
entry: path.resolve(__dirname, './src/index.js'),
output: {
path: path.resolve(__dirname, './dist'),
filename: '[name].bundle.js',
publicPath: '/'
},
devtool: 'inline-source-map',
mode: 'production',
module: {
rules: [
{
test: /\.js$/,
exclude: /node-modules/,
loader: 'babel-loader',
options: {
presets: ['es2015', 'react']
}
},
{
test: /\.js$/,
exclude: /node-modules/,
loader: 'babel-loader',
options: {
presets: ['es2015', 'react']
}
}
]
},
plugins: [
new CleanWebpackPlugin(['dist']),
new HtmlWebpackPlugin({
template: './index.html', //在生成html时，是基于这个模板生成的
title: 'Development',
hash: true
})
]
}
index.js
import React from 'react';
import ReactDOM from 'react-dom';
import App from './app.jsx'
ReactDOM.render(
<App></App>,
document.getElementById('root')
);app.jsx
import React from 'react'
export default class App extends React.Component {
constructor () {
super()
this.state = {
txt: '11111111'
}
}
render () {
const txt = this.state.txt
return (
<div>
{txt}
</div>
)
}
}描述：
npm run build：生成dist目录和index.html、打包后的js文件
npm run start：开发时用
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