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根据webpack5 搭建react项目。 防止忘记记录一下

package.json

{
  "name": "webpack",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "start": "webpack serve",
    "test": "echo \"Error: no test specified\" && exit 1",
    "build": "webpack"
  },
  "keywords": [],
  "author": "",
  "license": "ISC",
  "devDependencies": {
    "@babel/core": "^7.14.6",
    "@babel/preset-env": "^7.14.5",
    "@babel/preset-react": "^7.14.5",
    "babel-loader": "^8.2.2",
    "clean-webpack-plugin": "^4.0.0-alpha.0",
    "css-loader": "^5.2.6",
    "friendly-errors-webpack-plugin": "^1.7.0",
    "html-webpack-plugin": "^5.3.1",
    "postcss": "^8.3.4",
    "postcss-cssnext": "^3.1.0",
    "postcss-loader": "^6.1.0",
    "postcss-preset-env": "^6.7.0",
    "style-loader": "^2.0.0",
    "webpack": "^5.39.0",
    "webpack-cli": "^4.7.2",
    "webpack-dev-server": "^3.11.2"
  },
  "dependencies": {
    "react": "^17.0.2",
    "react-dom": "^17.0.2"
  }
}
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webpack.congig.js

const webpack = require('webpack');
const path = require('path');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const {CleanWebpackPlugin} = require('clean-webpack-plugin');
const FriendlyErrorsWebpackPlugin = require('friendly-errors-webpack-plugin');
const ESLintPlugin = require('eslint-webpack-plugin');

module.exports = {
  mode: 'development',
  devtool: 'inline-source-map',
  entry: {
    app: './index.js'
  },
  output: {
    path: path.resolve(__dirname, './dist'),
    filename: '[name].bundle.js',
  },
  module: {
    rules: [
      // JavaScript
      {
        test: /\.m?js$/,
        exclude: /node_modules/,
        use: {
          loader: 'babel-loader',
          options: {
            presets: ['@babel/preset-env'],
          },
        },
      },
      // Images
      {
        test: /\.(?:ico|gif|png|jpg|jpeg)$/i,
        type: 'asset/resource',
      },
      // Fonts and SVGs
      {
        test: /\.(woff(2)?|eot|ttf|otf|svg|)$/,
        type: 'asset/inline',
      },
      // CSS, PostCSS, and Sass
      {
        test: /\.(scss|css)$/,
        use: ['style-loader', {
            loader: 'css-loader',
            options: {
              importLoaders: 1,
            },
          }, 'postcss-loader'],
      },
    ],
  },
  // 访问地址
  devServer: {
    historyApiFallback: true,
    contentBase: path.join(__dirname, './dist'),
    open: false,
    hot: true,
    quiet: true,
    port: 3000,
    host: "127.0.0.1",
    allowedHosts: [
      '.oribar.com',
      'oribar.com',
      'localhost',
      '127.0.0.1'
    ]
  },
  plugins: [
    // 打包的时候自动生成html文件
    new HtmlWebpackPlugin({
      title: '铁木真大屏展示',
      template: path.resolve(__dirname, './index.html'),
      filename: 'index.html',
    }),
    // 每次打包的时候删除原有的文件,生成新的文件
    new CleanWebpackPlugin(),
    new FriendlyErrorsWebpackPlugin(),
    // webpack集成eslint  使用eslintrc.js文件
    new ESLintPlugin({
       overrideConfigFile: './.eslintrc.js'
    }),
    // 打包的额时候使用百分比生成进度
    new webpack.ProgressPlugin({
      activeModules: true,
    })
  ],
}
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.babelrc

 {
  "presets": [
    ["@babel/preset-env"],
    ["@babel/preset-react"]
  ]
}
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src/index.js

import React from 'react';
import ReactDOM from 'react-dom';
import App from './src/App';

ReactDOM.render(<App />, document.getElementById('root'));
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