npm install @pmmmwh/react-refresh-webpack-plugin react-refresh -D

// webpack.config.js
const ReactRefreshPlugin = require('@pmmmwh/react-refresh-webpack-plugin');
const HtmlWebpackPlugin = require('html-webpack-plugin');

module.exports = {
  entry: './index.js',
  module: {
    rules: [
      {
        test: /\.js$/,
        exclude: /node_modules/,
        loader: 'babel-loader',
        options: {
          presets: ['@babel/env', '@babel/preset-react'],
          plugins: [require.resolve('react-refresh/babel')], // react-refresh 添加
        },
      },
    ],
  },
  plugins: [
    new ReactRefreshPlugin(),   // react-refresh 添加
    new HtmlWebpackPlugin({
      template: './index.html',
    }),
  ],
};

熱更新后清除console控制臺

// index.js
if (module.hot) {
  module.hot.accept()
  module.hot.addStatusHandler(status => {
      if (status === 'prepare') console.clear()
  })
}