webpack.config.js

const path = require('path')
const { CleanWebpackPlugin } = require('clean-webpack-plugin');
const HtmlWebpackPlugin = require('html-webpack-plugin');

module.exports = {
  mode: 'production',
  entry: './src/index.js',
  output: {
    path: path.resolve(__dirname, 'dist'),
    filename: 'index.js',
    libraryTarget: 'umd',
    library: 'Biu', // peanut 可以随便更换，不是固定值,是函数库名字，类似Jquery
  },
  plugins: [
         new CleanWebpackPlugin(),
         new HtmlWebpackPlugin({ template: './src/index.html' }),
        ],
        module: {
            rules: [
              {
                test: /\.js$/,
                exclude: /(node_modules|bower_components)/,
                use: {
                  loader: 'babel-loader',
                  options: {
                    presets: ['@babel/preset-env']
                  }
                }
              }
            ]
          }

}