公共代码提取功能是针对多入口文件的；
背景：在pageA.js和pageB.js中分别引用subPageA.js和subPageB.js
webpack.config.js文件：
1 var path = require(‘path‘) 2 module.exports = { 3 ????entry:{ 4 ????????pageA:‘./src/pageA.js‘, 5 ????????pageB:‘./src/pageB.js‘ 6 ????}, 7 ????output: { 8 ????????filename: "[name].js", 9 ????????path:path.resolve(__dirname,‘./dist‘)10 ????},11 ????optimization: {12 ????????splitChunks:{13 ????????????cacheGroups: {14 ????????????????vender:{15 ????????????????????test:/node_modules/,16 ????????????????????chunks:‘initial‘,17 ????????????????????name:‘vender‘,18 ????????????????????priority:1019 ????????????????},20 ????????????????utils:{21 ????????????????????chunks:‘initial‘,22 ????????????????????name:‘utils‘,23 ????????????????????minSize:024 ????????????????}25 ????????????}26 ????????}27 ????}28 }webpack配置提取公共代码
原文地址：https://www.cnblogs.com/yangguoe/p/9882266.html