webpack4 設(shè)置mode模式為none 提示沒(méi)有設(shè)置mode切換為developmentvue項(xiàng)目中使用DLL打包vue避免每次打包都要重新build第三方庫(kù)，執(zhí)行腳本的時(shí)候會(huì)報(bào)錯(cuò)，webpack提示沒(méi)有設(shè)置mode 默認(rèn)設(shè)置成了development，導(dǎo)致entry的路徑不是設(shè)置的vendor，雖然打包成功了，但是會(huì)多一個(gè)development中的entry文件相關(guān)代碼webpack.dll.conf.js 相關(guān)代碼const dllWebpackConf = {entry: {vendor: ['vue/dist/vue.esm.js']},output: {filename: '[name].dll.js',path: path.resolve(__dirname, '../dist/dll'),library: '[name]'},plugins: [new Webpack.DllPlugin({  path: path.join(__dirname, '../dist/dll', '[name]-manifest.json'),   name: '[name]'})]}執(zhí)行腳本webpack ---mode=none --config build/webpack.dll.conf.jsWARNING in configurationThe 'mode' option has not been set, webpack will fallback to 'production' for this value. Set 'mode' option to 'development' or 'production'to enable defaults for each environment.dist目錄中dll存放的是打包好的vue文件，同時(shí)會(huì)多一個(gè)main.js，求解為什么不能設(shè)置none。