在开始写webpack.base.conf.js（简称base）之前，我们先来看一下vue-loader.conf.js这个文件，毕竟在base中我们还会用到：
‘use strict‘//引入前一篇文章的utils文件const utils = require(‘./utils‘)//引入config文件const config = require(‘../config‘)//判断当前是否为生产环境，如果是则返回trueconst isProduction = process.env.NODE_ENV === ‘production‘//是否使用sourceMap，如果是生产环境就使用config文件中index.js中生产环境的配置，否则是否开发环境的配置const sourceMapEnabled = isProduction ?? config.build.productionSourceMap ?: config.dev.cssSourceMapmodule.exports = { ?//utils文件cssLoaders返回的配置项，返回的格式为 ?/* ?????loaders:{ ???????css:ExtractTextPlugin.extract({ ???????use: [cssLoader], ???????fallback: ‘vue-style-loader‘ ?????}), ???????postCss:{ ????????....... ?????} ???} ???*/ ?loaders: utils.cssLoaders({ ???sourceMap: sourceMapEnabled, ???extract: isProduction ?}), ?//是否使用sourceMap ?cssSourceMap: sourceMapEnabled, ?//是否使用cacheBusting，这个配置在config的文章中提到过 ?cacheBusting: config.dev.cacheBusting, ????接下来，我们来看webpack.base.conf.js文件
const path = require(‘path‘)const utils = require(‘./utils‘)const config = require(‘../config‘)const vueLoaderConfig = require(‘./vue-loader.conf‘)//resolve函数返回根路径下的文件或文件夹function resolve (dir) { ?return path.join(__dirname, ‘..‘, dir)}module.exports = { ?//返回根路径 ?context: path.resolve(__dirname, ‘../‘), ?//设置入口文件 ?entry: { ???app: ‘./src/main.js‘ ?}, ?//出口文件 ?output: { ???//根据config模块得知是根目录下的dist文件夹 ???path: config.build.assetsRoot, ???filename: ‘[name].js‘, ???//公共路径，统一为“/” ???publicPath: process.env.NODE_ENV === ‘production‘ ?????? config.build.assetsPublicPath ?????: config.dev.assetsPublicPath ?}, ?resolve: { ???//自动解析的扩展，js,vue,json这三种格式的文件引用时不需要加上扩展了 ???// import File from ‘../path/to/file‘ ???extensions: [‘.js‘, ‘.vue‘, ‘.json‘], ???alias: { ?????//精准匹配，使用vue来替代vue/dist/vue.esm.js路径 ?????‘vue$‘: ‘vue/dist/vue.esm.js‘, ?????//使用@替代src路径，当你引入src下的文件是可以使用import xx from "@/XX.js" ?????‘@‘: resolve(‘src‘), ???} ?}, ?module: { ???rules: [ ??????//vue-loader,module里的配置可以查看webpack文档 ?????{ ???????test: /\.vue$/, ???????loader: ‘vue-loader‘, ???????options: vueLoaderConfig ?????}, ?????{ ???????test: /\.js$/, ???????loader: ‘babel-loader‘, ???????include: [resolve(‘src‘), resolve(‘test‘), resolve(‘node_modules/webpack-dev-server/client‘)] ?????}, ?????{ ???????test: /\.(png|jpe?g|gif|svg)(\?.*)?$/, ???????loader: ‘url-loader‘, ???????options: { ?????????limit: 10000, ?????????name: utils.assetsPath(‘img/[name].[hash:7].[ext]‘) ???????} ?????}, ?????{ ???????test: /\.(mp4|webm|ogg|mp3|wav|flac|aac)(\?.*)?$/, ???????loader: ‘url-loader‘, ???????options: { ?????????limit: 10000, ?????????name: utils.assetsPath(‘media/[name].[hash:7].[ext]‘) ???????} ?????}, ?????{ ???????test: /\.(woff2?|eot|ttf|otf)(\?.*)?$/, ???????loader: ‘url-loader‘, ???????options: { ?????????limit: 10000, ?????????name: utils.assetsPath(‘fonts/[name].[hash:7].[ext]‘) ???????} ?????} ???] ?},手撕vue-cli配置——webpack.base.conf.js篇
原文地址：https://www.cnblogs.com/caideyipi/p/8440332.html