vue中config/index.js:配置的详细理解

 1 var path = require(‘path‘) 2 ??3 module.exports = { 4 ??build: { 5 ????index: path.resolve(__dirname, ‘dist/index.html‘), 6 ????assetsRoot: path.resolve(__dirname, ‘dist‘), 7 ????assetsSubDirectory: ‘static‘, 8 ????assetsPublicPath: ‘/‘, 9 ????productionSourceMap: true10 ??},11 ??dev: {12 ????port: 8080,13 ????proxyTable: {}14 ??}15 }

var path = require(‘path‘) 2 ?3 module.exports = { 4 ??build: { // production 环境 5 ????env: require(‘./prod.env‘), // 使用 config/prod.env.js 中定义的编译环境 6 ????index: path.resolve(__dirname, ‘../dist/index.html‘), // 编译输入的 index.html 文件 7 ????assetsRoot: path.resolve(__dirname, ‘../dist‘), // 编译输出的静态资源路径 8 ????assetsSubDirectory: ‘static‘, // 编译输出的二级目录 9 ????assetsPublicPath: ‘/‘, // 编译发布的根目录，可配置为资源服务器域名或 CDN 域名10 ????productionSourceMap: true, // 是否开启 cssSourceMap11 ????// Gzip off by default as many popular static hosts such as12 ????// Surge or Netlify already gzip all static assets for you.13 ????// Before setting to `true`, make sure to:14 ????// npm install --save-dev compression-webpack-plugin15 ????productionGzip: false, // 是否开启 gzip16 ????productionGzipExtensions: [‘js‘, ‘css‘] // 需要使用 gzip 压缩的文件扩展名17 ??},18 ??dev: { // dev 环境19 ????env: require(‘./dev.env‘), // 使用 config/dev.env.js 中定义的编译环境20 ????port: 8080, // 运行测试页面的端口21 ????assetsSubDirectory: ‘static‘, // 编译输出的二级目录22 ????assetsPublicPath: ‘/‘, // 编译发布的根目录，可配置为资源服务器域名或 CDN 域名23 ????proxyTable: {}, // 需要 proxyTable 代理的接口（可跨域）24 ????// CSS Sourcemaps off by default because relative paths are "buggy"25 ????// with this option, according to the CSS-Loader README26 ????// (https://github.com/webpack/css-loader#sourcemaps)27 ????// In our experience, they generally work as expected,28 ????// just be aware of this issue when enabling this option.29 ????cssSourceMap: false // 是否开启 cssSourceMap30 ??}31 }

 1 //引入依赖模块 2 var path = require(‘path‘) 3 var config = require(‘../config‘) // 获取配置 4 var utils = require(‘./utils‘) 5 var projectRoot = path.resolve(__dirname, ‘../‘) 6 ??7 var env = process.env.NODE_ENV 8 // check env & config/index.js to decide weither to enable CSS Sourcemaps for the 9 // various preprocessor loaders added to vue-loader at the end of this file10 var cssSourceMapDev = (env === ‘development‘ && config.dev.cssSourceMap)/* 是否在 dev 环境下开启 cssSourceMap ，在 config/index.js 中可配置 */11 var cssSourceMapProd = (env === ‘production‘ && config.build.productionSourceMap)/* 是否在 production 环境下开启 cssSourceMap ，在 config/index.js 中可配置 */12 var useCssSourceMap = cssSourceMapDev || cssSourceMapProd /* 最终是否使用 cssSourceMap */13 ?14 module.exports = {15 ??entry: { ??// 配置webpack编译入口16 ????app: ‘./src/main.js‘ 17 ??},18 ??output: { ???// 配置webpack输出路径和命名规则19 ????path: config.build.assetsRoot, // webpack输出的目标文件夹路径（例如：/dist）20 ????publicPath: process.env.NODE_ENV === ‘production‘ ? config.build.assetsPublicPath : config.dev.assetsPublicPath, ?// webpack编译输出的发布路径(判断是正式环境或者开发环境等)21 ????filename: ‘[name].js‘ ??// webpack输出bundle文件命名格式，基于文件的md5生成Hash名称的script来防止缓存22 ??},23 ??resolve: {24 ????extensions: [‘‘, ‘.js‘, ‘.vue‘, ‘.scss‘], ?//自动解析确定的拓展名,使导入模块时不带拓展名25 ????fallback: [path.join(__dirname, ‘../node_modules‘)],26 ????alias: { ?// 创建import或require的别名，一些常用的，路径长的都可以用别名27 ??????‘vue$‘: ‘vue/dist/vue‘,28 ??????‘src‘: path.resolve(__dirname, ‘../src‘),29 ??????‘assets‘: path.resolve(__dirname, ‘../src/assets‘),30 ??????‘components‘: path.resolve(__dirname, ‘../src/components‘),31 ??????‘scss_vars‘: path.resolve(__dirname, ‘../src/styles/vars.scss‘)32 ????}33 ??},34 ??resolveLoader: {35 ????fallback: [path.join(__dirname, ‘../node_modules‘)]36 ??},37 ??module: {38 ????loaders: [39 ????????{40 ????????????test: /\.vue$/, // vue文件后缀41 ????????????loader: ‘vue‘ ??//使用vue-loader处理42 ????????},43 ????????{44 ????????????test: /\.js$/,45 ????????????loader: ‘babel‘,46 ????????????include: projectRoot,47 ????????????exclude: /node_modules/48 ????????},49 ????????{50 ????????????test: /\.json$/,51 ????????????loader: ‘json‘52 ????????},53 ????????{54 ????????????test: /\.(png|jpe?g|gif|svg)(\?.*)?$/,55 ????????????loader: ‘url‘,56 ????????????query: {57 ??????????????limit: 10000,58 ??????????????name: utils.assetsPath(‘img/[name].[hash:7].[ext]‘)59 ????????????}60 ????????},61 ????????{62 ????????????test: /\.(woff2?|eot|ttf|otf)(\?.*)?$/,63 ????????????loader: ‘url‘,64 ????????????query: {65 ??????????????limit: 10000,66 ??????????????name: utils.assetsPath(‘fonts/[name].[hash:7].[ext]‘)67 ????????????}68 ????????}69 ????]70 ??},71 ??vue: { ???// .vue 文件配置 loader 及工具 (autoprefixer)72 ????loaders: utils.cssLoaders({ sourceMap: useCssSourceMap }), //// 调用cssLoaders方法返回各类型的样式对象(css: loader)73 ????postcss: [74 ??????require(‘autoprefixer‘)({75 ????????browsers: [‘last 2 versions‘]76 ??????})77 ????]78 ??}79 }

var path = require(‘path‘)var config = require(‘../config‘)var utils = require(‘./utils‘)var webpack = require(‘webpack‘)var merge = require(‘webpack-merge‘)// 一个可以合并数组和对象的插件var baseWebpackConfig = require(‘./webpack.base.conf‘)// 用于从webpack生成的bundle中提取文本到特定文件中的插件// 可以抽取出css，js文件将其与webpack输出的bundle分离var ExtractTextPlugin = require(‘extract-text-webpack-plugin‘) ?//如果我们想用webpack打包成一个文件，css js分离开，需要这个插件var HtmlWebpackPlugin = require(‘html-webpack-plugin‘)// 一个用于生成HTML文件并自动注入依赖文件（link/script）的webpack插件var env = config.build.env// 合并基础的webpack配置var webpackConfig = merge(baseWebpackConfig, { ???// 配置样式文件的处理规则，使用styleLoaders ?module: { ???loaders: utils.styleLoaders({ sourceMap: config.build.productionSourceMap, extract: true }) ?}, ?devtool: config.build.productionSourceMap ? ‘#source-map‘ : false, // 开启source-map，生产环境下推荐使用cheap-source-map或source-map，后者得到的.map文件体积比较大，但是能够完全还原以前的js代码 ?output: { ???path: config.build.assetsRoot,// 编译输出目录 ???filename: utils.assetsPath(‘js/[name].[chunkhash].js‘), ?// 编译输出文件名格式 ???chunkFilename: utils.assetsPath(‘js/[id].[chunkhash].js‘) ?// 没有指定输出名的文件输出的文件名格式 ?}, ?vue: { // vue里的css也要单独提取出来 ???loaders: utils.cssLoaders({ // css加载器，调用了utils文件中的cssLoaders方法,用来返回针对各类型的样式文件的处理方式, ?????sourceMap: config.build.productionSourceMap, ?????extract: true ???}) ?}, ?// 重新配置插件项 ?plugins: [ ???// http://vuejs.github.io/vue-loader/en/workflow/production.html ???// 位于开发环境下 ???new webpack.DefinePlugin({ ?????‘process.env‘: env ???}), ???new webpack.optimize.UglifyJsPlugin({// 丑化压缩代码 ?????compress: { ???????warnings: false ?????} ???}), ???new webpack.optimize.OccurenceOrderPlugin(), ???// extract css into its own file ???new ExtractTextPlugin(utils.assetsPath(‘css/[name].[contenthash].css‘)), ?// 抽离css文件 ???// generate dist index.html with correct asset hash for caching. ???// you can customize output by editing /index.html ???// see https://github.com/ampedandwired/html-webpack-plugin ????// filename 生成网页的HTML名字，可以使用/来控制文件文件的目录结构，最 ?????// 终生成的路径是基于webpac配置的output.path的 ???new HtmlWebpackPlugin({ ???????// 生成html文件的名字，路径和生产环境下的不同，要与修改后的publickPath相结合，否则开启服务器后页面空白 ?????filename: config.build.index, ?????// 源文件，路径相对于本文件所在的位置 ?????template: ‘index.html‘, ?????inject: true,// 要把

// https://github.com/shelljs/shelljs 2 require(‘./check-versions‘)() // 检查 Node 和 npm 版本 3 require(‘shelljs/global‘) ?// 使用了 shelljs 插件，可以让我们在 node 环境的 js 中使用 shell 4 env.NODE_ENV = ‘production‘ 5 ?6 var path = require(‘path‘) ?7 var config = require(‘../config‘) // 加载 config.js 8 var ora = require(‘ora‘) // 一个很好看的 loading 插件 9 var webpack = require(‘webpack‘) ?// 加载 webpack10 var webpackConfig = require(‘./webpack.prod.conf‘) ?// 加载 webpack.prod.conf11 12 console.log( // ?输出提示信息 ～ 提示用户请在 http 服务下查看本页面，否则为空白页13 ??‘ ?Tip:\n‘ +14 ??‘ ?Built files are meant to be served over an HTTP server.\n‘ +15 ??‘ ?Opening index.html over file:// won\‘t work.\n‘16 )17 18 var spinner = ora(‘building for production...‘) ?// 使用 ora 打印出 loading + log19 spinner.start() ?// 开始 loading 动画20 21 /* 拼接编译输出文件路径 */22 var assetsPath = path.join(config.build.assetsRoot, config.build.assetsSubDirectory)23 rm(‘-rf‘, assetsPath) /* 删除这个文件夹 （递归删除） */24 mkdir(‘-p‘, assetsPath) /* 创建此文件夹 */ 25 cp(‘-R‘, ‘static/*‘, assetsPath) /* 复制 static 文件夹到我们的编译输出目录 */26 27 webpack(webpackConfig, function (err, stats) { ?// ?开始 webpack 的编译28 ????// 编译成功的回调函数29 ??spinner.stop()30 ??if (err) throw err31 ??process.stdout.write(stats.toString({32 ????colors: true,33 ????modules: false,34 ????children: false,35 ????chunks: false,36 ????chunkModules: false37 ??}) + ‘\n‘)38 })

"scripts": { ???"dev": "node build/dev-server.js", ???"build": "node build/build.js", ???"watch": "node build/build-watch.js" ?},