介绍vue-cli脚手架config目录下index.js配置文件

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

require(‘./check-versions‘)()// 检查 Node 和 npm 版本process.env.NODE_ENV = ‘production‘const ora = require(‘ora‘) // 一个很好看的 loading 插件const path = require(‘path‘)const config = require(‘../config‘)//加载config.jsconst webpack = require(‘webpack‘)//加载webpackconst webpackConfig = require(‘./webpack.prod.conf‘)// 加载 webpack.prod.confconsole.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 ?‘ ?Tip:\n‘ + ?‘ ?Built files are meant to be served over an HTTP server.\n‘ + ?‘ ?Opening index.html over file:// won\‘t work.\n‘)var spinner = ora(‘building for production...‘) ?// 使用 ora 打印出 loading + logspinner.start() ?// 开始 loading 动画/* 拼接编译输出文件路径 */var assetsPath = path.join(config.build.assetsRoot, config.build.assetsSubDirectory)rm(‘-rf‘, assetsPath) /* 删除这个文件夹 （递归删除） */mkdir(‘-p‘, assetsPath) /* 创建此文件夹 */cp(‘-R‘, ‘static/*‘, assetsPath) /* 复制 static 文件夹到我们的编译输出目录 */webpack(webpackConfig, function (err, stats) { ?// ?开始 webpack 的编译 ?// 编译成功的回调函数 ?spinner.stop() ?if (err) throw err ?process.stdout.write(stats.toString({ ?????colors: true, ?????modules: false, ?????children: false, ?????chunks: false, ?????chunkModules: false ???}) + ‘\n‘)})

var path = require(‘path‘)var config = require(‘../config‘)var utils = require(‘./utils‘)var projectRoot = path.resolve(__dirname, ‘../‘)var env = process.env.NODE_ENV// check env & config/index.js to decide weither to enable CSS Sourcemaps for the// various preprocessor loaders added to vue-loader at the end of this filevar cssSourceMapDev = (env === ‘development‘ && config.dev.cssSourceMap)/* 是否在 dev 环境下开启 cssSourceMap ，在 config/index.js 中可配置 */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 */var useCssSourceMap = cssSourceMapDev || cssSourceMapProd /* 最终是否使用 cssSourceMap */module.exports = { ?entry: utils.getEntries(‘./src/module/**/*.js‘),// 配置webpack编译入口 ?output: {// 配置webpack输出路径和命名规则 ???path: config.build.assetsRoot,// webpack输出的目标文件夹路径（例如：/dist） ???publicPath: process.env.NODE_ENV === ‘production‘ ? config.build.assetsPublicPath : config.dev.assetsPublicPath, ???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 ?}, ?resolve: { ???extensions: [‘‘, ‘.js‘, ‘.vue‘],//自动解析确定的拓展名,使导入模块时不带拓展名 ???fallback: [path.join(__dirname, ‘../node_modules‘)], ???alias: {// 创建import或require的别名，一些常用的，路径长的都可以用别名 ?????‘vue$‘: ‘vue/dist/vue.common.js‘, ?????‘src‘: path.resolve(__dirname, ‘../src‘), ?????‘assets‘: path.resolve(__dirname, ‘../src/assets‘), ?????‘components‘: path.resolve(__dirname, ‘../src/components‘) ???} ?}, ?resolveLoader: { ???fallback: [path.join(__dirname, ‘../node_modules‘)] ?}, ?module: { ???loaders: [ ?????{ ???????test: /\.vue$/, // vue文件后缀 ???????loader: ‘vue‘ ??//使用vue-loader处理 ?????}, ?????{ ???????test: /\.js$/, ???????loader: ‘babel‘, ???????include: projectRoot, ???????exclude: /node_modules/ ?????}, ?????{ ???????test: /\.json$/, ???????loader: ‘json‘ ?????}, ?????{ ???????test: /\.(png|jpe?g|gif|svg)(\?.*)?$/, ???????loader: ‘url‘, ???????query: { ?????????limit: 500000, ?????????name: utils.assetsPath(‘img/[name].[hash:7].[ext]‘) ???????} ?????}, ?????{ ???????test: /\.(woff2?|eot|ttf|otf)(\?.*)?$/, ???????loader: ‘url‘, ???????query: { ?????????limit: 10000, ?????????name: utils.assetsPath(‘fonts/[name].[hash:7].[ext]‘) ???????} ?????} ???] ?}, ?vue: {// .vue 文件配置 loader 及工具 (autoprefixer) ???loaders: utils.cssLoaders({ sourceMap: useCssSourceMap }),// 调用cssLoaders方法返回各类型的样式对象(css: loader) ???postcss: [ ?????require(‘autoprefixer‘)({ ???????browsers: [‘last 2 versions‘] ?????}) ???] ?}}

‘use strict‘const path = require(‘path‘)const utils = require(‘./utils‘)const webpack = require(‘webpack‘)const config = require(‘../config‘)const merge = require(‘webpack-merge‘)// 一个可以合并数组和对象的插件const 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const 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const 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 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<script>标签插入到页面哪个标签里(body|true|head|false) ?????minify: { ???????removeComments: true, ???????collapseWhitespace: true, ???????removeAttributeQuotes: true ???????// more options: ???????// https://github.com/kangax/html-minifier#options-quick-reference ?????}, ?????// necessary to consistently work with multiple chunks via CommonsChunkPlugin ?????chunksSortMode: ‘dependency‘ ???}),*/ ???// 如果文件是多入口的文件，可能存在，重复代码，把公共代码提取出来，又不会重复下载公共代码了 ???// （多个页面间会共享此文件的缓存） ???// CommonsChunkPlugin的初始化常用参数有解析？ ???// name: 这个给公共代码的chunk唯一的标识 ???// filename，如何命名打包后生产的js文件，也是可以用上[name]、[hash]、[chunkhash] ???// minChunks，公共代码的判断标准：某个js模块被多少个chunk加载了才算是公共代码 ???// split vendor js into its own file ???new webpack.optimize.CommonsChunkPlugin({ ?????name: ‘vendor‘, ?????minChunks: function (module, count) { ???????// any required modules inside node_modules are extracted to vendor ???????return ( ?????????module.resource && ?????????/\.js$/.test(module.resource) && ?????????module.resource.indexOf( ???????????path.join(__dirname, ‘../node_modules‘) ?????????) === 0 ???????) ?????} ???}), ???// extract webpack runtime and module manifest to its own file in order to ???// prevent vendor hash from being updated whenever app bundle is updated/* ???new webpack.optimize.CommonsChunkPlugin({ // 为组件分配ID，通过这个插件webpack可以分析和优先考虑使用最多的模块，并为它们分配最小的ID ?????name: ‘manifest‘, ?????chunks: [‘vendor‘] ???})*/ ?]})// gzip模式下需要引入compression插件进行压缩if (config.build.productionGzip) { ?var CompressionWebpackPlugin = require(‘compression-webpack-plugin‘) ?webpackConfig.plugins.push( ???new CompressionWebpackPlugin({ ?????asset: ‘[path].gz[query]‘, ?????algorithm: ‘gzip‘, ?????test: new RegExp( ???????‘\\.(‘ + ???????config.build.productionGzipExtensions.join(‘|‘) + ???????‘)$‘ ?????), ?????threshold: 10240, ?????minRatio: 0.8 ???}) ?)}if (config.build.bundleAnalyzerReport) { ?const BundleAnalyzerPlugin = require(‘webpack-bundle-analyzer‘).BundleAnalyzerPlugin ?webpackConfig.plugins.push(new BundleAnalyzerPlugin())}module.exports = webpackConfigvar pages = utils.getEntries(‘./src/module/**/*.html‘)for(var page in pages) { ?// 配置生成的html文件，定义路径等 ?var conf = { ???filename: page + ‘.html‘, ???template: pages[page], //模板路径 ???inject: true, ???// excludeChunks 允许跳过某些chunks, 而chunks告诉插件要引用entry里面的哪几个入口 ???// 如何更好的理解这块呢？举个例子：比如本demo中包含两个模块（index和about），最好的当然是各个模块引入自己所需的js， ???// 而不是每个页面都引入所有的js，你可以把下面这个excludeChunks去掉，然后npm run build，然后看编译出来的index.html和about.html就知道了 ???// filter：将数据过滤，然后返回符合要求的数据，Object.keys是获取JSON对象中的每个key ???excludeChunks: Object.keys(pages).filter(item => { ?????return (item != page) ???}) ?} ?// 需要生成几个html文件，就配置几个HtmlWebpackPlugin对象 ?module.exports.plugins.push(new HtmlWebpackPlugin(conf))}