'use strict'
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const px2rem = require('postcss-px2rem')
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const path = require('path')
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const postcss = px2rem({
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remUnit: 20 //基准大小 baseSize，需要和rem.js中相同
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});
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const defaultSettings = require('./src/settings.js')
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function resolve(dir) {
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return path.join(__dirname, dir)
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}
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const name = defaultSettings.title // page title
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module.exports = {
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publicPath: './',
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lintOnSave: process.env.NODE_ENV === 'dev',
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productionSourceMap: false,
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configureWebpack: config => {
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config.name = name;
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config.externals = {
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BMap: "BMap"
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};
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config.resolve.modules = [path.resolve('node_modules'), 'node_modules'];
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// 是否生产环境
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if (process.env.NODE_ENV !== "dev") {
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// 忽略输出 Pass true to discard calls to console.* functions.
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config.optimization.minimizer[0].options.terserOptions.compress.drop_console = true;
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}
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},
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css: {
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loaderOptions: {
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css: {},
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postcss: {
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plugins: [
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postcss
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]
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}
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}
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},
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devServer: {
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https: false
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},
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chainWebpack(config) {
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// it can improve the speed of the first screen, it is recommended to turn on preload
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config.plugin('preload').tap(() => [
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{
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rel: 'preload',
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// to ignore runtime.js
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// https://github.com/vuejs/vue-cli/blob/dev/packages/@vue/cli-service/lib/config/app.js#L171
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fileBlacklist: [/\.map$/, /hot-update\.js$/, /runtime\..*\.js$/],
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include: 'initial'
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}
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])
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// when there are many pages, it will cause too many meaningless requests
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config.plugins.delete('prefetch')
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// swf loader
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config.module.rule('swf')
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.test(/\.swf/)
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.use('url-loader')
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.loader('url-loader')
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.options({ limit: 10000 })
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config
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.when(process.env.NODE_ENV !== 'dev',
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config => {
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config
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.plugin('ScriptExtHtmlWebpackPlugin')
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.after('html')
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.use('script-ext-html-webpack-plugin', [{
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// `runtime` must same as runtimeChunk name. default is `runtime`
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inline: /runtime\..*\.js$/
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}])
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.end()
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config
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.optimization.splitChunks({
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chunks: 'all',
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cacheGroups: {
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libs: {
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name: 'chunk-libs',
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test: /[\\/]node_modules[\\/]/,
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priority: 10,
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chunks: 'initial' // only package third parties that are initially dependent
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},
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elementUI: {
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name: 'chunk-elementUI', // split elementUI into a single package
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priority: 20, // the weight needs to be larger than libs and app or it will be packaged into libs or app
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test: /[\\/]node_modules[\\/]_?element-ui(.*)/ // in order to adapt to cnpm
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},
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commons: {
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name: 'chunk-commons',
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test: resolve('src/components'), // can customize your rules
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minChunks: 3, // minimum common number
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priority: 5,
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reuseExistingChunk: true
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}
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}
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})
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// https:// webpack.js.org/configuration/optimization/#optimizationruntimechunk
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config.optimization.runtimeChunk('single')
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}
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)
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},
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}
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