'use strict'
const path = require('path')
const defaultSettings = require('./src/settings.js')
function resolve(dir) {
return path.join(__dirname, dir)
}
const name = defaultSettings.title
// If your port is set to 80,
// use administrator privileges to execute the command line.
// For example, Mac: sudo npm run
// You can change the port by the following methods:
// port = 9999 npm run dev OR npm run dev --port = 9999
const port = process.env.port || process.env.npm_config_port || 9999 // dev port
// 代理的类型及目标地址
const npmConfigTarget = process.env.npm_config_target
const devEnv = process.env.npm_config_dev_env || 'mock'
const proxyTarget = npmConfigTarget || process.env[`PROXY_TARGET_${devEnv.toUpperCase()}`]
const host = devEnv === 'mock' ? 'localhost' : process.env.DEV_SERVER_HOST
if (devEnv === 'local' && !proxyTarget) {
throw new Error('请配置环境变量: PROXY_TARGET_LOCAL')
}
// All configuration item explanations can be find in https://cli.vuejs.org/config/
module.exports = {
/**
* You will need to set publicPath if you plan to deploy your site under a sub path,
* for example GitHub Pages. If you plan to deploy your site to https://foo.github.io/bar/,
* then publicPath should be set to "/bar/".
* In most cases please use '/' !!!
* Detail: https://cli.vuejs.org/config/#publicpath
*/
publicPath: '/',
outputDir: 'dist',
assetsDir: 'static',
lintOnSave: process.env.NODE_ENV === 'development',
productionSourceMap: false,
devServer: {
host,
port,
open: true,
overlay: {
warnings: false,
errors: true
},
proxy: {
'^/': {
target: proxyTarget,
secure: false,
ws: false,
changeOrigin: true
}
}
},
configureWebpack: {
// provide the app's title in webpack's name field, so that
// it can be accessed in index.html to inject the correct title.
name: name,
resolve: {
alias: {
'@': resolve('src'),
'components': resolve('src/components'),
'api': resolve('src/api'),
'utils': resolve('src/utils'),
'constants': resolve('src/constants')
}
}
},
chainWebpack(config) {
// it can improve the speed of the first screen, it is recommended to turn on preload
// config.plugins.delete('preload')
config.plugin('preload').tap(() => [
{
rel: 'preload',
// to ignore runtime.js
fileBlacklist: [ /runtime..*.js$/],
include: 'initial',
},
])
// when there are many pages, it will cause too many meaningless requests
config.plugins.delete('prefetch')
// set svg-sprite-loader
config.module
.rule('svg')
.exclude.add(resolve('src/icons'))
.end()
config.module
.rule('icons')
.test(/.svg$/)
.include.add(resolve('src/icons'))
.end()
.use('svg-sprite-loader')
.loader('svg-sprite-loader')
.options({
symbolId: 'icon-[name]'
})
.end()
// set preserveWhitespace
config.module
.rule('vue')
.use('vue-loader')
.loader('vue-loader')
.tap(options => {
options.compilerOptions.preserveWhitespace = true
return options
})
.end()
config
.when(process.env.NODE_ENV !== 'development',
config => {
//根据路由驱动页面的 runtime 代码默认情况是包含在 build 后的 app.hash.js 内的，
//如果我们改动其他路由，就会导致 runtime 代码改变。从而不光我们改动的路由对应的页面 js 会变，
//含 runtime 代码的 app.hash.js 也会变，对用户体验是非常不友好的。
//为了解决这个问题要设定 runtime 代码单独抽取打包： 但是 runtime 代码由于只是驱动不同路由页面的关系，代码量比较少，请求 js 的时间都大于执行时间了，所以使用 script-ext-html-webpack-plugin 插件将其内链在 index.html 中比较友好。
config
.plugin('ScriptExtHtmlWebpackPlugin')
.after('html')
.use('script-ext-html-webpack-plugin', [
{
// `runtime` must same as runtimeChunk name. default is `runtime`
inline: /runtime..*.js$/,
},
])
.end()
config.optimization.splitChunks({
chunks: 'all',
cacheGroups: {
libs: {
name: 'chunk-libs',
test: /[\/]node_modules[\/]/,
priority: 10,
chunks: 'initial', // only package third parties that are initially dependent
},
elementUI: {
name: 'chunk-elementUI', // split elementUI into a single package
priority: 20, // the weight needs to be larger than libs and app or it will be packaged into libs or app
test: /[\/]node_modules[\/]_?element-ui(.*)/, // in order to adapt to cnpm
},
commons: {
name: 'chunk-commons',
test: resolve('src/components'), // can customize your rules
minChunks: 3, // minimum common number
priority: 5,
reuseExistingChunk: true,
},
},
})
config.optimization.runtimeChunk('single')
}
)
config
.plugin('define')
.tap(args => {
args[0]['__DEV_ENV__'] = JSON.stringify(devEnv)
return args
})
}
}