vue 配置优化
1.Vue脚手架配置插件image-webpack-loader 图片压缩(这个不怎么好用,因为安装插件会有问题)
1.cnpm install image-webpack-loader
2.代码配置
module.exports = {
chainWebpack: config => {
config.module
.rule('min-image')
.test(/\.(png|jpe?g|gif)(\?.*)?$/)
.use('image-webpack-loader')
.loader('image-webpack-loader')
.options({ disable: process.env.NODE_ENV == 'development' ? true : false })//此处为ture的时候不会启用压缩处理,目的是为了开发模式下调试速度更快,网上错误示例直接写为disable:true,如果不去查看文档肯定是要被坑的
.end()
}
}
2.清除控制台输出
1.npm install terser-webpack-plugin@4.2.3 -D
以上版本不兼容 webpack4.x
2. 代码配置
module.exports = {
publicPath: './',
configureWebpack: (config) => {
config.plugins = config.plugins.concat([
new TerserPlugin({
terserOptions: {
compress: {
drop_console: true,
},
},
}),
])
},
}
3.启用gzip压缩(需要配置nginx,可以看出压缩后的文件大小明显变化)
1.npm install compression-webpack-plugin -D
2. 代码配置
const CompressionWebpackPlugin = require('compression-webpack-plugin')
chainWebpack(config) {
// 生产模式下启用gzip压缩 需要配置nginx支持gzip
if (process.env.NODE_ENV === 'production') {
config.plugin('CompressionWebpackPlugin').use(CompressionWebpackPlugin, [
{
filename: '[path][base].gz',
algorithm: 'gzip',
test: new RegExp('\\.(js|css)$'),
// 只处理大于xx字节 的文件,默认:0
threshold: 10240,
// 示例:一个1024b大小的文件,压缩后大小为768b,minRatio : 0.75
minRatio: 0.8, // 默认: 0.8
// 是否删除源文件,默认: false
deleteOriginalAssets: false
}
])
}
}
nginx配置
server {
listen 80;
server_name localhost;
gzip on;
gzip_static on;
gzip_types text/plain text/css application/json application/x-javascript text/xml application/xml application/xml+rss text/javascript;
gzip_proxied any;
gzip_vary on;
gzip_comp_level 6;
gzip_buffers 16 8k;
}
4.开启代码分割
chainWebpack: config => {
config.optimization.minimize(true)// 开启压缩js代码
config.optimization.splitChunks({ // 开启代码分割
chunks: 'all'
})
},
5.代码预加载
1.vue内置 但不兼容 webpack5
config.plugin('preload').tap(() => [
{
rel: 'preload',
// to ignore runtime.js
// https://github.com/vuejs/vue-cli/blob/dev/packages/@vue/cli-service/lib/config/app.js#L171
fileBlacklist: [/\.map$/, /hot-update\.js$/, /runtime\..*\.js$/],
include: 'initial',
},
])
完整配置
const TerserPlugin = require('terser-webpack-plugin')
const CompressionWebpackPlugin = require('compression-webpack-plugin')
/**
* @description: 判断是否为生产环境
* @param {*}
* @return Boolean
*/
const isProduct = () => {
return process.env.NODE_ENV == 'development'
}
module.exports = {
publicPath: './',
chainWebpack: (config) => {
config.plugin('preload').tap(() => [
{
rel: 'preload',
// to ignore runtime.js
// https://github.com/vuejs/vue-cli/blob/dev/packages/@vue/cli-service/lib/config/app.js#L171
fileBlacklist: [/\.map$/, /hot-update\.js$/, /runtime\..*\.js$/],
include: 'initial',
},
])
config.when(isProduct(), () => {
config.module
.rule('min-image')
.test(/\.(png|jpe?g|gif)(\?.*)?$/)
.use('image-webpack-loader')
.loader('image-webpack-loader')
.options({ disable: false }) //此处为ture的时候不会启用压缩处理,目的是为了开发模式下调试速度更快,网上错误示例直接写为disable:true,如果不去查看文档肯定是要被坑的
.end()
config.plugin('CompressionWebpackPlugin').use(CompressionWebpackPlugin, [
{
filename: '[path][base].gz',
algorithm: 'gzip',
test: new RegExp('\\.(js|css)$'),
// 只处理大于xx字节 的文件,默认:0
threshold: 10240,
// 示例:一个1024b大小的文件,压缩后大小为768b,minRatio : 0.75
minRatio: 0.8, // 默认: 0.8
// 是否删除源文件,默认: false
deleteOriginalAssets: false,
},
])
})
config.optimization.minimize(true) // 开启压缩js代码
config.optimization.splitChunks({
// 开启代码分割
chunks: 'all',
})
},
configureWebpack: (config) => {
config.plugins = config.plugins.concat([
new TerserPlugin({
terserOptions: {
compress: {
drop_console: true,
},
},
}),
])
},
}