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1、React多页面应用1(webpack4 开发环境搭建,包括热更新,api转发等)---2018.04.04
2、React多页面应用2(webpack4 处理CSS及图片,引入postCSS,及图片处理等)---2018.04.08
3、React多页面应用3(webpack4 多页面实现)---2018.04.09
4、React多页面应用4(webpack4 提取第三方包及公共组件)---2018.04.10
5、React多页面应用5(webpack4 多页面自动化生成多入口文件)---2018.04.11
6、React多页面应用6(webpack4 开发环境打包性能小提升)---2018.04.12
7、React多页面应用7(webpack4 生产环境配置)---2018.04.13
8、React多页面应用8(webpack4 gulp自动化发布到多个环境,生成版本号,打包成zip等)---2018.04.16
9、React多页面应用9(webpack4 引入eslint代码检查)---2018.04.17
开发环境:Windows 8,node v8.9.1,npm 5.5.1,WebStorm 2017.2.2
我们之前课程讲的都是开发环境的配置,今天我们来讲下,辛辛苦苦写的代码,如何优雅的打包成生产环境代码?
生产环境代码需要有几个特点:
文件体积尽量的小
浏览器缓存!如果修改,如何让浏览器重新拉取
请求数尽量少
我们带着这几个目的,来配置我们的webpack生产环境!
1、首先我们安装必要的依赖
npm i -D [email protected] [email protected] [email protected] [email protected] [email protected] [email protected]
2、新建 webpack.prod.conf.js
完整代码
const path =require('path');
const merge =require('webpack-merge');
const HtmlWebpackPlugin =require('html-webpack-plugin');
const CopyWebpackPlugin =require('copy-webpack-plugin');
const CleanWebpackPlugin =require('clean-webpack-plugin');
const OptimizeCSSPlugin =require('optimize-css-assets-webpack-plugin');
const ExtractTextPlugin =require("extract-text-webpack-plugin");
const baseWebpackConfig =require("./webpack.base.conf");
const webpackFile =require('./webpack.file.conf');
const entry =require("./webpack.entry.conf");
const webpackCom =require("./webpack.com.conf");
let config = merge(baseWebpackConfig, {
/*设置生产环境*/
mode:'production',
output: {
path: path.resolve(webpackFile.proDirectory),
filename:'js/[name].[chunkhash:8].js',
chunkFilename:"js/[name]-[id].[chunkhash:8].js",
},
optimization: {
//包清单
runtimeChunk: {
name:"manifest"
},
//拆分公共包
splitChunks: {
cacheGroups: {
//项目公共组件
common: {
chunks:"initial",
name:"common",
minChunks:2,
maxInitialRequests:5,
minSize:0
},
//第三方组件
vendor: {
test:/node_modules/,
chunks:"initial",
name:"vendor",
priority:10,
enforce:true
}
}
}
},
plugins: [
// extract css into its own file
new ExtractTextPlugin('css/[name].[md5:contenthash:hex:8].css'),
// Compress extracted CSS. We are using this plugin so that possible
// duplicated CSS from different components can be deduped.
new OptimizeCSSPlugin({
assetNameRegExp:/\.css$/g,
cssProcessor:require('cssnano'),
cssProcessorOptions: {
discardComments: {removeAll:true},
// 避免 cssnano 重新计算 z-index
safe:true
},
canPrint:true
}),
],
module: {
rules: [
{
test:/\.(js|jsx)$/,
use: [
'babel-loader',
],
},
{
test:/\.(js|jsx)$/,
loader:'babel-loader',
exclude:/node_modules/,
},
{
test:/\.(css|pcss)$/,
use: ExtractTextPlugin.extract({
fallback:"style-loader",
use:"css-loader!postcss-loader"
})
},
{
test:/\.(png|jpg|gif|ttf|eot|woff|woff2|svg)$/,
loader:'url-loader?limit=8192&name=[name].[hash:8].[ext]&publicPath=' +webpackFile.resourcePrefix +'&outputPath=' +webpackFile.resource +'/'
},
{
test:/\.swf$/,
loader:'file?name=js/[name].[ext]'
}
]
}
});
let pages = entry;
for (let chunkNamein pages) {
let conf = {
filename: chunkName +'.html',
template:'index.html',
inject:true,
title:webpackCom.titleFun(chunkName,pages[chunkName][1]),
minify: {
removeComments:true,
collapseWhitespace:true,
removeAttributeQuotes:true
},
chunks: ['manifest', 'vendor', 'common', chunkName],
hash:false,
chunksSortMode:'dependency'
};
config.plugins.push(new HtmlWebpackPlugin(conf));
}
/* 清除 dist */
config.plugins.push(new CleanWebpackPlugin([webpackFile.proDirectory], {root: path.resolve(__dirname, '../../'), verbose:true, dry:false}));
let copyObj = [
/* {from: './app/public/plugin', to: './plugin'},//一些不需要走webpack的插件
{from: './app/public/versionTips', to: './versionTips'},//固定不变的浏览器版本提示文件
{from: './app/public/file', to: './resource'},//一些固定的文件，如下载文件*/
{from:'./app/public/img/favicon.ico', to:'./'},//网站favicon.ico
];
let copyArr = [];
copyObj.map((data) => {
copyArr.push(
new CopyWebpackPlugin([{from: data.from, to: data.to, ignore: ['.*']}])
)
});
/* 拷贝静态资源 */
copyArr.map(function (data) {
return config.plugins.push(data)
});
module.exports = config;
修改下 webpack.file.conf.js
module.exports = {
devDirectory:'devBuild', /*开发目录*/
proDirectory:'dist', /*发布目录*/
resource:'resource', /*静态资源*/
resourcePrefix:'resource', /*静态资源前缀*/
};
其他的 跟webpack3 有一些区别
其中
图片大小超过8192,会被base64转码,减少了一次请求.
3、修改package.json
"p": "SET BABEL_ENV=production && webpack --progress --colors --config config/webpack/webpack.prod.conf.js",
4、执行命令
npm run p
文件都自动加上了 hash值,便于浏览器缓存,修改后这个hash会变,浏览器会重新获取.
我们打开文件夹
分别用浏览器打开这几个html文件
图片没有显示？不要慌，这是路径问题，上传到服务器，就应该好了，根据你的路径去自定义！
在这个地方修改
下面我们会讲解,如何自动化发布到服务器上!
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