本文主要介绍了关于webpack配置的最佳实践，本文分享的实践具有以下的优势：
- 使用happypack提升打包速度。
- 使用MD5 hash可以生成文件版本，进行版本控制
- 在非单页面的系统中支持多个入口的配置
- 模板中可以利用htmlplugin输出一些配置性的信息
- 支持devserver，支持本地json数据的mock
一、webpack最佳实践中的需求
1.热加载
2.语法校验
3.js打包
4.模板打包
二、解决方案
1.webpack.config.json
页面文件映射
function getHtmlPluginArr() {
var data = JSON.parse(fs.readFileSync('entryconf.json','utf-8'));
var pageList = data.pageList;
var resultObj = {
"pluginArr": [],"entryObj": {}
};
for (var index = 0; index < pageList.length; index++) {
var element = pageList[index];
var entry = element.entry;
//通过对app.json中src的路径截取获得分发路径
var filename = (function () {
var filenameStr = entry.split("./app/page/")[1];
return filenameStr.substr(0,filenameStr.lastIndexOf("."));
})();
var title = element.title;
var extra = element.extra;
resultObj.entryObj[filename] = entry;
//利用路径一部分来进行HtmlwebpackPlugin的chunks
resultObj.pluginArr.push(
new HtmlwebpackPlugin({
chunks: [filename],//当前页面js
title: title,extra: extra,//包含页面额外的配置信息
template: "app/" + "template.ejs",filename: 'views/'+filename + '.ejs',chunksSortMode: "dependency"//按chunks的顺序对js进行引入
})
);
//HappyPack,loader多进程去处理文件
resultObj.pluginArr.push(
new HappyPack({ id: 'html' }),new HappyPack({ id: 'css' }),new HappyPack({ id: 'js' }),new HappyPack({ id: 'tpl' })
);
}
return resultObj;
}
var appJsonObj = getHtmlPluginArr();
/**通用配置 */
var commonConfig = {
entry: appJsonObj.entryObj,module: {
loaders: [
{ test: /\.html$/,loader: "html?minimize=false",happy: {id: "html"} },{ test: /\.json$/,loader: "json" },{ test: /\.scss|\.css$/,loaders: ["style","css","sass"],happy: {id: "css"} },{ test: /\.(?:jpg|gif|png)$/,loader: 'url?limit=10240&name=images/[name]-[hash:10].[ext]' },{ test: /\.handlebars/,loader: "handlebars",query: { helperDirs: [APP_PATH + "/helper"] },happy: {id: "tpl"} },{ test: /\.js$|\.jsx$/,exclude: /(node_modules|bower_components)/,loader: 'babel',query: { presets: ['es2015'] },happy: {id: "js"} },]
},output: {
path: BUILD_PATH,filename: "js/[name].js"
},externals: {
"jquery": "jQuery"
},//配置短路径引用
resolve: {
extensions: ['','.js','.json','.scss','.vue'],alias: {
vue : 'vue/dist/vue.js'
}
},plugins: appJsonObj.pluginArr,cache: true
}
module.exports = merge(commonConfig,{
output: {
publicPath: '/',path: BUILD_PATH,filename: "js/[name]-[chunkhash:10].js"
},plugins: [
new webpack.optimize.UglifyJsPlugin({ minimize: true }),new WebpackMd5Hash()
]
});
2.模板文件的配置：
<Meta charset="UTF-8">
<%= htmlWebpackPlugin.options.title || '上单'%>
<% if (htmlWebpackPlugin.options.extra&&htmlWebpackPlugin.options.extra.js) {%>
<% for(var i = 0;i < htmlWebpackPlugin.options.extra.js.length;i++){ %>
3.webpack.dev.config.json配置
页面文件映射
function getHtmlPluginArr() {
var data = JSON.parse(fs.readFileSync('app/entries.json',"entryObj": {}
};
for (var index = 0; index < pageList.length; index++) {
var element = pageList[index];
var src = element.entry;
//通过对app.json中src的路径截取获得分发路径
var dist = (function() {
var s1 = src.split("./app/entries/")[1];
var s2 = s1.substr(0,s1.lastIndexOf("/"));
return s2;
})();
var title = element.title;
var extra = element.extra;
resultObj.entryObj[dist] = src;
//利用路径一部分来进行HtmlwebpackPlugin的chunks
resultObj.pluginArr.push(
new HtmlwebpackPlugin({
chunks: [dist],//当前页面js
title: title,//包含页面额外的配置信息
template: "app/" + "template.ejs",filename: dist + '.html',chunksSortMode: "dependency" //按chunks的顺序对js进行引入
})
);
}
return resultObj;
}
var appJsonObj = getHtmlPluginArr();
/**通用配置 */
var commonConfig = {
entry: appJsonObj.entryObj,loader: "html?minimize=false" },"sass"] },loader: 'url?limit=10240&name=../images/[name]-[hash:10].[ext]' },loader: "handlebars" },{ test: /\.js$/,query: { presets: ['es2015','stage-3','react'] } },{ test: /\.jsx$/,query: { presets: ['react','es2015']} }
]
},//配置短路径引用
resolve: {
alias: {
module: path.resolve(APP_PATH,'module'),service: path.resolve(APP_PATH,"services"),component: path.resolve(APP_PATH,"components"),entries: path.resolve(APP_PATH,"entries"),routes: path.resolve(APP_PATH,"routes"),node_modules: path.resolve(ROOT_PATH,'node_modules')
},extensions: ['','.jsx']
},devtool: "cheap-source-map",cache: true
}
//webpack-dev-server 提供的是内存级别的server,不会生成build的文件夹
//访问路径直接参照build下的路径 如http://127.0.0.1:8080/shop/updateShop.html
module.exports = merge(commonConfig,{
devServer: {
hot: true,inline: true,progress: true,host: process.env.HOST,port: "8808",proxy: {
'/api/getLeftBar': {
target: 'http://127.0.0.1:8808/mock',//dev
secure: false
},'/api/getIndexData': {
target: 'http://127.0.0.1:8808/mock','/api/getblogs': {
target: 'http://127.0.0.1:8808/mock','/panda/*': {
target: 'http://10.4.233.139:8411/',//转发至本地mock
'/page3/*': {
target: 'http://127.0.0.1:8808',secure: false
}
}
},plugins: [
new webpack.HotModuleReplacementPlugin(),new OpenBrowserPlugin({
url: 'http://127.0.0.1:8808/test.html'
})
]
});
总结
以上就是关于webpack最佳配置的全部内容了，希望本文的内容对大家的学习或者工作能带来一定的帮助，如果有疑问大家可以留言交流，谢谢大家对编程之家的支持。
