前言
自从webpack 诞生，就开启了webpack的时代，从其他的老大哥打包工具过度而来，详情可看: https://github.com/tstrilogy/…
0. 资源
list of loader: https://webpack.github.io/doc… (关于webpack 所有资源的loader 列表)
webpack doc: https://doc.webpack-china.org/ (webpack的中文文档)
1. 安装环境
本机安装环境:
系统: macos
nodejs: nodejs8.5
npm: 5.3
上面是系统的搭建开发模板的系统环境。
2. 配置目录及文件
{
"name": "handlerbase-template",
"version": "1.0.0",
"description": "use handlebars",
"author": "longfan.zheng",
"private": true,
"scripts": {
"dev": "node build/dev.server.js",
"build": "node build/build.js"
},
"dependencies": {
"bootstrap": "^3.3.7",
"jquery": "^3.2.1"
},
"devDependencies": {
"autoprefixer": "^6.7.2",
"babel-core": "^6.22.1",
"babel-loader": "^6.2.10",
"babel-plugin-transform-runtime": "^6.22.0",
"babel-preset-env": "^1.2.1",
"babel-preset-stage-2": "^6.22.0",
"babel-register": "^6.22.0",
"chalk": "^1.1.3",
"compression-webpack-plugin": "^1.0.0",
"connect-history-api-fallback": "^1.3.0",
"copy-webpack-plugin": "^4.0.1",
"css-loader": "^0.26.1",
"eslint-friendly-formatter": "^3.0.0",
"eventsource-polyfill": "^0.9.6",
"express": "^4.14.1",
"extract-text-webpack-plugin": "^2.0.0",
"file-loader": "^0.10.0",
"friendly-errors-webpack-plugin": "^1.1.3",
"function-bind": "^1.1.0",
"handlebars": "^4.0.10",
"handlebars-loader": "^1.6.0",
"handlebars-template-loader": "^0.8.0",
"html-webpack-plugin": "^2.28.0",
"http-proxy-middleware": "^0.17.3",
"node-sass": "^4.5.3",
"opn": "^4.0.2",
"optimize-css-assets-webpack-plugin": "^1.3.0",
"ora": "^1.1.0",
"rimraf": "^2.6.0",
"sass-loader": "^6.0.6",
"semver": "^5.3.0",
"style-loader": "^0.18.2",
"url-loader": "^0.5.7",
"webpack": "^2.2.1",
"webpack-bundle-analyzer": "^2.9.0",
"webpack-dev-middleware": "^1.10.0",
"webpack-hot-middleware": "^2.16.1",
"webpack-merge": "^2.6.1"
},
"engines": {
"node": ">= 4.0.0",
"npm": ">= 3.0.0"
},
"browserslist": [
"> 1%",
"last 2 versions",
"not ie <= 8"
]
}
上面是关于开发环境的package.json的基本内容，关于依赖就是jquery,bootstrap.其他的开发依赖等待稍后配置说明.
3. 详细配置
根据package.json进行安装:
$ npm install
或者
$ yarn
安装好配置准备如下目录:
目录说明以及文件说明：
|- build 脚本文件位置
|- config 配置文件
|- dist 打包后的文件
|- node_modules node模块
|- src 源码文件
|- static 静态资源(这个是直接复制到打包目录的)
|- .gitignore git忽略文件目录
|- home.html 普通html文件
|- home.js html入口js文件
|- index.html 同上
|- index.js 同上
|- package.json
|- package-lock.json
|- readme.md
文件目录配置如上说明如上。
配置文件的编写 在config 目录下。
公共配置文件 index.js文件
const path = require('path')
const fs = require('fs')
let htmls = fs.readdirSync(path.resolve(__dirname, '..'))
.filter(cv => cv.endsWith('.html')) // 得到root目录下的所有html文件
const suffix = '.vm' // 定义打包后的文件后缀
const files = {} // 定义输出文件的对象
htmls = htmls.map(function (html) {
const name = html.split('.')[0]
files[name] = path.resolve(__dirname, '../dist', name + suffix)
}) // 得到输出文件的名称以及路径
module.exports = {
build: Object.assign({
env: require('./prod.env'),
assetsRoot: path.resolve(__dirname, '../dist'),
assetsSubDirectory: 'static', // 定义静态资源的子目录
assetsPublicPath: '/', // 定义资源的路径
productionSourceMap: true, // 定义产品环境开启sourceMap
productionGzip: true, // 开启产品环境gzip 压缩
productionGizpExtensions: ['js', 'css'], // 定义产品环境gzip压缩的后缀
bundleAnlyzerReport: false //关闭打包后自动打开打包分析报告
}, files), // 打包文件的内容
dev: {
env: require('./dev.env'),
port: 8080, // 定义开发服务器的端口
autoOpenBrowser: true, // 定义是否自动打开浏览器
assetsSubDirectory: 'static', // 定义资源子目录和build的key 定义一样
assetsPublicPath: '/', // 同上
proxyTable: {}, // 代理配置
cssSourceMap: false // 关闭cssSourceMap
} // 开发配置项
}说明: 最后打包出来的文件需要使用volcityjs模板引擎来进行服务器渲染，so 打包的文件最后的即为是xxx.vm文件。需要当前的nodejs 环境支持array.filter方法以及array.map方法
开发文件dev.env.js和prod.env.js 编写
dev.env.js
const merge = require('webpack-merge') // webpack 配置文件合并的模块
const proEnv = require('./prod.env') // 请求产品环境的环境变量
module.exports = merge(proEnv, {
NODE_ENV: '"development"'
}) // 覆盖NODE_ENV的值
prod.env.js
module.exports = {
NODE_ENV: '"production"'
} // 定义产品环境的NODE_ENV上面就就定义好了开发的配置文件，主要是关于打包配置项以及开发配置项的定义。
开始编写build目录下的打包脚本以及webpack的配置文件。
webpack 配置文件
webpack.base.conf.js （基本的webpack 配置文件）
const path = require('path')
const config = require('../config') // 获取index.js
const fs = require('fs')
const webpack = require('webpack')
function resolve (dir) {
return path.join(__dirname, '..', dir)
} // 解析根目录的方法，返回一个绝对路径
function assetsPath (_path) {
var assetsSubDirectory = process.env.NODE_ENV === 'production'
? config.build.assetsSubDirectory
: config.dev.assetsSubDirectory
return path.posix.join(assetsSubDirectory, _path)
} // 通过当前NODE_ENV得到资源路径
const prefix = './' // 定义路径浅醉
let jsFiles = fs.readdirSync(path.resolve(__dirname, '..'))
.filter(function (cv) {
return cv.endsWith('.js')
}) // 得到入口文件，在根目录的js的文件，该项目中就是home.js和index.js
let entries = {}
jsFiles.map(function (cv) {
const name = cv.split('.')[0]
entries[name] = prefix + cv
return cv
}) // 得到一个{ 'home': 'home.js', ...}这样的对象
module.exports = {
entry: entries, // 配置入口文件
output: {
path: config.build.assetsRoot,
filename: '[name].js',
publicPath: process.env.NODE_ENV === 'production'
? config.build.assetsPublicPath
: config.dev.assetsPublicPath
}, // 配置输出
resolve: {
extensions: ['.js', '.hbs', '.json'],
alias: {}
}, // 配置require.resolve的解析，可以直接使用require('main.js')或者require('main.hbs')或者require('main.json')都可以省略后缀
devtool: 'source-map',
module: {
rules: [ // 配置loader
{
test: /\.js$/,
loader: 'eslint-loader',
enforce: 'pre',
include: [resolve('src')],
options: {
formatter: require('eslint-friendly-formatter')
}
},
{
test: /\.hbs$/, // 在这里配置了hbs后缀的文件解析。
loader: 'handlebars-loader',
query: {}
},
{
test: /\.js$/,
loader: 'babel-loader',
include: [resolve('src')]
},
{
test: /\.(png|jpe?g|gif|svg)(\?.*)?$/,
loader: 'url-loader',
options: {
limit: 10000,
name: assetsPath('img/[name].[hash:7].[ext]')
}
},
{
test: /\.(mp4|webm|ogg|mp3|wav|flac|aac)(\?.*)?$/,
loader: 'url-loader',
options: {
limit: 10000,
name: assetsPath('media/[name].[hash:7].[ext]')
}
},
{
test: /\.(woff2?|eot|ttf|otf)(\?.*)?$/,
loader: 'url-loader',
options: {
limit: 10000,
name: assetsPath('fonts/[name].[hash:7].[ext]')
}
},
{
test: /\.(css|scss)$/, // 这里配置sass的解析。
use: [
{
loader: 'style-loader'
},
{
loader: 'css-loader',
options: {
sourceMap: true
}
},
{
loader: 'sass-loader',
options: {
sourceMap: true
}
}
]
}
]
},
plugins: [
new webpack.ProvidePlugin({
$: 'jquery',
jQuery: 'jquery'
})
] // 这里定义了jquery可以直接在整个项目中使用$或者jQuery，不需要定义
}
webpack.dev.conf.js
const webpack = require('webpack')
const path = require('path')
const merge = require('webpack-merge')
const config = require('../config')
const baseWebpackConfig = require('./webpack.base.conf') // 导入base
const HtmlWebpackPlugin = require('html-webpack-plugin') // 导入html 解析的webpack的插件
const FriendlyErrorsPlugin = require('friendly-errors-webpack-plugin') // 导入友好的错误提示的插件
const fs = require('fs')
Object.keys(baseWebpackConfig.entry).forEach(function (name) {
baseWebpackConfig.entry[name] = ['./build/dev.client'].concat(
baseWebpackConfig.entry[name])
}) // 自动读取在根目录下的html文件，并使用webpack的插件进行解析
let htmls = fs.readdirSync(path.resolve(__dirname, '..'))
.filter(cv => cv.endsWith('.html'))
const prefix = './'
htmls = htmls.map(function (html) {
return new HtmlWebpackPlugin({
filename: prefix + html,
template: prefix + html,
inject: true,
chunks: [html.split('.')[0]]
})
}) // 得到一个HtmlWebpackPlugin 的对象，具体配置看webpack-html-plugin主页
module.exports = merge(baseWebpackConfig, {
devtool: '#cheap-module-eval-source-map',
plugins: [
new webpack.DefinePlugin({
'process.env': config.dev.env
}),
new webpack.HotModuleReplacementPlugin(),
new webpack.NoEmitOnErrorsPlugin(),
new FriendlyErrorsPlugin()
].concat(htmls)
}) // 通过webpack-merge 合并配置文件webpack.prod.conf.js
const path = require('path')
const webpack = require('webpack')
const config = require('../config')
const merge = require('webpack-merge')
const baseWebpackConfig = require('./webpack.base.conf')
const CopyWebpackPlugin = require('copy-webpack-plugin')
const HtmlWebpackPlugin = require('html-webpack-plugin')
const ExtractTextPlugin = require('extract-text-webpack-plugin')
const OptimizeCssPlugin = require('optimize-css-assets-webpack-plugin')
const fs = require('fs')
const env = process.env.NODE_ENV === 'testing'
? require('../config/test.env')
: config.build.env
function assetsPath (_path) {
var assetsSubDirectory = process.env.NODE_ENV === 'production'
? config.build.assetsSubDirectory
: config.dev.assetsSubDirectory
return path.posix.join(assetsSubDirectory, _path)
}
let htmls = fs.readdirSync(path.resolve(__dirname, '..'))
.filter(cv => cv.endsWith('.html'))
const prefix = './'
htmls = htmls.map(function (html) {
const name = html.split('.')[0]
return new HtmlWebpackPlugin({
filename: config.build[name],
template: prefix + html,
inject: true,
chunks: [name, 'vendor', 'manifest'],
minify: {
removeComments: true,
collapseWhitespace: true,
removeAttributeQuotes: true
},
chunksSortMode: 'dependency'
})
})
const webpackConfig = merge(baseWebpackConfig, {
devtool: config.build.productionSourceMap ? '#source-map' : false,
output: {
path: config.build.assetsRoot,
filename: assetsPath('js/[name].[chunkhash].js'),
chunkFilename: assetsPath('js/[id].[chunkhash].js')
},
plugins: [
new webpack.DefinePlugin({
'process.env': env
}),
new webpack.optimize.UglifyJsPlugin({
compress: {
warnings: false
},
sourceMap: true
}),
new webpack.optimize.CommonsChunkPlugin({
name: 'vendor',
minChunks: function (module, count) {
return ( module.resource &&
/\.js$/.test(module.resource) &&
module.resource.indexOf(
path.join(__dirname, '../node_modules')
) === 0)
}
}),
new webpack.optimize.CommonsChunkPlugin({
name: 'manifest',
chunks: ['vendor']
}),
new CopyWebpackPlugin([
{
from: path.resolve(__dirname, '../static'),
to: config.build.assetsSubDirectory,
ignore: ['.*']
}
])
].concat(htmls)
})
if (config.build.productionGzip) {
const CompressionWebpackPlugin = require('compression-webpack-plugin')
webpackConfig.plugins.push(
new CompressionWebpackPlugin({
asset: '[path].gz[query]',
algorithm: 'gzip',
test: new RegExp((
'\\.(' + config.build.productionGizpExtensions.join('|') + ')$'
)),
threshold: 10240,
minRatio: 0.8
})
)
}
if (config.build.bundleAnlyzerReport) {
const BundleAnalyzerPlugin = require(
'webpack-bundle-analyzer').BundleAnalyzerPlugin
webpackConfig.plugins.push(new BundleAnalyzerPlugin())
}
module.exports = webpackConfig
开发环境的打包文件主要是开启压缩功能，可以将node_modules的文件打包一个文件，以及开启压缩等等.
编写开发服务器脚本
const config = require('../config')
if (!process.env.NODE_ENV) {
process.env.NODE_ENV = JSON.parse(config.dev.env.NODE_ENV)
}
const opn = require('opn')
const path = require('path')
const express = require('express')
const webpack = require('webpack')
const proxyMiddleware = require('http-proxy-middleware')
const webpackConfig = process.env.NODE_ENV === 'testing' ? require(
'./webpack.prod.conf') : require('./webpack.dev.conf')
const port = process.env.PORT || config.dev.port
const autoOpenBrowser = !!config.dev.autoOpenBrowser
const proxyTable = config.dev.proxyTable
const app = express()
const complier = webpack(webpackConfig)
const devMiddleware = require('webpack-dev-middleware')(complier, {
publicPath: webpackConfig.output.publicPath,
quiet: true,
noInfo: false
}) // 开启开发中间件
const hotMiddleware = require('webpack-hot-middleware')(complier, {
log: () => console.log,
heartbeat: 2000
}) // 开启热更新
complier.plugin('compilation', function (compilation) {
compilation.plugin('html-webpack-plugin-after-emit', function (data, cb) {
hotMiddleware.publish({action: 'reloadd'})
cb()
})
})
Object.keys(proxyTable).forEach(function (context) {
const options = proxyTable[context]
if (typeof options === 'string') {
options = {target: options}
}
app.use(proxyMiddleware(options.filter || context, options))
})
app.use(require('connect-history-api-fallback')()) // 拦截get请求
app.use(devMiddleware)
app.use(hotMiddleware)
const staticPath = path.posix.join(config.dev.assetsPublicPath,
config.dev.assetsSubDirectory)
app.use(staticPath, express.static('./static')) // 设置静态资源目录和上诉config目录中配置一样
const uri = 'http://localhost:' + port
let _resolve
const readyPromise = new Promise(resolve => {
_resolve = resolve
})
console.log('> Starting dev server...')
devMiddleware.waitUntilValid(() => {
console.log('> Listening at ' + uri + '\n')
if (autoOpenBrowser && process.env.NODE_ENV !== 'test') {
opn(uri)
}
_resolve()
})
const server = app.listen(port)
module.exports = {
ready: readyPromise,
close: () => {
server.close()
}
}
编写客户端热更新模块：
require('eventsource-polyfill')
const hotClient = require(
'webpack-hot-middleware/client?noInfo=true&reload=true')
hotClient.subscribe(function (event) {
// console.log('[hot client]', event.action)
if (event.action === 'reload') {
window.loaction.reload()
}
})
这里主要是使用webpack-hot-middleware的语法，然后根据监听时间刷新页面
编写打包脚本build.js
process.env.NODE_ENV = 'production'
const ora = require('ora') // 控制台的等待的控制器
const rm = require('rimraf') // 删除文件
const path = require('path')
const chalk = require('chalk') // 控制台有颜色输出
const webpack = require('webpack')
const config = require('../config')
const webpackConfig = require('./webpack.prod.conf')
const spinner = ora('building for production...')
spinner.start()
rm(path.join(config.build.assetsRoot, config.build.assetsSubDirectory),
function (err) {
if (err) throw err
webpack(webpackConfig, function (err, stats) {
spinner.stop()
if (err) throw err
process.stdout.write(stats.toString({
colors: true,
modules: false,
children: false,
chunks: false,
chunkModules: false
}) + '\n\n')
console.log(chalk.cyan(' Build complete.\n'))
console.log(chalk.yellow(
' Tip: built files are meant to be served over an HTTP server.\n' +
' Opening index.html over file:// won\'t work.\n'
))
})
})详细请看源码注释以及文件后面的备注. 源码请移步: https://github.com/tstrilogy/…（欢迎提issue和点star）
4. 完成效果
打包后生成的文件:
显示效果:
都可以写出hbs文件重复使用.
5. 扩展
webpack是一个强大的打包工具，上面的配置文件是依据vue-webpack的配置文件，去除了vue的，改写成一个仅仅使用handlebars和jquery以及bootstrap的开发模板。当然可以根据其他的解析loader搭建不同开发环境，都是很容易的。
本文完.
