webpack学习笔记
学习资源：webpack中文文档,
-
安装
- 前提条件（￥）
- 本地安装（￥）
- 全局安装（￥）
- 最新体验版本（￥）
-
起步
- 基本安装（￥）
- 创建一个bundle文件（￥）
- 模块（￥）
- 使用一个配置文件（￥）
- NPM脚本（NPM Script）（￥）
- 结论（￥）
-
管理资源
- 安装（￥）
- 加载CSS（￥）
- 加载图片（￥）
- 加载字体（￥）
- 加载数据（￥）
- 全局资源（￥）
- 回退处理（￥）
- 衍生阅读（￥）
-
管理输出
- 预先准备（￥）
- 设定HtmlWebpackPlugin（￥）
- 清理/dist文件夹（￥）
- Manifest（￥）
- 结论（￥）
-
开发
- 使用source map（￥）
- 使用一个开发工具（￥）
- 使用观察模式（￥）
- 使用webpack-dev-server（￥）
- 使用webpack-dev-middleware（￥）
- 调整文本编辑器（￥）
- 结论（￥）
-
模块热替换
- 启用HMR（￥）
- 通过Node.js API（￥）
- 问题（￥）
- HMR修改样式表（￥）
- 其他代码和框架（￥）
-
tree shaking
-
生产环境建构
-
代码分离
-
懒加载
-
缓存
-
创建library
-
shimming
-
渐进式网络应用程序
-
TypeScript
-
迁移到新版本
-
使用环境变量
-
建构性能
-
内容安全策略
-
开发-Vagrant
-
管理依赖
-
公共路径（public path）
-
集成
目录
安装
Node.js(LTS- Long Term Support);
//taobao
npm config set registry https://registry.npm.taobao.org
npm install -g cnpm --registry=https://registry.npm.taobao.org
//install local
npm install --save-dev webpack
npm install --save-dev webpack@<version>
//webpack 4+ need command line interface
npm install --save-dev webpack-cli
//npm find webpack in local through one or more 'npm scripts'
"scripts":{
"start": "webpack --config webpack.config.js"
}
//install global
npm install --global webpack
起步
基本安装
mkdir webpack-demo && cd webpack-demo
npm init -y //install package.json
npm install webpack webpack-cli --save-dev
//project 0
//import lodash with a script in html
+./index.html
+./src/index.js
//package.json
+ "private":true,
- "main":"index.js",
创建一个bundle文件
//project 1
//import lodash with a local library
//body->main.js
+./dist/index.html
npm install --save lodash
//import lodash in js as '_'
~./src/index.js
npx webpack
模块
使用一个配置文件
//project 2
+./webpack.config.js
npx webpack --config webpack.config.js //config can have diffrent name
//webpack.config.js used to loader-rules/plugins/resolve-options
NPM脚本（NPM Script）
//package.json --> "scripts:"
//set a short-name
"build":"webpack"
npm run build
结论
管理资源
webpack can load any type of file with loader,and create "dependency graph",
安装
//project 3
//new title for index.html --> Asset Management
~./dist/index.html
加载CSS
npm install --save-dev style-loader css-loader
// add style-loader and css-loader configs in webpack.config.js as module
~./webpack.config.js
//module:{rules:[{module-config},{...}]}
//{test:/.css$/,use:['loader','loader2']}
//project
+./src/style.css
//import style.css
//add css using codes --> element.classList.add('className')
~./src/index.js
//update body`s script name from 'main.js'-->'bundle.js'
~./dist/index.html
npm run build
加载图片
npm install --save-dev file-loader
//config in 'webpack.config.js' -->module
//{test:/.(png|svg|jpg|gif)$/,use:['fileloader'}
~./webpack.config.js
//project
+./src/icon.png
//import icon.png and use it
~./src/index.js
~./src/style.css
npm run build or npx webpack
加载字体
//use 'file-loader' for 'font-family'
//config 'file-loader' for 'font-family-files' in 'webpack.config.js'`
//"test: /.(woff|woff2|eot|ttf|otf)$/,"
~./webpack.config.js
//project
+./src/myff.woff
+./src/myff2.woff
//use 'font-familys' in 'style.css'
@font-face{
font-family: 'Myfont';
src: url('./myff.woff') format('woff'),
url('./myff2.woff') format('woff');
font-weight: 600;
font-style: normal;
}
//and use this self seted 'font-family' in 'stylesheets'
npx webpack
加载数据
//for CSV/TSV and XML not 'json'
npm install --save-dev csv-loader xml-loader
//{test:,use:[]}
~./webpack.config.js
//project
+./src/data.xml
//import and use
~./src/index.js
npx webpack
全局资源
Good for components orgnising and reusing.
回退处理
//project/src/
-data.xml
-myff.woff
-myff2.woff
-myim.jpg
-style.css
//webpack.config.js
-module:{}
//src/index.js
back to second version
衍生阅读
管理输出
try to deal 'index.html' with some plugin.
预先准备
//project
+./src/print.js
//import and use
~./src/index.js
//config 'entry' and 'output'
//entry:{name:'src',name:'src'},
//output:{filename:'[name].bundle.js',path:path.resove(__dirname,'filename')}
~./webpack.config.js
//add 'print.bundle.js' and rename 'bundle.js' to 'app.bundle.js'
~./dist/index.html
npm run build
设定HtmlWebpackPlugin
npm install --save-dev html-webpack-plugin
//use it and declear dependence
//const usename = require ('plugin-name')
//plugins:[new usename({title:''})], //between intry and output
~./webpack.config.js
npm run build
//check this plugin in Github
清理/dist文件夹
npm install --save-dev clean-webpack-plugin
//use it and declear dependence
//new usename(['file-name']),
~./webpack.config.js
npm run build
Manifest
use manifest ,webpack can track your components`s '映射' and the output of bundle
结论
开发
for dev not for produce
使用source map
//track mistakes
//not from 'npm install' but javascirpt
//devtool:'inline-source-map', //before plugins
~./webpack.config.js
//test 'this mistake tracker' with a mistake in 'print.js'
~./print.js
使用一个开发工具
sublime
使用观察模式
//watch the change of dependece map and run build
//"scripts":{"watch": 'webpack --watch',}
~./package.json
npm run watch
使用webpack-dev-server
npm install --save-dev webpack-dev-server
//tell the 'devServer' which file is the 'contentBase'
~./webpack.config.js
//"start": "webpack-dev-server --open",
~./package.json
npm start
使用webpack-dev-middleware
//"express" and "webpack-dev-middleware"
npm install --save-dev express webpack-dev-middleware
//add "publicPath:'/'" in "output"
~./webpack.config.js
//add "server.js"
+./server.js
//"server":"node server.js",
~./package.json
npm run server
//open localhost:3000
调整文本编辑器
结论
模块热替换
Hot Module Replacement is not for produce
启用HMR
under "webpack-dev-server"
//use it in "webpack.config.js"
//const webpack = require('webpack');
//devServer:{hot:true,}
//plugins:[new webpack.NamedModulesPlugin(),new webpack.HotModuleReplaceMentPlugin(),]
~./webpack.config.js
//add hot dealing function in "index.js"
if(module.hot){
module.hot.accept('./print.js',function(){
console.log('Accepting the updated printMe module!');
printMe();
})
}
npm start
//hot change 'print.js'
~./print.js
//click and check the console panal
通过Node.js API ????
//use webpack dev server with Node.js API
//change the config in 'webpack.config.js'
hot:true ---> new WebpackDevServer(compiler,options)
+./dev-server.js
问题
??? there is no problem with me
HMR修改样式表
npm install --save-dev style-loader css-loader
//webpack.config.js-->before 'plugins'
//module: {rules:[{test:/.css$/,use:['style-loader','css-loader']}]},
~./webpack.config.js
//project
+./styles.css
//import './styles.js';
~./index.js
其他代码和框架
React Hot Loader
Vue Loader
I think so far is ok for now.