Webpack5构造React多页面应用
介绍
多个页面之间业务互不关联,页面之间并没有共享的数据
多个页面使用同一个一个服务,使用通用的组件和基础库
保留了传统单页应用的开发模式:支持补充打包,你可以把每个页面看成是一个单独的单页应用
独立部署:每个页面相互独立,可以单独部署,解压缩项目的复杂性,甚至可以在不同的页面选择不同的技术栈
减少包的体积,优化加载渲染流程
快速上手
git clone https://github.com/zhedh/react-multi-page-app.git
yarn install
yarn start
yarn build
简易建设流程
npm初始化
yarn init
约定目录
|____README.md
|____package.json
|____src
| |____utils
| |____components
| |____pages
| | |____page2
| | | |____index.css
| | | |____index.jsx
| | |____page1
| | | |____index.css
| | | |____index.jsx
webpack配置
yarn add -D webpack webpack-cli
touch webpack.config.js
module.exports = {
entry: {
page1: "./src/pages/page1/index.jsx",
page2: "./src/pages/page2/index.jsx",
// ...
},
};
module.exports = {
entry: {
page1: "./src/pages/page1/index.jsx",
page2: "./src/pages/page2/index.jsx",
// ...
},
output: {
path: path.resolve(__dirname, "./dist"),
filename: "[name]/index.js",
},
};
yarn add -D babel-loader @babel/core @babel/preset-env
module.exports = {
...
module: {
rules: [
{
test: /\.jsx?$/,
exclude: /(node_modules|bower_components)/,
use: {
loader: 'babel-loader',
options: {
presets: ['@babel/preset-env']
}
}
}
]
},
}
yarn add -D style-loader css-loader
module.exports = {
...
module: {
...
rules: [
{
test: /\.css$/i,
use: [
'style-loader',
'css-loader'
],
},
]
},
}
yarn add -D html-webpack-plugin
module.exports = {
...
plugins: [
new HtmlWebpackPlugin({
filename: 'page1/index.html',
chunks: ['page1']
}),
new HtmlWebpackPlugin({
filename: 'page2/index.html',
chunks: ['page2']
}),
],
}
页面编辑
import "./index.css";
document.querySelector("body").append("PAGE1");
body {
color: blue;
}
import "./index.css";
document.querySelector("body").append("PAGE2");
body {
color: green;
}
打包
webpack
├── page1
│ ├── index.html
│ └── index.js
└── page2
├── index.html
└── index.js
完整的配置文件
const path = require("path");
const HtmlWebpackPlugin = require("html-webpack-plugin");
module.exports = {
entry: {
page1: "./src/pages/page1/index.jsx",
page2: "./src/pages/page2/index.jsx",
},
output: {
path: path.resolve(__dirname, "./dist"),
filename: "[name]/index.js",
},
module: {
rules: [
{
test: /\.css$/i,
use: ["style-loader", "css-loader"],
},
{
test: /\.m?jsx$/,
exclude: /(node_modules|bower_components)/,
use: {
loader: "babel-loader",
options: {
presets: ["@babel/preset-env"],
},
},
},
],
},
plugins: [
new HtmlWebpackPlugin({
filename: "page1/index.html",
chunks: ["page1"],
// chunks: ['page1', 'page1/index.css']
}),
new HtmlWebpackPlugin({
filename: "page2/index.html",
chunks: ["page2"],
}),
],
};
{
"name": "react-multi-page-app",
"version": "1.0.0",
"description": "react 多页面应用",
"main": "index.js",
"license": "MIT",
"devDependencies": {
"@babel/core": "^7.12.9",
"@babel/preset-env": "^7.12.7",
"babel-loader": "^8.2.2",
"css-loader": "^5.0.1",
"html-webpack-plugin": "^4.5.0",
"style-loader": "^2.0.0",
"webpack": "^5.9.0",
"webpack-cli": "^4.2.0"
}
}
流程优化
分离开发生产环境
mkdir config
cd config
touch webpack.base.js
touch webpack.dev.js
touch webpack.prod.js
├── webpack.base.js
├── webpack.dev.js
└── webpack.prod.js
const path = require("path");
const HtmlWebpackPlugin = require("html-webpack-plugin");
module.exports = {
entry: {
page1: "./src/pages/page1/index.jsx",
page2: "./src/pages/page2/index.jsx",
},
output: {
path: path.resolve(__dirname, "./dist"),
filename: "[name]/index.js",
},
module: {
rules: [
{
test: /\.css$/i,
use: ["style-loader", "css-loader"],
},
{
test: /\.js$/,
exclude: /(node_modules|bower_components)/,
use: {
loader: "babel-loader",
options: {
presets: ["@babel/preset-env"],
},
},
},
],
},
plugins: [
new HtmlWebpackPlugin({
filename: "page1/index.html",
chunks: ["page1"],
}),
new HtmlWebpackPlugin({
filename: "page2/index.html",
chunks: ["page2"],
}),
],
};
安装webpack-merge,用于合并webpack配置信息
yarn add -D webpack-merge
安装webpack-dev-server,用于启动开发服务
yarn add -D webpack-dev-server
开发配置如下
const { merge } = require("webpack-merge");
const path = require("path");
const base = require("./webpack.base");
module.exports = merge(base, {
mode: "development",
devtool: "inline-source-map",
target: "web",
devServer: {
open: true,
contentBase: path.join(__dirname, "./dist"),
historyApiFallback: true, //不跳转
inline: true, //实时刷新
hot: true, // 开启热更新,
port: 8000,
},
});
配置启动命令
{
"scripts": {
"start": "webpack serve --mode development --env development --config config/webpack.dev.js"
},
}
启动
yarn start
预览
http:// localhost:8000 / page2
const { merge } = require('webpack-merge')
const base = require('./webpack.base')
module.exports = merge(base, {
mode: 'production',
})
{
"scripts": {
"start": "webpack serve --mode development --env development --config config/webpack.dev.js",
"build": "webpack --config config/webpack.prod.js"
},
}
yarn build
♡反应
├── page1
│ ├── app.jsx
│ ├── index.jsx
│ └── index.css
└── page2
├── app.js
├── index.jsx
└── index.css
yarn add react react-dom
import React from 'react'
function App() {
return (
我是PAGE1,Hello World
)
}
export default App
import React from 'react'
import ReactDOM from 'react-dom'
import App from './app'
import './index.css'
ReactDOM.render(
, document.getElementById('root'))
body{
background-color: #ccc;
}
#page1 {
color: rebeccapurple;
}
module.exports = {
module: {
// ...
rules: [
// ...
{
test: /\.jsx?$/,
exclude: /(node_modules|bower_components)/,
use: {
loader: 'babel-loader',
options: {
presets: ['@babel/preset-react', '@babel/preset-env'],
plugins: ['@babel/plugin-proposal-class-properties']
}
}
}
]
},
// ...
}
module.exports = {
// ...
resolve: {
extensions: ['.js', '.jsx', '.json']
}
}
cd src
touch template.html
Document
module.exports = {
plugins: [
new HtmlWebpackPlugin({
filename: 'page1/index.html',
chunks: ['page1'],
template: './src/template.html'
}),
new HtmlWebpackPlugin({
filename: 'page2/index.html',
chunks: ['page2'],
template: './src/template.html'
}),
],
}
yarn add @babel/preset-react @babel/plugin-proposal-class-properties
ass
body {
background-color: #ccc;
#page1 {
color: rebeccapurple;
}
}
module.exports = {
// ...
module: {
// ...
rules: [
{
test: /\.(sa|sc|c)ss$/,
use: [
'style-loader',
'css-loader',
'resolve-url-loader',
'sass-loader'
]
},
]
},
// ...
}
yarn add -D resolve-url-loader sass-loader
入口配置和模版自动匹配
cd config
touch webpack.util.js
const glob = require('glob')
function setEntry() {
const files = glob.sync('./src/pages/**/index.jsx')
const entry = {}
files.forEach(file => {
const ret = file.match(/^\.\/src\/pages\/(\S*)\/index\.jsx$/)
if (ret) {
entry[ret[1]] = {
import: file,
}
}
})
return entry
}
module.exports = {
setEntry,
}
const { setEntry } = require('./webpack.util')
module.exports = {
entry: setEntry,
}
function setEntry() {
const files = glob.sync('./src/pages/**/index.jsx')
const entry = {}
files.forEach(file => {
const ret = file.match(/^\.\/src\/pages\/(\S*)\/index\.jsx$/)
if (ret) {
entry[ret[1]] = {
import: file,
dependOn: 'react_vendors',
}
}
})
// 拆分react依赖
entry['react_vendors'] = {
import: ['react', 'react-dom'],
filename: '_commom/[name].js'
}
return entry
}
├── app.jsx
├── index.html
├── index.jsx
└── index.scss
页面1
function getTemplate(name) {
const files = glob.sync(`./src/pages/${name}/index.html`)
if (files.length > 0) {
return files[0]
}
return './src/template.html'
}
function setHtmlPlugin() {
const files = glob.sync('./src/pages/**/index.jsx')
const options = []
files.forEach(file => {
const ret = file.match(/^\.\/src\/pages\/(\S*)\/index\.jsx$/)
if (ret) {
const name = ret[1]
options.push(new HtmlWebpackPlugin({
filename: `${name}/index.html`,
template: getTemplate(name),
chunks: ['react_vendors', name,]
}))
}
})
return options
}
module.exports = {
setEntry,
setHtmlPlugin
}
const { setEntry, setHtmlPlugin } = require('./webpack.util')
module.exports = {
plugins: [
...setHtmlPlugin(),
]
}
yarn add -D html-webpack-plugin glob
配置优化
const HtmlWebpackPlugin = require('html-webpack-plugin')
module.exports = {
plugins: [
new CleanWebpackPlugin(),
]
}
yarn add -D clean-webpack-plugin
const MiniCssExtractPlugin = require('mini-css-extract-plugin')
const OptimizeCSSPlugin = require('optimize-css-assets-webpack-plugin')
module.exports = {
module: {
rules: [
{
test: /\.(sa|sc|c)ss$/,
use: [
// 'style-loader',
MiniCssExtractPlugin.loader,
'css-loader',
'resolve-url-loader',
'sass-loader'
]
},
]
},
plugins: [
new MiniCssExtractPlugin({
filename: '[name]/index.css',
}),
new OptimizeCSSPlugin({
cssProcessorOptions: {
safe: true
}
})
]
}
webpack.util.js
function setHtmlPlugin() {
const files = glob.sync('./src/pages/**/index.jsx')
const options = []
files.forEach(file => {
const ret = file.match(/^\.\/src\/pages\/(\S*)\/index\.jsx$/)
if (ret) {
const name = ret[1]
options.push(new HtmlWebpackPlugin({
filename: `${name}/index.html`,
template: getTemplate(name),
chunks: ['react_vendors', name, '[name]/index.css']
}))
}
})
return options
}
yarn add -D mini-css-extract-plugin optimize-css-assets-webpack-plugin
在 package.json 配置 sideEffects,避免 webpack Tree Shaking 移除.css、.scss 文件
package.json
```json
{
"sideEffects": [
"*.css",
"*.scss"
]
}
项目源码
问题与解答
最后
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