前端 webpack搭建React应用环境（一）
改环境支持的技术场景：
1. 支持 React
2. 支持 typescript
3.支持 scss
4.支持 调试热更新
一、创建项目目录
npm init
二、安装依赖
npm install --save-dev @babel/core @babel/cli @babel/preset-env @babel/preset-react
npm install --save-dev webpack webpack-cli webpack-dev-server style-loader css-loader babel-loader
npm install html-webpack-plugin clean-webpack-plugin --save-dev
npm install react react-dom --save
npm install ts-loader typescript core-js --save
npm install --save-dev @babel/preset-typescript
npm install --save-dev @babel/preset-react
npm install @types/react-dom @types/react --save-dev
npm install --save-dev node-sass sass-loader
三、目录结构
project_name
public
index.html
src
component
app
app.scss
app.tsx
index.tsx
babel.config.json
package.json
package-lock.json
tsconfig.ts
webpack.config.js
四、index.html文件内容
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<title>React Starter</title>
</head>
<body>
<div id="root"></div>
<noscript>
You need to enable JavaScript to run this app.
</noscript>
</body>
</html>
五、app.scss内容
body{
color: red;
div{
color: greenyellow;
}
}
六、app.tsx文件内容
import React,{FC,useState} from 'react'
import './app.scss'
interface AppProps {
}
export const App: FC<AppProps> =(props)=>{
const [data, setData] = useState(null)
return <article className={'app'}>
hello react
</article>
}
App.defaultProps = {}
export {App as default} from './app'
七、index.tsx文件内容
import React from 'react'
import ReactDOM from 'react-dom'
import App from "./component/app/app"
ReactDOM.render(<App/>, document.getElementById('root'))
八、babel.config.json文件内容
{
"presets": ["@babel/preset-env","@babel/preset-react"]
}
九、package.json文件内容
{
"name": "project_name",
"version": "1.0.0",
"description": "",
"main": "index.js",
"scripts": {
"test": "echo \"Error: no test specified\" && exit 1",
"build": "webpack",
"dev": "webpack server"
},
"author": "",
"license": "ISC",
"devDependencies": {
"@babel/cli": "^7.16.0",
"@babel/core": "^7.16.0",
"@babel/preset-env": "^7.16.4",
"@babel/preset-react": "^7.16.0",
"@babel/preset-typescript": "^7.16.0",
"@types/react": "^17.0.36",
"@types/react-dom": "^17.0.11",
"babel-loader": "^8.2.3",
"clean-webpack-plugin": "^4.0.0",
"css-loader": "^6.5.1",
"html-webpack-plugin": "^5.5.0",
"node-sass": "^6.0.1",
"sass-loader": "^12.3.0",
"style-loader": "^3.3.1",
"webpack": "^5.64.2",
"webpack-cli": "^4.9.1",
"webpack-dev-server": "^4.5.0"
},
"dependencies": {
"core-js": "^3.19.1",
"react": "^17.0.2",
"react-dom": "^17.0.2",
"ts-loader": "^9.2.6",
"typescript": "^4.5.2"
}
}
十、package-lock.json文件内容（随npm自动生成的，无需关注）
十一、tsconfig.json文件内容
{
"compilerOptions": {
"target": "es5",
"lib": [
"dom",
"dom.iterable",
"esnext"
],
"allowJs": true,
"skipLibCheck": true,
"esModuleInterop": true,
"allowSyntheticDefaultImports": true,
"strict": true,
"forceConsistentCasingInFileNames": true,
"noFallthroughCasesInSwitch": true,
"module": "esnext",
"moduleResolution": "node",
"resolveJsonModule": true,
"isolatedModules": false,
"noEmit": false,
"jsx": "react"
},
"include": [
"src"
]
}
十二、webpack.config.js文件内容
const path = require("path")
const webpack = require("webpack")
const HtmlWebpackPlugin = require('html-webpack-plugin')
const {CleanWebpackPlugin} = require('clean-webpack-plugin')
module.exports = {
entry: path.resolve(__dirname, "src/index.tsx"),
mode: "development",
module: {
rules: [
{
test: /\.(js|jsx|ts|tsx)$/,
exclude: /node_modules/,
use:[
{
loader: "babel-loader",
options: {
presets: [
[
"@babel/preset-env",
// 配置信息
{
targets: {
"chrome": "58",
"ie": "11",
},
// 指定 corejs 的版本
"corejs": "3",
// 使用 corejs 的方式 "usage" 表示按需加载
"useBuiltIns": "usage"
}
],
[
"@babel/preset-typescript",
],
[
"@babel/preset-react",
{
}
]
]
}
},
{
loader:"ts-loader"
}
],
},
{
test: /\.(css|scss)$/,
use: [
{
loader:"style-loader",
},
{
loader:"css-loader"
},
{
loader:"sass-loader"
}
]
}
]
},
resolve: {
extensions: ["*", ".js", ".jsx", ".ts", ".tsx"],
},
output: {
path: path.resolve(__dirname, "build"),
filename: "bundle.js"
},
plugins: [
new HtmlWebpackPlugin({
template: path.join(__dirname, 'public/index.html')
}),
new CleanWebpackPlugin({
path: path.join(__dirname, 'build')
})
]
}
十三、完成
启动命令：
npm run-script dev