01开发环境搭建React18.2源码开发环境搭建使用vite来测试自己仿写的React源码执行情况。编写vite.

React18.2源码开发环境搭建

使用vite来测试自己仿写的React源码执行情况。

mkdir react-basic
cd react-basic

npm init -y
npm install vite @vitejs/plugin-react -D

编写vite.config.js

import path from 'path';
import { defineConfig } from 'vite';
import react from '@vitejs/plugin-react';

export default defineConfig({
  plugins: [react()],
  resolve: {
    alias: {
      // 用于指引vite在打包源码时寻找包所在的位置
      react: path.posix.resolve('src/react'),
      'react-dom': path.posix.resolve('src/react-dom'),
      'react-dom-bindings': path.posix.resolve('src/react-dom-bindings'),
      'react-reconciler': path.posix.resolve('src/react-reconciler'),
      scheduler: path.posix.resolve('src/scheduler'),
      shared: path.posix.resolve('src/shared')
    }
  }
});

项目入口文件项目根目录下的index.html

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>React18.2</title>
  </head>
  <body>
    <div id="root"></div>
    <script type="module" src="./src/main.jsx"></script>
  </body>
</html>

src/main.js：

console.log('main')

创建npm脚本命令： package.json：

{
  "name": "1react",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "dev": "vite --force"
  },
  "author": "",
  "license": "ISC",
  "devDependencies": {
    "@vitejs/plugin-react": "^4.0.3",
    "vite": "^4.4.2"
  }
}

配置vscode编辑器配置文件，以实现在源码中各个文件之间的跳转能力。 jsconfig.json

{
  "compilerOptions": {
    "baseUrl": "./",
    "paths": {
      "react/*": ["src/react/*"],
      "react-dom/*": ["src/react-dom/*"],
      "react-dom-bindings/*": ["src/react-dom-bindings/*"],
      "react-reconciler/*": ["src/react-reconciler/*"],
      "scheduler/*": ["src/scheduler/*"],
      "shared/*": ["src/shared/*"]
    }
  },
  "exclude": ["node_modules", "dist"]
}

执行npm run dev后访问本地启动的服务器地址，在浏览器控制台打印如下内容说明环境初步配置成功。