作为 React 开发人员,我们一直在寻找改善开发体验和应用程序性能的方法。您可能会考虑的一项重大升级是从 Create React App (CRA) 迁移到 Vite。 Vite 提供更快的构建时间、更快的热模块更换 (HMR) 和更简化的开发体验。在这份综合指南中,我们将逐步介绍将 CRA 项目迁移到 Vite 的过程,包括处理代理服务器和启用 Gzip 压缩。
在我们深入了解迁移过程之前,让我们简要讨论一下您可能想要从 CRA 切换到 Vite 的原因:
开始迁移过程之前,请确保您已:
首先,我们新建一个Vite项目:
npm create vite@latest my-vite-app -- --template react cd my-vite-app
此命令使用 React 模板创建一个新的 Vite 项目。我们将使用它作为迁移的基础。
现在,让我们将现有的源代码从 CRA 项目移动到新的 Vite 项目:
我们需要更新 package.json 文件以包含 CRA 项目中的所有依赖项:
"scripts": { "dev": "vite", "build": "vite build", "serve": "vite preview", "test": "vitest", "lint": "eslint src --ext js,jsx --report-unused-disable-directives --max-warnings 0", "preview": "vite preview" }
npm install
在项目根目录创建一个 vite.config.js 文件:
import { defineConfig } from 'vite' import react from '@vitejs/plugin-react' export default defineConfig({ plugins: [react()], resolve: { alias: { '@': '/src', }, }, server: { port: 3000, }, })
此配置设置 React 插件,定义 src 目录的别名,并将开发服务器端口设置为 3000(与 CRA 的默认值匹配)。
Vite 使用 ES 模块,因此您可能需要更新一些导入语句:
Vite 处理环境变量的方式与 CRA 不同:
如果您将 Jest 与 CRA 一起使用,则需要切换到 Vitest,它与 Vite 集成得更好:
npm install -D vitest jsdom @testing-library/react @testing-library/jest-dom
import { defineConfig } from 'vite' import react from '@vitejs/plugin-react' export default defineConfig({ plugins: [react()], test: { globals: true, environment: 'jsdom', setupFiles: './src/setupTests.js', }, })
如果您的 CRA 项目使用了代理配置,您需要在 Vite 中进行设置:
npm install -D http-proxy
import { defineConfig } from 'vite' import react from '@vitejs/plugin-react' import httpProxy from 'http-proxy' const proxy = httpProxy.createProxyServer() export default defineConfig({ plugins: [react()], server: { proxy: { '/api': { target: 'http://localhost:5000', changeOrigin: true, configure: (proxy, options) => { proxy.on('error', (err, req, res) => { console.log('proxy error', err) }) proxy.on('proxyReq', (proxyReq, req, res) => { console.log('Sending Request to the Target:', req.method, req.url) }) proxy.on('proxyRes', (proxyRes, req, res) => { console.log('Received Response from the Target:', proxyRes.statusCode, req.url) }) }, }, }, }, })
This configuration sets up a proxy for /api requests to http://localhost:5000. Adjust the target URL as needed for your backend.
To enable Gzip compression in Vite:
npm install -D vite-plugin-compression
import { defineConfig } from 'vite' import react from '@vitejs/plugin-react' import viteCompression from 'vite-plugin-compression' export default defineConfig({ plugins: [ react(), viteCompression({ verbose: true, disable: false, threshold: 10240, algorithm: 'gzip', ext: '.gz', }), ], // ... other configurations })
This setup will generate Gzip-compressed versions of your assets during the build process.
Remove any CRA-specific files and folders:
Update your README.md to reflect the new Vite setup and commands.
Update your CI/CD pipelines to use the new Vite commands (npm run dev, npm run build, etc.).
Migrating from Create React App to Vite can significantly improve your development experience and application performance. While the process involves several steps, the benefits of faster build times, quicker HMR, and more flexible configuration make it a worthwhile endeavor.
Remember to thoroughly test your application after migration to ensure everything works as expected. You may need to make additional adjustments based on your specific project structure and dependencies.
Have you successfully migrated your project from CRA to Vite? Share your experiences and any additional tips in the comments below!
Happy coding!
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