Vite 原始碼解讀 – 動手實作陽春版 Vite part 1

Vite is a build tool for modern web development. It is designed to be fast and lean, providing an efficient development experience for developers. In this article, we will be looking at the source code of Vite and how to implement a basic version of Vite’s dev server.

Understanding Vite’s Source Code

Vite’s source code is written in TypeScript and is available on GitHub. By analyzing the source code, we can gain a better understanding of how Vite works and how to replicate its functionality.

Implementing a Basic Vite Dev Server

Below is a basic example of how to implement a simple version of Vite’s dev server using Node.js:

“`javascript
const http = require(‘http’);
const fs = require(‘fs’);
const path = require(‘path’);
const { createServer } = require(‘vite’);

const server = http.createServer(async (req, res) => {
try {
const { url } = req;
const filePath = path.resolve(__dirname, `.${url}`);
let file = await fs.promises.readFile(filePath, ‘utf-8’);
if (url === ‘/’) {
file = await fs.promises.readFile(path.resolve(__dirname, ‘index.html’), ‘utf-8’);
}
res.end(file);
} catch (e) {
res.statusCode = 404;
res.end(‘Not Found’);
}
});

server.listen(3000, () => {
console.log(‘Server running at http://localhost:3000/’);
});
“`

This simple example creates a basic HTTP server that serves files from the local directory. It listens on port 3000 and will serve the `index.html` file for the root URL.

Conclusion

In this article, we have looked at the source code of Vite and implemented a basic version of Vite’s dev server. Understanding the source code of tools like Vite can provide valuable insights into how they work and how to create similar functionality.