Bun 1.4 vs Node.js 26 / 24 LTS 对比

// Bun 1.4 — 支持 HTTP/2 的原生服务器（Bun.serve）+ 内置 SQL 客户端
// 使用 bun run server.ts 直接运行 TypeScript，无需转译步骤

import { SQL } from "bun";

// Bun 的内置 SQL 客户端：查询以标签模板字符串编写
const db = new SQL(process.env.DATABASE_URL!);

const server = Bun.serve({
  port: 3000,
  // 自 Bun v1.4.1 起，Bun.serve 支持原生 HTTP/2
  http2: true,
  async fetch(req: Request): Promise<Response> {
    const url = new URL(req.url);

    if (url.pathname === "/api/users" && req.method === "GET") {
      const users = await db`SELECT id, name FROM users LIMIT 20`;
      return Response.json(users);
    }

    if (url.pathname === "/api/upload" && req.method === "POST") {
      const body = await req.formData();
      const file = body.get("file") as File;
      // Bun.write 直接以流方式写入磁盘，无需额外的缓冲区拷贝
      await Bun.write(`./uploads/${file.name}`, file);
      return Response.json({ ok: true, size: file.size });
    }

    return new Response("Not Found", { status: 404 });
  },
});

console.log(`Bun sunucusu ${server.port} portunda dinliyor (HTTP/2 aktif)`);

// 使用 bun install 安装依赖 — 生成与 npm 兼容的 node_modules
// $ bun install
// $ bun test
// $ bun build ./server.ts --outdir ./dist --target bun

// Node.js 24 LTS — 使用原生 http 模块 + type-stripping 直接运行 TS
// Type stripping 自 v23.6.0/v22.18.0 起默认启用，自 v25.2.0/v24.12.0 起趋于稳定：仅支持「可擦除语法」的 TS
// node server.ts（在 24.12+ 和 26.x 中无需额外参数即可运行；如需关闭使用 --no-strip-types）

import { createServer } from "node:http";
import { readFile, writeFile } from "node:fs/promises";
import { Pool } from "pg";

const pool = new Pool({ connectionString: process.env.DATABASE_URL });

const server = createServer(async (req, res) => {
  const url = new URL(req.url ?? "/", `http://${req.headers.host}`);

  if (url.pathname === "/api/users" && req.method === "GET") {
    const result = await pool.query("SELECT id, name FROM users LIMIT 20");
    res.writeHead(200, { "Content-Type": "application/json" });
    res.end(JSON.stringify(result.rows));
    return;
  }

  if (url.pathname === "/api/report" && req.method === "GET") {
    // 使用 worker_threads 在不阻塞主线程的情况下执行 CPU 密集型任务
    const { Worker } = await import("node:worker_threads");
    const worker = new Worker("./report-worker.js");
    worker.once("message", (report) => {
      res.writeHead(200, { "Content-Type": "application/json" });
      res.end(JSON.stringify(report));
    });
    return;
  }

  res.writeHead(404);
  res.end("Not Found");
});

server.listen(3000, () => {
  console.log("Node.js sunucusu 3000 portunda dinliyor");
});

// 使用 npm install 安装依赖
// $ npm install
// $ node --test