JavaScript Minifier & Beautifier

class Router{constructor(){this.routes=[];this.middleware=[]}use(fn){this.middleware.push(fn);return this}get(path,...handlers){this.routes.push({method:"GET",path,handlers});return this}post(path,...handlers){this.routes.push({method:"POST",path,handlers});return this} match(method,url){const params={};for(const route of this.routes){if(route.method!==method)continue;const pattern=route.path.replace(/\/g, "\\/")
        .replace(/:([\w]+)/g, (_, key) => {
          return `(?<${key}>[^/]+)`;
        });

      const regex = new RegExp(`^${pattern}$`);
      const match = url.match(regex);

      if (match) {
        Object.assign(params, match.groups);
        return { route, params };
      }
    }
    return null;
  }

  async handle(req, res) {
    // Run middleware first
    for (const mw of this.middleware) {
      await mw(req, res);
      if (res.finished) return;
    }

    const result = this.match(req.method, req.url);
    if (!result) {
      res.status(404).json({ error: "Not Found" });
      return;
    }

    req.params = result.params;
    for (const handler of result.route.handlers) {
      await handler(req, res);
      if (res.finished) return;
    }
  }
}

const router = new Router();

router.use((req, res) => {
  req.startTime = Date.now();
  console.log(`[${req.method}] ${req.url}`);
});

router.get("/api/users/:id", (req, res) => {
  const { id } = req.params;
  res.json({ id, name: "Alice", email: "alice@example.com" });
});

router.post("/api/users", (req, res) => {
  const user = { ...req.body, id: crypto.randomUUID() };
  res.status(201).json(user);
});

export default router;