Rest Api Decorators with Bun.js.

• Step 1 : Install the package

• Step 2 : Create a Controller

import { Controller, Delete, Get, Post, Put } from "bunjs-common";

@Controller("cars")
export class CarsController {
  @Get()
  async getCars(): Promise<Response> {
    const cars = [
      { id: 1, model: "Toyota" },
      { id: 2, model: "Ford" },
    ];
    return Response.json(cars);
  }

  @Get("new")
  async getCarsNew(): Promise<Response> {
    const cars = [
      { id: 1, model: "Toyota" },
      { id: 2, model: "Ford" },
      { id: 3, model: "Mercedes" },
      { id: 4, model: "BMW" },
    ];
    return Response.json(cars);
  }

  @Get(":id")
  async getCarById(_req: Request, params: { id: string }): Promise<Response> {
    const car = { id: params.id, model: "Mercedes" };
    return Response.json(car);
  }

  @Post()
  async createCar(req: Request): Promise<Response> {
    const body = await req.json();
    return new Response(`Created car with data: ${JSON.stringify(body)}`, {
      status: 201,
    });
  }

  @Put(":id")
  async updateCar(req: Request, params: { id: string }): Promise<Response> {
    const body = await req.json();
    return new Response(
      `Updated car ${params.id} with data: ${JSON.stringify(body)}`,
      {
        status: 201,
      }
    );
  }

  @Delete(":id")
  async deleteCar(_req: Request, params: { id: string }): Promise<Response> {
    return new Response(`Deleted car with ID ${params.id}`, { status: 200 });
  }
}

• Step 3 :

In your server.ts

const routes = createRoutes([CarsController]);

const server = serve({
    port: 5555,
    async fetch(req) {
    const url = new URL(req.url);
    const method = req.method;


    for (const route of routes) {
        if (route.method === method) {
            const matched = route.matchFn(url.pathname);
            if (matched) {
            return await route.handler(
                req,
                matched.params as Record<string, string>
            );}
        }
    }

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

console.log(Listening on http://localhost:${server.port});

• Step 4 :

bun run server.ts