deno serve

In addition to deno run, Deno offers a deno serve command-line option that automatically configures servers based on the exports of your main module, abstracting away implementation details, making your code easier to reason about and maintain.

Here's an example of how you can create a simple HTTP server with declarative fetch:

export default {
  async fetch(_req) {
    return new Response("Hello world!");
  },
};

You can then run the server using the deno serve command:

deno serve server.ts

The logic inside the fetch function can be customized to handle different types of requests and serve content accordingly:

export default {
  async fetch(request) {
    if (request.url.startsWith("/json")) {
      return Response.json({ hello: "world" });
    }

    return new Response("Hello world!");
  },
};