Deno / TypeScript

Steps

Install Deno

Install Deno .

Create the Following File

app.ts


import {
  Application,
  Resource,
} from "https://esm.sh/@drashland/drash/modules/http.native.js";
 
// import {
//   Application,
//   Resource,
// } from "npm:@drashland/drash/modules/http.native.js";
 
class Home extends Resource {    // Create a resource.
  paths = ["/"];                 // Tell it which path(s) it answers to.
 
  GET(request: Request) {        // Handle GET requests to those paths.
    console.log(`Received request: ${request.url}`);
 
    return new Response(         // This is what `app.handle()` resolves with.
      `Oh so easy (written at ${new Date()})`,
    );
  }
}
 
const app = Application
  .builder()                     // Get the app's builder so we can build the app easily.
  .resources(Home)               // Add the `Home` resource to the app.
  .build();                      // Build the app.
 
const hostname = "localhost";    // Define server variables for reuse below.
const port = 1447;
 
Deno.serve({
  hostname,
  port,
  onListen: ({ hostname, port }) => {
    console.log(`\nDrash running at http://${hostname}:${port}`);
  },
  handler: (request: Request): Promise<Response> => {
    return app                 // Let the app
      .handle<Response>(request) // handle the request, and
      .catch((error) => {        // catch anything it throws.
        if (request.url.includes("favicon")) {
          return new Response(); // Browsers ask for this; ignore it.
        }
 
        return new Response(     // Everything else gets a 500.
          "Sorry, but we hit an error!",
          {
            status: 500,
            statusText: "Internal Server Error",
          },
        );
      });
  },
});

Run the Drash App


deno run --allow-net app.ts

Open It

Go to http://localhost:1447 . You should see something like the following:


Oh so easy (written at Wed Nov 01 2023 22:04:56 GMT-0400 (Eastern Daylight Time))

Notes

There is no install step for dependencies — Deno resolves the import over HTTP. The commented-out block shows the npm: specifier if you would rather resolve through npm.

Deno provides a global URLPattern, so this uses the native entry point. Its HTTP server hands you a Web Request and expects a Response back, which is exactly what the chain takes and returns — so the request goes straight through with no context object in between.

This example is in the repository at examples/deno.