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Deploy Deno

Deno is natively supported on the Runway platform and the following example describes how to deploy an application written in Typescript using the Deno engine.

Setup

To run an application, no config should be required, but if you may need additional environment variables or maybe even FFI, then the following table shows available options:

If you’re a little familiar with Deno, these variables map to Deno’s (or deno CLI) switches for permissions. For more docs and updates, please subscribe to our repository on GitHub.

config variable default value description
BP_RUNWAY_DENO_VERSION   v2.1.5 the version to use
 BP_RUNWAY_DENO_FILE_VERSION  runtime.txt another fall back for version
 BP_RUNWAY_DENO_PERM_ENV PORT environment variables
 BP_RUNWAY_DENO_PERM_NET true network access
 BP_RUNWAY_DENO_PERM_FFI  false FFI for C, Rust, etc.
 BP_RUNWAY_DENO_PERM_READ  true file system (read)
 BP_RUNWAY_DENO_PERM_RUN false run other executables/scripts
 BP_RUNWAY_DENO_PERM_WRITE false file system (write)
 BP_RUNWAY_DENO_PERM_ALL false file system (read, write)
 BP_RUNWAY_DENO_MAIN main.ts,server.ts entrypoint for deno run

Example

For brevity, we created a project with deno init and replaced the example (in main.ts) with a small server that takes a PORT variable so we can set the port while deploying the application.

import { serve } from "https://deno.land/std@0.205.0/http/server.ts";

const PORT = parseInt(Deno.env.get("PORT") || "8000", 10);

const handler = (request: Request): Response => {
  const url = new URL(request.url);

  if (url.pathname === "/") {
    console.debug(request)
    return new Response("Hello, World!", { status: 200 });
  }

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

console.log(`HTTP web server running. Access it at: http://localhost:${PORT}/`);
serve(handler, { port: PORT });

Deploy to Runway

Create an application on Runway:

$ runway app create
INFO    checking login status                        
INFO    created app "absolute-deno"                 
create app absolute-deno: done
next steps:  
* commit your changes  
* runway app deploy  
* runway open

And deploy:

$ runway app deploy && runway open