Deploy Deno

Falak deploys Deno apps from a repository with a deno.json or deno.jsonc. Deno is installed on each server the first time a Deno site targets it.

Prerequisites

• A server of type app, web or worker.
• deno.json (or deno.jsonc) with a start task.
• Your app listens on Deno.env.get("PORT").

main.ts

const port = Number(Deno.env.get('PORT') ?? 8000);
const hostname = Deno.env.get('HOST') ?? '127.0.0.1';

Deno.serve({ port, hostname }, () => new Response('Hello from Deno on Falak'));

deno.json

{
  "tasks": {
    "start": "deno run --allow-net --allow-env main.ts"
  }
}

Deploy

1. + Create → Git repository, pick the repository.
2. Choose the Generic Node preset and set the runtime to Deno.
3. Pick servers and a domain, then Deploy.

How it runs

Aspect	Value
Deno version	2.9.7 (FALAK_DENO_VERSION), official release binaries
Detection	deno.json / deno.jsonc in the repository root (comments and trailing commas allowed)
Build	deno install (--frozen when deno.lock exists), then deno task build if defined
Web process	deno task start in the current release
Environment	Site variables + PORT, HOST=127.0.0.1

Limits

• Deno at runtime is covered by unit and feature tests but not yet by Falak’s end-to-end test suite. Report issues you hit.
• Deno.serve is not auto-instrumented; use withFalakRequest from @falak/apm-node. See APM for Node, Bun and Deno.

Next steps

Static sitesDeploy Fresh or Lume output as a static site.

Environment variablesManage variables and references.