GitHub Actions: deno-actions

action.yml

name: name
description: description
inputs:
  deno_run:
    description: Path to the deno script to run
    default: ./.github/actions/example/main.ts
runs:
  using: node20
  main: ./.github/actions/example.index.js

index.js

import o from"node:process";import n,{spawnSync as r}from"node:child_process";import t from"node:os";import e from"node:path";import i from"node:fs/promises";import{createWriteStream as a}from"node:fs";import{pipeline as s}from"node:stream/promises";import{ok as c}from"node:assert";import{fileURLToPath as l}from"node:url";async function d(){const n=o.env.RUNNER_TOOL_CACHE;c(n,"RUNNER_TOOL_CACHE is not set");const l="win32"===t.platform()?"deno.exe":"deno",d=function(){const o=t.platform(),n=t.arch();if("linux"===o&&"x64"===n)return"linux-x64-glibc";if("linux"===o&&"arm64"===n)return"linux-arm64-glibc";if("darwin"===o&&"x64"===n)return"darwin-x64";if("darwin"===o&&"arm64"===n)return"darwin-aarch64";if("win32"===o&&"x64"===n)return"win32-x64";if("win32"===o&&"arm64"===n)return"win32-arm64";throw new Error(`Unsupported platform/arch: ${o}/${n}`)}(),m=e.resolve(n,"deno-actions",d),f=e.join(m,l);try{await i.access(f),console.log(`Using cached Deno at ${f}`)}catch{const o=await async function(o){const n=`@deno/${o}`,r=`https://registry.npmjs.org/${encodeURIComponent(n)}/latest`,t=await fetch(r);if(!t.ok)throw new Error(`Failed to fetch ${n}: ${t.status}`);return t.json()}(d);await async function(o,n){const t=o.dist.tarball;console.log(`Downloading Deno tarball: ${t}`);const c=await fetch(t);if(!c.ok)throw new Error(`Tarball download failed: ${c.status}`);await i.mkdir(n,{recursive:!0});const l=e.join(n,"deno.tar.gz");await s(c.body,a(l)),console.log(`Extracting to ${n} …`);const d=r("tar",["-xzf",l,"-C",n,"--strip-components","1"],{stdio:"inherit"});if(0!==d.status)throw new Error(`tar exited with code ${d.status}`);await i.unlink(l),console.log("Extraction complete.")}(o,m)}return console.log(`Deno binary is ready: ${f}`),f}async function m(){const r=o.env.INPUT_DENO_RUN;r||(console.log(":error::No deno arguments provided"),o.exit(1));const t=["run","--unstable-temporal","-A",r],e=await d();console.log(`Running ${e} ${t.join(" ")}`);const i=n.spawnSync(e,t,{stdio:"inherit",env:{...o.env}});if(i.error)throw i.error;console.log(`Deno exited with ${i}`),o.exitCode=i.status}l(import.meta.url)===o.argv[1]&&await m();export{m as run};

Usage

Copy index.js (2.1 KB) into your repository (anywhere you like) and set its path in the runs.main field of your action.yml. Then, in your Deno-based custom Action, put the path to your Deno script in inputs.deno_run.default. With that in place, your Deno script can be executed directly from the GitHub Action.