Setup Javy

🟨 Install Javy for GitHub Actions

- uses: jcbhmr/setup-javy@v1 - run: javy compile main.js -o main.wasm

✅ Installs the javy CLI globally
📌 Supports version pinning
⚡ Caches the installation in $RUNNER_TOOL_CACHE
📥 Downloads from the Javy GitHub releases

Usage

🚀 Here's what you're after:

on: push
jobs:
  job:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: jcbhmr/setup-wasmtime@v2
      - uses: jcbhmr/setup-javy@v1
      - run: javy compile main.js -o main.wasm
      - run: wasmtime main.wasm

Inputs

• javy-version: Which version of Javy to install. This can be an exact version specifier such as 1.3.0 or a semver range like ~1.3.0 or 1.x. Use latest to always install the latest release. Defaults to latest.

• javy-token: The GitHub token to use when fetching the version list from bytecodealliance/javy. You shouldn't have to touch this. The default is the github.token if you're on github.com or unauthenticated (rate limited) if you're not on github.com.

Outputs

• javy-version: The version of Javy that was installed. This will be something like 1.3.0 or similar.

• cache-hit: Whether or not Javy was restored from the runner's cache or download anew.

Development

This GitHub Action uses Bun to bundle the main entry point plus all the imported dependencies into a single .js file ready to be run by main: dist/main.js in the action.yml. To test the action just open a PR (even a draft one) and some magic GitHub Actions will test your changes. 🧙‍♂️

ℹ Once Bun gets Windows support make sure you add back the runs-on: windows-latest test to test-action.yml.