Question

You author a JavaScript action whose action.yml declares `runs.using: node20` and `runs.main: index.js`. The source imports `@actions/core` and `@actions/github`. When another repository references your action with `uses: your-org/greet-action@v1`, the workflow fails immediately with an error indicating that the module '@actions/core' cannot be found. Your repository contains only `action.yml`, `index.js`, and `package.json` on the tagged commit. What is the most appropriate fix?

Accepted Answer

Commit the compiled/bundled output (e.g., using ncc to produce a single dist/index.js) or commit node_modules, and point runs.main at the bundled file before retagging v1.

Answer

Add a step in the consumer workflow that runs `npm install` before the `uses:` step so dependencies are available.

Answer

Change `runs.using` to `docker` so that dependencies are installed inside the container image at runtime.

Answer

Add an `npm install` command to the `pre:` entry in action.yml so the runner installs dependencies before executing main.