You can write custom actions in JavaScript, using the toolkit: https://docs.github.com/en/actions/creating-actions/creating-a-javascript-action https://docs.git

You can write custom actions in JavaScript, using the toolkit: https://docs.github.com/en/actions/creating-actions/creating-a-javascript-action https://docs.github.com/en/actions/creating-actions/creating... However, the workflow referencing the custom action would still be the Actions YAML syntax. (disclaimer: I work at GH, but not on Actions)