Is there any tutorial for Node JS for GitHub Action? For example, what are the methods and properties exposed by core package? Also, is there a necessity that the file name must be index.js? None of these things seem to be documented properly. Can anyone please help?
This is the official guide for JavaScript Actions:
It links to the core package which has a readme about its features: toolkit/packages/core at main · actions/toolkit · GitHub
The entry point for an Action can be specified in the runs.main key as described here: