GH actions on forks

[marekdedic]

Hi,
I have my own fork of this repo and one annoying thing is that some GH actions fail when run on a fork (e.g. when I push updated main to my fork).

Specificaly, the pkg.pr.new and GHPages actions fail out of the box, because the fork doesn't have it's own GH pages and doesn't have the pkg.pr.new app enabled.

I propose to disable these two actions on forks by adding if: github.repository == ‘sveltejs/eslint-plugin-svelte’ to them.

See the 2 most recent failing runs:

• https://github.com/marekdedic/eslint-plugin-svelte/actions/runs/13051889040
• https://github.com/marekdedic/eslint-plugin-svelte/actions/runs/13051889054