[Feature] Compare branch package.json to main package.json

Is your feature request related to a problem? Please describe.
I need to be able to ensure PRs for my project have bumped the project package.json version when they commit new code.

Describe the solution you'd like
I want an action to fail a check if package.json hasn't been bumped by running this action from my branch against the main branch. Rather than specifying a file-url, it would be nice to be able to specify a branch instead, and then compare the two that way.

Describe alternatives you've considered
N/a

Additional context
Add any other context or screenshots about the feature request here.

[EndBug]

Hi, thanks for opening the issue
It would be nice having a dedicated option, but for the time being, you can just enter the GitHub Raw URL in the file-url input and that should work
I'll keep this in mind though!

[delhiryder]

Hi @EndBug - Great little github action ! I am also facing the same problem. I have tried to get this feature working by overloading the file-url input (with the latest version if the package.json file on the target branch of the pull request) and the assume-same-versions input set to old. However, my repository is private, so while the action (correctly) handles the ::before special string (by appending the github token to it), I get various failures (different ones for v1 and v2) if I put in the raw URL of my file.
Any thoughts on how this could be addressed ? (One way would be extend this syntax, to say something like ::branch-name=<insert-branch-name>. This modification would be the least disruptive, I think)
Regards,
Sidd (delhiryder)