Beautify all files before/after a pull request on github

Question

Is there a way so that whenever a pull request is created on github, a new pull request is automatically created after running some npm command (ex. npm run beautify) so that I don't have to worry about the beautification process.

If any such thing can be done which automatically adds a commit to the current pull request which beautifies all the files, even that works fine.

I am ok with using any free third party softwares (Greenkeeper, travis or whatever)

Answer 1

You can use a git hook both on server and local or set up local filters (smudge/clean) to beautify your code before it even being committed to the repo.

Git hooks

Read the official docs for a full reference.

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Smudge / clean

Read all about it and to set it up here:
https://git-scm.com/book/en/v2/Customizing-Git-Git-Attributes

It turns out that you can write your own filters for doing substitutions in files on commit/checkout.

These are called clean and smudge filters.

In the .gitattributes file, you can set a filter for particular paths and then set up scripts that will process files just before they’re checked out (“smudge”, see Figure below) and just before they’re staged (“clean”, see Figure 8-3).

These filters can be set to do all sorts of fun things.