feature request: tools: show linting progress / parallelize linting

[mscdex]

• Version: master
• Platform: n/a
• Subsystem: tools

In light of #5595, it would be nice to have some kind of progress output when linting, similar to what we have when running tests.

Additionally, it would be nice to have a -J option to parallelize linting (like the test runner).

[Trott]

Potentially relevant: eslint/eslint#1101

[mscdex]

@Trott As far as I can tell, that --verbose would spam the console with every file linted? I was mainly looking for a simple progress indicator that updates in place.

[Trott]

@mscdex Yup. "Possibly relevant" as in that could evolve into something more like a progress bar, or work done on that would be a precursor to a progress bar. Definitely not a perfect fit for what you're looking for.