Clarify caching

[mcecode]

Hi! I'm new to AVA and while I was using it I noticed that subsequent runs didn't seem to finish faster even though I wasn't changing some of my test files. This prompted me to try setting up caching, so I set "cache": true in my package.json like the docs suggested. However, it didn't seem to make a difference and I couldn't find the specified node_modules/.cache/ava directory where the cache is supposed to be. Turns out, AVA itself doesn't cache files unless used with @ava/babel. This pull request aims to clarify this, both in the docs and when running npx ava reset-cache.

Some notes on the changes I made to the docs:

• I specified that the cache option is boolean because some (like I did) might think that it can be set to a directory where the cache will then be set.

Some notes on the changes I made to the reset-cache command:

• I removed the return statement at the end of the if check for resetCache because it is redundant as either process.exit() or exit() already terminates the script.
• I changed console.error() to console.log() because the message logged isn't an error.
• I removed the nodir: true option from del as it is not a valid option in fast-glob, fast-glob instead uses onlyFiles which is then set to true by default.

[novemberborn]

Hi @mcecode, thanks for the PR! Unfortunately I haven't had a chance to look at it yet.

[mcecode]

It's okay, I know you guys must be busy with the AVA 4 release and other things. So just tell me if I'm missing something or if need to change anything once you get around to review it. Thanks a lot!

[novemberborn]

Nice, thanks for this @mcecode! I've left some inline comments. I'll also approve CI now so let's see if that flags anything.

[novemberborn]

Looking at the docs for del, it returns the paths of the removed files. So we can check if that's empty and update the messaging based on that. I think that's simpler than having a separate check for the directory.

[mcecode]

Thanks for pointing that out. I can't believe I missed that 😅, I just defaulted to using fs. I've made a commit fixing this.

[mcecode]

Hey @novemberborn, thanks for the feedback! I've added some commits that I think resolve them already. Just looking at the logs, I think the CI failed because the lines I added were not covered by the tests but I'm not so sure. Just tell me if there's anything else I can do.

[novemberborn]

Awesome, thanks @mcecode!