Change Request: Add `lintText` cache support

ESLint version

8.5.0

What problem do you want to solve?

IDE linting can be very slow, especially in larger projects. This is because they use eslint.lintText which, according to the docs, doesn’t use the cache even with cache: true:

The eslint.lintText() method doesn’t use caches even if you pass the options.filePath to the method.

What do you think is the correct solution?

I think (probably read-only) cache support in lintText would make a lot of sense here, and could greatly improve the IDE performance of ESLint. As long as the existing cache invalidation paths work correctly, it seems like a safe enough idea? But I wasn’t able to find any prior discussions on the topic.

Participation

• I am willing to submit a pull request for this change.

Additional comments

No response

[nzakas]

Thanks for the suggestion. I’m guessing there’s a reason we don’t support caching in this case, but it will probably take some digging to figure it out. I’m not opposed to the idea, I’d just want to make sure we know why we aren’t already doing it before we make such a change.

This would end up being a breaking change, though, so we would need to wait for the next major version before releasing it.

[nzakas]

Closing due to age.