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I'm not sure if Eslint has this, but there could be cross-file lints (eg. unused variables). If some file changes, you may need to relint dependencies and dependent files. This could recursively trickle.

I'm not sure if Eslint does this either, but indices or some incremental static analysis sounds like it could help the linter minimize rechecks or use previous state.

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You can tell eslint about globals in it's config. But if you're using variables that arn't declared in the file somehow, that might be an issue you want to look at in general. That's a potential foot gun a linter should be balking at.

if you have one file that every single file across the repo imports in a way and you make changes to that file, you might run the linter for the entire repo. But again, how likely is this scenario?

If the index or incremental static analysis object was designed well enough, I don't think you would need to lint every file, you would just need to look at files that consume that variable. Maybe you would look at every index?

I'm not sure how well this could scale across (600- 1000?) different lints though. I should look into static analysis a bit more.

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