524 files, 40,000 lines of code, all linted in 3 seconds. Wall time.pic.twitter.com/uIUswozjRM
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What’s the common case perf, e.g. changing a single file with warm cache?
You'd just incur the 23ms for the single file. The cache is file-specific. I went into some more detail in this thread:https://twitter.com/sebmck/status/1108483365479444480 …
This will be great for linting Top-Level Await in an entire code base 
I could give you a regex alone to do that 
It's almost 60fps
(files per second)
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