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I discovered a neat pattern: using join with the function arrow ((->)) as a Monad. When you join over functions, you get: This lets you pass the same argument twice:

I discovered a neat pattern: using join with the function arrow ((->)) as a Monad. When you join over functions, you get: This lets you pass the same argument twice: once to determine what to do, and another to actually do it. In , we have validators with the signature

For Promise timeouts, I was overworrying about doing setTimeouts with an AbortController, and cleaning them up afterwards to avoid memory leaks: The gods of JS smiled in my favor this

For Promise timeouts, I was overworrying about doing setTimeouts with an AbortController, and cleaning them up afterwards to avoid memory leaks: The gods of JS smiled in my favor this week when I found out about AbortSignal.timeout (thanks to ). It simplifies timeouts to a single call: