typescripters get hyped - this PR enabling type predicates… — samuel.fm

Samuel

@samuel.fm

typescripters get hyped - this PR enabling type predicates to be inferred from the function body got merged 🥳 github.com/microsoft/Ty...

Infer type predicates from function bodies using control flow analysis by danvk · Pull Request #57465 · microsoft/TypeScript

Fixes #16069 Fixes #38390 Fixes #10734 Fixes #50734 Fixes #12798 This PR uses the TypeScript's existing control flow analysis to infer type predicates for boolean-returning functions where appropri...

futur 🔹15 Mar 2024

the .filter(Boolean) case is absolutely killer

Samuel 15 Mar 2024

huge!

Oliver Kwast 18 Mar 2024

Seems like this case is not working. But .filter(x => x != null) is. You can check this in a playground with the nightly build.

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futur 🔹18 Mar 2024

yeah, realized I misread later on — other way around is even better

ændra.15 Mar 2024

Hype train? More like TYPE TRAIN CHOOWOO 🚂

P(aul) Frazee 17 Mar 2024

huge W

garulon.bsky.social 17 Mar 2024

Thank you for your service in making Javascript bearable 🫡

Doug Lowder 16 Mar 2024

Bill and Ted agree that this is most excellent news

Micah ΘΔ 15 Mar 2024

This is SO huge, holy shit I'm stoked.