feat: Higher-Kinded Types prototype (parser + RFC)#63390
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SAY-5 wants to merge 1 commit intomicrosoft:mainfrom
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feat: Higher-Kinded Types prototype (parser + RFC)#63390SAY-5 wants to merge 1 commit intomicrosoft:mainfrom
SAY-5 wants to merge 1 commit intomicrosoft:mainfrom
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Phase 1 of Higher-Kinded Types (microsoft#1213): - Parser: recognize <F<_>> in type parameter positions - Types: isHigherKinded/hktParameters on TypeParameterDeclaration - RFC: design doc with phased plan - Tests: Functor, Monad, Bifunctor syntax cases
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This repo is closed to development. Also, https://github.com/microsoft/TypeScript/blob/main/CONTRIBUTING.md#use-of-ai-assistance |
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This PR doesn't have any linked issues. Please open an issue that references this PR. From there we can discuss and prioritise. |
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Understood. Apologies for not reading the contributing guidelines properly. |
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This is a prototype exploring parser support for higher-kinded type parameters (
<F<_>>syntax), along with an RFC document laying out a phased approach to full HKT support.Parser changes recognize type parameters that are themselves generic. The RFC covers syntax design, kind inference, and how checker integration would work in a follow-up.
Included test cases cover the patterns people typically want HKTs for: Functor, Monad, Bifunctor, natural transformations.
This is intentionally scoped to parser + design — checker integration is a separate, much larger effort.