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Title: Mapped type modifier inference by ahejlsberg · Pull Request #12589 · microsoft/TypeScript · GitHub

Open Graph Title: Mapped type modifier inference by ahejlsberg · Pull Request #12589 · microsoft/TypeScript

X Title: Mapped type modifier inference by ahejlsberg · Pull Request #12589 · microsoft/TypeScript

Description: TypeScript is a superset of JavaScript that compiles to clean JavaScript output. - Mapped type modifier inference by ahejlsberg · Pull Request #12589 · microsoft/TypeScript

Open Graph Description: This PR improves our handling of readonly and optional modifiers in mapped type inference. When inferring to a homomorphic (structure preserving) mapped type { readonly [P in keyof T]: X }, no read...

X Description: This PR improves our handling of readonly and optional modifiers in mapped type inference. When inferring to a homomorphic (structure preserving) mapped type { readonly [P in keyof T]: X }, no read...

Opengraph URL: https://github.com/microsoft/TypeScript/pull/12589

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og:image:altThis PR improves our handling of readonly and optional modifiers in mapped type inference. When inferring to a homomorphic (structure preserving) mapped type { readonly [P in keyof T]: X }, no read...
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Improve handling of modifiers in mapped type inferencehttps://github.com/microsoft/TypeScript/pull/12589/commits/e14412af0e606be6dfcd0a9cdb4b3538317f3828
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