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Commits on Oct 31, 2025

• Propagate variance reliability (#62604)

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Commits on Sep 29, 2025

• Port microsoft/typescript-go#1764 (#62510)

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  e350126

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• Port microsoft/typescript-go#1757 (#62501)

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Commits on Sep 28, 2025

• Port https://github.com/microsoft/typescript-go/pull/1759 (#62502)

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Commits on Jun 24, 2025

• Use strict subtype relation in `getCommonSupertype` (#61903)

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Commits on Jun 9, 2025

• Fix type variable leaks and cache inconsistencies (#61668)

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Commits on Oct 1, 2024

• Don't issue implicit any when obtaining the implied type for a binding pattern (#60083)

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  jakebailey

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  ca18009

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Commits on Aug 8, 2024

• Properly account for type parameters introduced by contextual types (#59516)

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  278cb94

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Commits on Jul 15, 2024

• Fix circularity errors in intra-binding-pattern references (#59183)

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  652c96c

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Commits on Jun 25, 2024

• Allow partial matches in discrimination logic (#58974)

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  6c01f6c

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Commits on May 31, 2024

• Properly account for `this` argument in intersection apparent type caching (#58677)

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Commits on May 28, 2024

• Only resolve source return type when actually needed during inference (#58650)

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Commits on May 14, 2024

• Fix constant evaluation of template string expressions (#58500)

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Commits on May 2, 2024

• Disable constraint reduction in intersections created by constraint hoisting (#58403)

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Commits on Apr 30, 2024

• Cache discriminated contextual types (#58372)

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Commits on Apr 29, 2024

• Fix ghost errors resulting from out-of-order type checking (#58337)

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Commits on Apr 9, 2024

• Don't propagate partial union/intersection properties between caches (#58083)

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  jakebailey

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Commits on Apr 8, 2024

• Fix constraints of nested homomorphic mapped type instantiations (#58098)

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  066773b

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Commits on Apr 4, 2024

• Monomorphic flow nodes (#57977)

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  39daa13

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• Omit effects-free conditional constructs from control flow graph (#58013)

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  cf4bb58

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Commits on Mar 27, 2024

• Improve optionality detection in mapped type indexed access substitutions (#57946)

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Commits on Mar 26, 2024

• Control flow analysis for element access with variable index (#57847)

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  a22aaf0

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Commits on Mar 21, 2024

• Divide-and-conquer strategy for intersections of unions (#57871)

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Commits on Mar 18, 2024

• Distribute mapped types over array/tuple intersections (#57801)

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Commits on Mar 13, 2024

• Exclude generic string-like types from intersection reduction (#57751)

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Commits on Mar 11, 2024

• Fix nullability intersections in CFA and relations (#57724)

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  ef6a4ab

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Commits on Mar 4, 2024

• Add optionality to mapped type indexed access substitutions (#57549)

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Commits on Feb 19, 2024

• Improve apparent type of mapped types (#57122)

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  d04e348

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Commits on Jan 28, 2024

• Properly handle non-generic string mapping types in unions and intersections (#57197)

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Commits on Jan 19, 2024

• Revise mapped tuple type instantiation logic (#57031)

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Commits on Jan 12, 2024

• Add `NoInfer<T>` intrinsic represented as special substitution type (#56794)

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Commits on Jan 9, 2024

• Preserve type refinements in closures created past last assignment (#56908)

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Commits on Dec 1, 2023

• Check callback parameters bivariantly if they result from instantiation (#56218)

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Commits on Nov 30, 2023

• Reduce intersections of constrained type variables and primitive types (#56515)

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Commits on Nov 29, 2023

• Consistently check assignability to template literal placeholders (#56598)

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