Issues

• Add strictFunctionTypes to Enhance Type Safety for Function Parameters

  microsoft/TypeScript#58607 · by Filter by author KevBeltrao was closed on May 21, 2024
  3

• Bloomberg TS5.5-beta feedback

  Discussion
  microsoft/TypeScript#58523 · Filter by author murtyjones opened on May 13, 2024
  1

• Type check and Object key completion on overloaded functions with generic types defined in a class are incorrect

  microsoft/TypeScript#58226 · by Filter by author MrKou47 was closed on Apr 17, 2024

• Check nearest package.json dependencies for possible package names for specifier candidates

  Author: TeamFor Uncommitted Bug
  Unread
  microsoft/TypeScript#58176·by weswigham was merged Apr 19, 2024
  59

  

• Array of numbers wrong sort

  Working as Intended
  microsoft/TypeScript#58160 · by Filter by author zefir1990 was closed on Apr 12, 2024
  9

• Support satisfies as a constraint on a function's generic type parameter

  Working as Intended
  microsoft/TypeScript#58031 · by Filter by author rsslldnphy was closed on Apr 8, 2024
  25

• Autocomplete breaks after one property for an array generic

  7.0 LS MigrationDomain: LS: Completion ListsHelp WantedPossible Improvement
  microsoft/TypeScript#57879 · by Filter by author RareSecond was closed on Dec 3, 2025 · Backlog
  4

• Dangerous calls allowed by TS: class generic type, when unknown, should be treated as never in the class methods/callback parameters

  Question
  microsoft/TypeScript#57519 · by Filter by author denis-migdal was closed on Feb 25, 2024
  25

• Type safety lost when generic type used as method parameter

  Question
  microsoft/TypeScript#57071 · by Filter by author TheChilliPL was closed on Jan 23, 2024
  18

• Add types for Object.groupBy() and Map.groupBy()

  For Backlog Bug
  Unread
  microsoft/TypeScript#56805·by bakkot was merged Jan 11, 2024
  23

  

• Stop using "any" in the JS declarations

  microsoft/TypeScript#56618 · by Filter by author coolCucumber-cat was closed on Nov 30, 2023
  32

• Talk about Exceptions Here

  Discussion
  microsoft/TypeScript#56365 · Filter by author RyanCavanaugh opened on Nov 10, 2023
  117

• In function argument, applying a generic type that extends an object type to a conditional type operator doesn't specialise

  Duplicate
  microsoft/TypeScript#56011 · by Filter by author johanrosenkilde was closed on Oct 9, 2023
  10

• Any reason why DANGEROUS operations like this work and surprisingly does not work in ONLY one edge case?

  Question
  microsoft/TypeScript#55763 · by Filter by author abaldawa was closed on Sep 21, 2023
  6

• Allow access to labels in array types and parameter names in functions

  DeclinedSuggestion
  microsoft/TypeScript#55736 · by Filter by author matthew-dean was closed on Sep 13, 2023
  3

• Infer unknown at value positions of objects inferred from keyof T

  Breaking ChangeFor Uncommitted Bug
  Unread
  microsoft/TypeScript#55547·by Andarist was closed Mar 24, 2026
  29

  

• Extend {} type checking failure

  Working as Intended
  microsoft/TypeScript#55546 · by Filter by author aabeborn was closed on Aug 31, 2023
  2

• Higher-kinded Types... And other stuff

  Awaiting More FeedbackSuggestion
  microsoft/TypeScript#55280 · Filter by author GregRos opened on Aug 5, 2023
  11

• Suggestion: existential unions and intersections

  Awaiting More FeedbackSuggestion
  microsoft/TypeScript#55257 · Filter by author angryzor opened on Aug 3, 2023
  7

• Numeric Range Types (Feature Update)

  Feature UpdateSuggestion
  microsoft/TypeScript#54925 · Filter by author RyanCavanaugh opened on Jul 7, 2023
  22

• Generic types should be compatible

  BugDomain: check: Variance RelationshipsHelp Wanted
  microsoft/TypeScript#54892 · Filter by author ccorcos opened on Jul 5, 2023 · Backlog
  3

• Inferring type from a generic constraint

  Duplicate
  microsoft/TypeScript#54673 · by Filter by author thany was closed on Jun 19, 2023
  5

• Calling indexOf and includes in a readonly array results in a "not assignable" error message

  Duplicate
  microsoft/TypeScript#54422 · by Filter by author ytxmobile98 was closed on Jun 1, 2023
  11

• Named/keyed type parameters

  In DiscussionSuggestion
  microsoft/TypeScript#54254 · Filter by author Andarist opened on May 15, 2023
  21

• Comparing a tuple input to a variadic tuple no longer narrows it

  BugFix Available
  microsoft/TypeScript#54048 · by Filter by author ssalbdivad was closed on Jun 27, 2023 · TypeScript 5.2.0
  2