Issues

• Regression - Array.filter

  Needs More Info
  microsoft/TypeScript#50562 · by Filter by author kbrilla was closed on Aug 7, 2024
  6

• Design Meeting Notes, 8/17/2022

  Design Notes
  microsoft/TypeScript#50521 · by Filter by author DanielRosenwasser was closed on Oct 26, 2023

• Introduce mechanism for manipulating function types without losing generic type information

  Awaiting More FeedbackSuggestion
  microsoft/TypeScript#50481 · Filter by author TheUnlocked opened on Aug 27, 2022
  5

• Google feedback on TS 4.8-beta

  Discussion
  microsoft/TypeScript#50272 · by Filter by author frost-cy was closed on Feb 23, 2024
  3

• Empty Object type hides other types when mixing them with statements or expressions

  Not a Defect
  microsoft/TypeScript#49952 · by Filter by author pyBlob was closed on Jun 8, 2023
  5

• Incorrect type inference of common generic method over union type

  Not a Defect
  microsoft/TypeScript#49893 · by Filter by author voqum was closed on Jun 8, 2023
  4

• Function arg type inference (incorrectly) unions with null but excludes others

  Duplicate
  microsoft/TypeScript#49850 · by Filter by author mikestopcontinues was closed on Jul 13, 2022
  5

• Spread operator should not have worse ergonomics than apply - unexpected error spreading a union-of-tuples

  Experimentation NeededSuggestion
  microsoft/TypeScript#49802 · Filter by author callionica opened on Jul 6, 2022
  16

• Conditional result is incorrect when providing generics parameters to a type within a class

  Question
  microsoft/TypeScript#49769 · by Filter by author igor-quotient was closed on Jul 9, 2022
  13

• Incorrect behavior of ArrayLike<infer T> | Iterable<infer T>?

  Working as Intended
  microsoft/TypeScript#49764 · by Filter by author graphemecluster was closed on Jul 10, 2022
  4

• Unexpected error when generic extends recursive type (alias vs interface).

  microsoft/TypeScript#49751 · by Filter by author miguel-leon was closed on Jul 1, 2022
  14

• [NewErrors] 4.8.0-dev.20220609 vs 4.7.3

  Discussion
  microsoft/TypeScript#49461 · by Filter by author typescript-bot was closed on Jun 10, 2022
  12

• Unsound handling of unions with multiple type variables (real this time)

  Working as Intended
  microsoft/TypeScript#49432 · by Filter by author mheiber was closed on Jun 11, 2022
  12

• Improve signature assignability for argument lists of different lengths

  For Backlog Bug
  Unread
  microsoft/TypeScript#49218·by Andarist was closed Mar 24, 2026
  86

  

• Improve intersection reduction and CFA for truthy, equality, and typeof checks

  Author: TeamBreaking ChangeFor Backlog BugFor Milestone Bug
  Unread
  microsoft/TypeScript#49119·by ahejlsberg was merged May 27, 2022
  91

  

• Enable extraction of type parameters.

  DeclinedSuggestion
  microsoft/TypeScript#49112 · by Filter by author lillallol was closed on May 18, 2022
  19

• TypeScript 4.8 Iteration Plan

  Planning
  microsoft/TypeScript#49074 · by Filter by author DanielRosenwasser was closed on Jan 5, 2024
  30

• Design Meeting Notes, 4/27/2022

  Design Notes
  microsoft/TypeScript#48957 · by Filter by author DanielRosenwasser was closed on Oct 26, 2023
  1

• Incorrent return type inference when using infer with generic function

  microsoft/TypeScript#48820 · by Filter by author user753 was closed on Apr 25, 2022
  9

• Generic Extended Types not inferring Correctly

  Question
  microsoft/TypeScript#48741 · by Filter by author jaredjbarnes was closed on Apr 18, 2022
  21

• Numeric template type can't be used to index tuple in mapped type (despite actually working anyway)

  Unactionable
  microsoft/TypeScript#48739 · by Filter by author Jamesernator was closed on Jun 8, 2023
  13

• [Feature Request] Proposal for type annotations as comments

  In DiscussionSuggestion
  microsoft/TypeScript#48650 · Filter by author matthew-dean opened on Apr 12, 2022
  66

• Tuple types are not indexed by number in mapped types

  FixedWorking as Intended
  microsoft/TypeScript#48398 · by Filter by author Jamesernator was closed on Mar 29, 2022
  8

• Conditional type prevents assignability

  BugDomain: Conditional TypesHelp Wanted
  microsoft/TypeScript#48033 · Filter by author dylhunn opened on Feb 25, 2022 · Backlog
  11

• Self mutating types

  Duplicate
  microsoft/TypeScript#47929 · by Filter by author didii was closed on Feb 17, 2022
  3