Issues

• Type inference for rest parameters does not work

  Working as Intended
  microsoft/TypeScript#41064 · by Filter by author ezsh was closed on Oct 17, 2020
  19

• Can't index object in generic function with property name extracted with Pick from derived type

  Design Limitation
  microsoft/TypeScript#40832 · by Filter by author popadi was closed on Jun 1, 2021
  2

• Infer return type of function based on safe guard

  Working as Intended
  microsoft/TypeScript#40802 · by Filter by author Fuzzyma was closed on Oct 1, 2020
  3

• Unnormalized template literal types

  Needs ProposalSuggestion
  microsoft/TypeScript#40731 · Filter by author tpict opened on Sep 24, 2020
  7

• Inconsistent inference behaviour on union types

  Working as Intended
  microsoft/TypeScript#40665 · by Filter by author mikearnaldi was closed on Sep 24, 2020
  18

• Array#map() is not callable on type-guarded array

  Has ReproNeeds InvestigationRescheduled
  microsoft/TypeScript#40463 · by Filter by author saschanaz was closed on Aug 27, 2021 · TypeScript 4.4.1 (RC)
  5

  

• Constructor generic types and this parameter (TS1092, TS2681)

  In DiscussionSuggestion
  microsoft/TypeScript#40451 · Filter by author nebkat opened on Sep 9, 2020
  9

• Possible regression in conditional types using typescript@4.0.2

  Working as Intended
  microsoft/TypeScript#40182 · by Filter by author traverse was closed on Oct 22, 2020 · TypeScript 4.1.0
  1

  

• TS ^4 does not recognize array methods on (T[] | T[][]) as callable

  Breaking ChangeWorking as Intended
  microsoft/TypeScript#40157 · by Filter by author dkamyshov was closed on Aug 23, 2020
  7

  

• Generics interface conditional type

  Question
  microsoft/TypeScript#40104 · by Filter by author mokeyish was closed on Aug 19, 2020
  6

• Using 'Key in keyof ArrayType' always returns an Array regardles of the value manipulation applied

  Needs Investigation
  microsoft/TypeScript#40069 · Filter by author KilianKilmister opened on Aug 15, 2020 · Backlog
  4

• Generic interface with a union type involving a generic function causes problems with unknown

  Working as Intended
  microsoft/TypeScript#39843 · by Filter by author zeddic was closed on Aug 23, 2020
  3

• Checking is slow in project consuming xstate types

  Domain: Performance
  microsoft/TypeScript#39826 · by Filter by author amcasey was closed on Aug 4, 2020
  46

  

• Spreading tuple into generic/type arguments

  In DiscussionSuggestion
  microsoft/TypeScript#39648 · Filter by author MatthiasKunnen opened on Jul 18, 2020
  8

• Support inferring rest args that are not at the end of the function's args

  BugFix Available
  microsoft/TypeScript#39595 · by Filter by author dantman was closed on Jan 5, 2021 · TypeScript 4.2.0
  9

  

• Ability to replace return type of function type

  Awaiting More FeedbackSuggestion
  microsoft/TypeScript#39594 · Filter by author justinfagnani opened on Jul 14, 2020
  5

• Remove assignability cases in getNarrowedType + an isArray improvement for readonly arrays

  Author: TeamBreaking ChangeFor Milestone Bug
  Unread
  microsoft/TypeScript#39258·by orta was merged Sep 8, 2020
  33

  

• 'get' and 'set' accessors cannot declare 'this' parameters.

  Question
  microsoft/TypeScript#39254 · by Filter by author rgbui was closed on Jun 30, 2020
  16

• Variadic tuple types

  Author: TeamFor Milestone Bug
  Unread
  microsoft/TypeScript#39094·by ahejlsberg was merged Jun 23, 2020
  95

  

• Design Meeting Notes, 6/5/2020

  Design Notes
  microsoft/TypeScript#38951 · by Filter by author DanielRosenwasser was closed on Jul 17, 2020
  1

• JSDoc missing syntax for new Map<string, string>()

  In DiscussionSuggestion
  microsoft/TypeScript#38876 · Filter by author Raynos opened on Jun 1, 2020
  3

• [Bug] Generic type extending an Array can not be used as rest params

  Duplicate
  microsoft/TypeScript#38767 · by Filter by author bogdan was closed on May 26, 2020
  1

• Iterating through object and assigning to its properties leads to 'never'

  Duplicate
  microsoft/TypeScript#38735 · by Filter by author DzmVasileusky was closed on Jun 13, 2020
  3

• More invalid JSDoc generate cases

  Bug
  microsoft/TypeScript#38626 · by Filter by author Jack-Works was closed on Jun 10, 2020 · TypeScript 4.0.0
  2

  

• Object.values and Object.entries are unsound and inconsistent with Object.keys.

  Awaiting More FeedbackSuggestion
  microsoft/TypeScript#38520 · Filter by author MicahZoltu opened on May 13, 2020
  30