Issues

• Parameters created from tuple are treated as mutable instead of immutable, unless written as "...args"

  BugDomain: check: Type InferenceRescheduled
  microsoft/TypeScript#53255 · Filter by author jakebailey opened on Mar 14, 2023 · TypeScript 5.7.0
  4

  

• Literals that are spread into a const rest are not const-ified

  Needs Investigation
  microsoft/TypeScript#53177 · by Filter by author Andarist was closed on Mar 9, 2023
  3

  

• Exhaustive array on union type

  microsoft/TypeScript#53171 · by Filter by author mrjacobbloom was closed on Mar 10, 2023
  5

• Use homomorphic templated type for Omit

  For Milestone Bug
  Unread
  microsoft/TypeScript#53110·by Andarist was closed Mar 17, 2023
  27

  

• Each tuple member type becomes union of all tuple member types when intersection with object

  Needs More Info
  microsoft/TypeScript#53091 · by Filter by author btakita was closed on Aug 7, 2024
  3

• Partial type assertions

  Duplicate
  microsoft/TypeScript#53061 · by Filter by author geoffreytools was closed on Mar 5, 2023
  12

• Improve contextual typing of ending tuple elements

  Author: TeamFor Milestone Bug
  Unread
  microsoft/TypeScript#53036·by ahejlsberg was merged Mar 19, 2023
  16

  

• Infer type parameters from indexes on those parameters

  For Backlog Bug
  Unread
  microsoft/TypeScript#53017·by Andarist was closed Mar 24, 2026
  56

  

• Narrow type of constructor.name

  microsoft/TypeScript#52909 · by Filter by author Zamiell was closed on Feb 22, 2023
  3

• Handle multiple levels of substitutions and indexed accesses in getActualTypeVariable

  Author: TeamFor Milestone Bug
  Unread
  microsoft/TypeScript#52848·by jakebailey was merged Feb 21, 2023
  16

  

• Fixed array expression spreads into variadic const calls

  For Backlog Bug
  Unread
  microsoft/TypeScript#52845·by Andarist was merged Mar 8, 2023
  25

  

• Fixed spreading iterables into arguments list directly into rest-only signatures

  For Backlog Bug
  Unread
  microsoft/TypeScript#52838·by Andarist was merged Mar 2, 2023
  28

  

• Fix contextual typing for post-spread tuple elements

  Author: TeamFor Milestone Bug
  Unread
  microsoft/TypeScript#52769·by ahejlsberg was merged Feb 18, 2023
  25

  

• Callback parameter type is any for union of arrays

  Working as Intended
  microsoft/TypeScript#52748 · by Filter by author steverep was closed on Feb 17, 2023
  26

• Infer types from mapped properties other than the mapped type itself

  For Backlog Bug
  Unread
  microsoft/TypeScript#52737·by Andarist was closed Mar 24, 2026
  34

  

• False-positive errors regarding string array const

  BugFix Available
  microsoft/TypeScript#52684 · by Filter by author mocanew was closed on Feb 18, 2023 · TypeScript 5.0.1
  3

  

• Type guard is not working with noUncheckedIndexedAccess and destructuring

  Duplicate
  microsoft/TypeScript#52623 · by Filter by author PunGy was closed on Feb 16, 2023
  4

• Promise.all sometimes infers incorrect types

  Not a Defect
  microsoft/TypeScript#52601 · by Filter by author JavaScriptBach was closed on Jan 30, 2026
  11

• Contextual type for an array element doesn't filter out non-array union members

  Experience EnhancementSuggestion
  microsoft/TypeScript#52588 · by Filter by author Andarist was closed on Mar 10, 2023 · Backlog
  1

• Include type literals and array literals / tuples elements in navigation bar / tree

  For Uncommitted Bug
  Unread
  microsoft/TypeScript#52558·by zardoy was closed Mar 8, 2023
  3

  

• Navigation tree overhaul

  Needs ProposalSuggestion
  microsoft/TypeScript#52557 · by Filter by author zardoy was closed on Dec 11, 2024
  3

  

• Equivalent Tuple with Rest types not duck-typing properly

  Suggestion
  microsoft/TypeScript#52496 · Filter by author eranhirsch opened on Jan 30, 2023
  2

• Make getTypeOfSymbol, isArrayType, isTupleType public on TypeChecker

  Author: TeamFor Uncommitted Bug
  Unread
  microsoft/TypeScript#52467·by jakebailey was merged Feb 2, 2023
  9

  

• In tsc --b mode detect if root file of compilation is not root any more

  Author: TeamFor Uncommitted Bug
  Unread
  microsoft/TypeScript#52417·by sheetalkamat was merged Jan 27, 2023
  16

  

• Normalize generic tuple types with Simplifiable elements

  For Backlog Bug
  Unread
  microsoft/TypeScript#52385·by Andarist was merged Mar 20, 2023
  23