Issues

• No error when exporting from global augmentations

  Breaking ChangeBug
  microsoft/TypeScript#64152 · Filter by author DanielRosenwasser opened on Sep 3, 2026 · TypeScript 7.2.0 Beta
  

• .d.json.ts file (allowArbitraryExtensions) not working correctly when importing from ESM file with node16/nodenext module setting

  Breaking ChangeBugDomain: Node ESMRescheduled
  microsoft/TypeScript#57229 · Filter by author noinkling opened on Jan 30, 2024 · TypeScript 5.7.0
  4

  

• Enum with special numbers overwrites own value

  Breaking ChangeBugDomain: enum
  microsoft/TypeScript#48956 · Filter by author JacobLey opened on May 4, 2022 · TypeScript 5.4.0
  4

• Inconsistent parameter properties initialization order depending on the target syntax with useDefineForClassFields

  Breaking ChangeDomain: JS EmitRescheduled
  microsoft/TypeScript#45995 · Filter by author nicolo-ribaudo opened on Sep 21, 2021 · TypeScript 5.7.0
  8

  

• Symbol properties should not be exempt from excess property checks in presence of a string index signature

  Breaking ChangeBugDomain: check: Excess Property CheckingRescheduled
  microsoft/TypeScript#44794 · Filter by author DanielRosenwasser opened on Jun 28, 2021 · TypeScript 5.7.0
  4

  

• Cannot bracket-index into an object after checking it's existence on that object.

  Breaking Change
  microsoft/TypeScript#44117 · Filter by author h-joo opened on May 17, 2021
  4

  

• allowJs should default to true

  Breaking ChangeNeeds More InfoSuggestion
  microsoft/TypeScript#40345 · Filter by author sandersn opened on Sep 1, 2020 · Backlog
  1

  

• No error using imports/exports with --module=none and --target=es2015+

  Breaking ChangeBugDomain: ES ModulesRescheduled
  microsoft/TypeScript#39603 · Filter by author andrewbranch opened on Jul 14, 2020 · Backlog
  3

• Change Diagnostic.code to 'string | number'

  Breaking ChangeDomain: APIExperience EnhancementSuggestion
  microsoft/TypeScript#28911 · Filter by author ajafff opened on Dec 7, 2018 · Backlog
  3

• USVString type definition

  Awaiting More FeedbackBreaking ChangeDomain: lib.d.tsSuggestion
  microsoft/TypeScript#28775 · Filter by author hasbel opened on Nov 30, 2018
  7

• API: incorrect declarations in types.ts

  Breaking ChangeHelp WantedInfrastructure
  microsoft/TypeScript#24706 · Filter by author ajafff opened on Jun 5, 2018 · Backlog
  5

• Object.getPrototypeOf returns any instead of object | null

  Awaiting More FeedbackBreaking ChangeSuggestion
  microsoft/TypeScript#22875 · Filter by author cshaa opened on Mar 26, 2018
  5

• Decouple jsx element type from jsx factory return type and sfc return type

  Breaking ChangeDomain: JSX/TSXEffort: ModerateSuggestion
  microsoft/TypeScript#21699 · Filter by author weswigham opened on Feb 6, 2018 · Backlog
  123

• Try enforcing contextual type of array literal elements

  Breaking ChangeCommittedSuggestion
  microsoft/TypeScript#19541 · Filter by author RyanCavanaugh opened on Oct 27, 2017 · Backlog
  2

• Bug: Accessing private statics in a class via its derived class is allowed

  Breaking ChangeEffort: ModerateHelp WantedSuggestion
  microsoft/TypeScript#8624 · Filter by author JoshuaKGoldberg opened on May 16, 2016 · Backlog
  22