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typesctip 6 and package.json exports definitions

Status: Open.

#63318 In microsoft/TypeScript;

· darkship opened on Mar 29, 2026

Error type constructor

Status: Open.

#63315 In microsoft/TypeScript;

· masaeedu opened on Mar 28, 2026

Allow structural typing of prototypes

Awaiting More FeedbackThis means we'd like to hear from more people who would be helped by this featureThis means we'd like to hear from more people who would be helped by this feature

SuggestionAn idea for TypeScriptAn idea for TypeScript

Status: Open.

#63314 In microsoft/TypeScript;

· 5cover opened on Mar 28, 2026

Type of return value of yield cannot be inferred from explicitly declared TNext

Status: Open.

#63313 In microsoft/TypeScript;

· zimtsui opened on Mar 28, 2026

typescript.d.ts uses ES2015+ globals (Map, ReadonlyMap) without /// <reference lib> directive

Status: Open.

#63311 In microsoft/TypeScript;

· baraknaveh opened on Mar 28, 2026

Regression in 6.0: type inferred from const with broader type is too narrow

Status: Open.

#63309 In microsoft/TypeScript;

· trevorade opened on Mar 27, 2026

Custom syntax for distributive conditional

Awaiting More FeedbackThis means we'd like to hear from more people who would be helped by this featureThis means we'd like to hear from more people who would be helped by this feature

SuggestionAn idea for TypeScriptAn idea for TypeScript

Status: Open.

#63295 In microsoft/TypeScript;

· yarden-app opened on Mar 24, 2026

Removing optional modifier in a mapped type behaves inconsistently b/w array vs object

Needs InvestigationThis issue needs a team member to investigate its status.This issue needs a team member to investigate its status.

Status: Open.

#63291 In microsoft/TypeScript;

· juhort opened on Mar 24, 2026

RegExpIndicesArray - Named group indices can be undefined

Awaiting More FeedbackThis means we'd like to hear from more people who would be helped by this featureThis means we'd like to hear from more people who would be helped by this feature

SuggestionAn idea for TypeScriptAn idea for TypeScript

Status: Open.

#63281 In microsoft/TypeScript;

· TomStrepsil opened on Mar 22, 2026

[Localization] Misleading Chinese translation for TS2561 error message

BugA bug in TypeScriptA bug in TypeScript

Domain: Error MessagesThe issue relates to error messagingThe issue relates to error messaging

i18n(Ping PDostalek) Translation/Localization/Internationalization of messages in the compiler.(Ping PDostalek) Translation/Localization/Internationalization of messages in the compiler.

Status: Open.

#63274 In microsoft/TypeScript;

· HHaoWang opened on Mar 20, 2026

Crash: RangeError: Maximum call stack size exceeded in getNameOfSymbolAsWritten via recursive conditional ReturnType

BugA bug in TypeScriptA bug in TypeScript

Domain: check: Type Circularitystackoverflows caused by circularities, or unexpected errors where no circularity appears to existstackoverflows caused by circularities, or unexpected errors where no circularity appears to exist

Status: Open.

#63273 In microsoft/TypeScript;

· na7ure-a opened on Mar 20, 2026

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Backlog

Crash: RangeError: Invalid string length in addSpans during instantiation of recursive template literal types

BugA bug in TypeScriptA bug in TypeScript

Domain: CrashesUnhandled exceptions/panics with no immediate primary root cause identifiedUnhandled exceptions/panics with no immediate primary root cause identified

Status: Open.

#63271 In microsoft/TypeScript;

· na7ure-a opened on Mar 19, 2026

·  

Backlog