Search results

Crash: RangeError: Maximum call stack size exceeded during type serialization of recursive distributive mapped types

Status: Open.

#63090 In microsoft/TypeScript;

· na7ure-a opened on Feb 4, 2026

Function property in union does not get parameter type inferred from result of type narrowing

Status: Open.

#63088 In microsoft/TypeScript;

· dyantako opened on Feb 4, 2026

TypeScript 6.0 Iteration Plan

PlanningIteration plans and roadmappingIteration plans and roadmapping

Status: Open.

#63085 In microsoft/TypeScript;

· DanielRosenwasser opened on Feb 3, 2026

Add support for OSC8 hyperlinks in TTY output

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.

#63082 In microsoft/TypeScript;

· matthieusieben opened on Feb 3, 2026

<code>x is any</code> type guard widens <code>unknown</code> type even after the relevant scope has been exited

Not a DefectThis behavior is one of several equally-correct optionsThis behavior is one of several equally-correct options

Status: Open.

#63074 In microsoft/TypeScript;

· coreywoodfield opened on Jan 31, 2026

Make standard library types more polyfills‑friendly

Domain: lib.d.tsThe issue relates to the different libraries shipped with TypeScriptThe issue relates to the different libraries shipped with TypeScript

In DiscussionNot yet reached consensusNot yet reached consensus

SuggestionAn idea for TypeScriptAn idea for TypeScript

Status: Open.

#63069 In microsoft/TypeScript;

· slowcheetah opened on Jan 30, 2026

<code>export type</code> vs <code>export { type }</code> with augmentations

Not a DefectThis behavior is one of several equally-correct optionsThis behavior is one of several equally-correct options

Status: Open.

#63061 In microsoft/TypeScript;

· skirtles-code opened on Jan 28, 2026

Narrow object property indexed by another object's property of unique symbol type (like <code>Symbol.iterator</code>)

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.

#63059 In microsoft/TypeScript;

· jcalz opened on Jan 28, 2026

tsgo fails to report TS2769 for mutually-exclusive object overloads

BugA bug in TypeScriptA bug in TypeScript

CorsaThis issue also exists in the typescript-go AKA TS 7.0 AKA Corsa implementationThis issue also exists in the typescript-go AKA TS 7.0 AKA Corsa implementation

Domain: check: Type InferenceRelated to type inference performed during signature resolution or `infer` type resolutionRelated to type inference performed during signature resolution or `infer` type resolution

Status: Open.

#63051 In microsoft/TypeScript;

· r253hmdryou opened on Jan 25, 2026

Double error message when referencing variable of type union of string literals from ambient declaration

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

Fix AvailableA PR has been opened for this issueA PR has been opened for this issue

Help WantedYou can do thisYou can do this

Possible ImprovementThe current behavior isn't wrong, but it's possible to see that it might be better in some casesThe current behavior isn't wrong, but it's possible to see that it might be better in some cases

Status: Open.

#63050 In microsoft/TypeScript;

· devanshj opened on Jan 25, 2026

·  

Dormant

RangeError: Maximum call stack size exceeded in getTypeFromTypeNode when resolving recursive tuple rest with intersection

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.

#63040 In microsoft/TypeScript;

· na7ure-a opened on Jan 23, 2026

Regression of <code>this is</code> type predicate for intersection of unions from 4.7 to 4.8

BugA bug in TypeScriptA bug in TypeScript

Domain: This-TypingThe issue relates to providing types to thisThe issue relates to providing types to this

Status: Open.

#63039 In microsoft/TypeScript;

· KnorpelSenf opened on Jan 22, 2026

·  

Backlog