Search results

Is <code>class A extends (B&lt;T&gt;)&lt;T&gt; {}</code> valid code?

Status: Open.

#63065 In microsoft/TypeScript;

· fisker opened on Jan 29, 2026

Request to Participate and Share Academic Survey on Code Review in OSS Security

Status: Open.

#63062 In microsoft/TypeScript;

· morshedniaz opened on Jan 28, 2026

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

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>)

Status: Open.

#63059 In microsoft/TypeScript;

· jcalz opened on Jan 28, 2026

Partial&lt;&gt; with generics is throwing: Type 'xxx' is not assignable to type 'Partial&lt;T&gt;'.

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

Status: Open.

#63058 In microsoft/TypeScript;

· jozefchutka opened on Jan 28, 2026

tsgo fails to report TS2769 for mutually-exclusive object overloads

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

Status: Open.

#63050 In microsoft/TypeScript;

· devanshj opened on Jan 25, 2026

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

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

Status: Open.

#63039 In microsoft/TypeScript;

· KnorpelSenf opened on Jan 22, 2026

Autocomplete incorrectly suggests transitive files from monorepo package

Status: Open.

#63033 In microsoft/TypeScript;

· ericnorris opened on Jan 22, 2026

Regression: Generic function returning union of tuples is not assignable to identical type since v4.2

Status: Open.

#63019 In microsoft/TypeScript;

· ikeyan opened on Jan 20, 2026

Regression Crash: RangeError: Maximum call stack size exceeded in isThisInTypeQuery on Nightly

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

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

Status: Open.

#63015 In microsoft/TypeScript;

· na7ure-a opened on Jan 20, 2026

·  

TypeScript 6.0.0