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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

Crash： when inferring from a tuple with middle rest elements and trailing variadic elements

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

Help WantedYou can do thisYou can do this

Status: Open.

#63005 In Microsoft/TypeScript;

· na7ure-a opened on Jan 17, 2026

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Backlog

Explicit <code>never</code> return type in <code>catch</code> block &amp; condition in <code>finally</code> marks the whole <code>finally</code> block as unreachable

BugA bug in TypeScriptA bug in TypeScript

Status: Open.

#63004 In Microsoft/TypeScript;

· d-fischer opened on Jan 17, 2026

·  

Backlog

Global 'this' capture logic is slightly wrong in <code>--noImplicitThis</code>

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

Status: Open.

#63001 In Microsoft/TypeScript;

· DanielRosenwasser opened on Jan 16, 2026

Crash: RangeError: Maximum call stack size exceeded in addTypesToUnion when using incomplete keyof type annotation on object destructuring

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

Help WantedYou can do thisYou can do this

Status: Open.

#62993 In Microsoft/TypeScript;

· na7ure-a opened on Jan 16, 2026

·  

Backlog

generics in constructor

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.

#62992 In Microsoft/TypeScript;

· y-nk opened on Jan 16, 2026