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Wrong result type for || or ?? operation for interface value and object of some other type structure

Status: Open.

#63018�?In microsoft/TypeScript;

· blazkovicz opened on Jan 20, 2026

Please search thoroughly in GitHub or by the query site:github.com/microsoft/TypeScript <your keywords> in your favorite search engine before reporting a new bug as most bugs are very likely to find precedents. Please fill in each section compl

Status: Open.

#63017�?In microsoft/TypeScript;

· vinitsati7-rgb opened on Jan 20, 2026

Add Scheduler API types

Status: Open.

#63016�?In microsoft/TypeScript;

· dislido opened on Jan 20, 2026

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

Status: Open.

#63015�?In microsoft/TypeScript;

· na7ure-a opened on Jan 20, 2026

> Nic nie ciekawi mnie bardziej niż zimna myszka.

Status: Open.

#63011�?In microsoft/TypeScript;

· mekrix777mekort-ops opened on Jan 18, 2026

"Conditionally optional" type works for concrete parameter but not generic

Status: Open.

#63007�?In microsoft/TypeScript;

· ianroberts opened on Jan 17, 2026

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

Status: Open.

#63005�?In microsoft/TypeScript;

· na7ure-a opened on Jan 17, 2026

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

Status: Open.

#63004�?In microsoft/TypeScript;

· d-fischer opened on Jan 17, 2026

[Typo] Possible typo in JSDoc string for <code>Math.trunc(…)</code> function (lib.es2015.core.d.ts)

Status: Open.

#63003�?In microsoft/TypeScript;

· MichaelZalla opened on Jan 17, 2026

create primitive to prevent one folder from importing from another

Status: Open.

#63002�?In microsoft/TypeScript;

· ORESoftware opened on Jan 17, 2026

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

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

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

· �?

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