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Crash: Debug Failure. type must be class or interface in getBaseTypes triggered by invalid optional rest parameter in Constructor type

Status: Open.

#62921 In microsoft/TypeScript;

· na7ure-a opened on Dec 22, 2025

Crash: TypeError: Cannot read properties of undefined (reading 'kind') in checkPropertyAccessibility when using abstract in Class Expression

Status: Open.

#62920 In microsoft/TypeScript;

· na7ure-a opened on Dec 22, 2025

Feature: Const-literal typing for import-attribute imports

Status: Open.

#62919 In microsoft/TypeScript;

· sinclairzx81 opened on Dec 22, 2025

Passing <code>this</code> from a constructor before all fields are set introduces <code>undefined</code>s in some cases

Status: Open.

#62917 In microsoft/TypeScript;

· Taureon opened on Dec 21, 2025

[help] tsc "ignoreDeprecations": "6.0"

Status: Open.

#62916 In microsoft/TypeScript;

· cinast opened on Dec 21, 2025

Document that compiler.extends can be an array

Status: Open.

#62915 In microsoft/TypeScript;

· aryzing opened on Dec 20, 2025

Incorrect rename refactoring in object destructuring

Status: Open.

#62913 In microsoft/TypeScript;

· dbaeumer opened on Dec 19, 2025

<code>as</code> type assertion fails for <code>ReadonlyArray&lt;T&gt;</code> but succeeds for <code>T[]</code> with identical object literal

Status: Open.

#62910 In microsoft/TypeScript;

· raymondwang opened on Dec 18, 2025

Incorrect type narrowing with async/await

Status: Open.

#62908 In microsoft/TypeScript;

· RareScrap opened on Dec 18, 2025

Spreading object with optional property causes incorrect type inference when <code>exactOptionalPropertyTypes = false</code>

Status: Open.

#62906 In microsoft/TypeScript;

· ptandler opened on Dec 17, 2025

Provide a new, simple 'browser' moduleResolution mode for Browser, ESM-based, non-bundled projects.

Status: Open.

#62905 In microsoft/TypeScript;

· freshp86 opened on Dec 17, 2025

erasableSyntaxOnly: support commonjs require/exports in .cts files

Status: Open.

#62903 In microsoft/TypeScript;

· Knagis opened on Dec 16, 2025