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packageId is not set when calling resolveModuleName on a directory with an index.d.ts file in a dependency

Status: Open.

#63547 In microsoft/TypeScript;

· TheLazySquid opened on Jun 10, 2026

Duplicate function declarations in generated .d.ts for non-module JS files with allowJs + declaration

Status: Open.

#63546 In microsoft/TypeScript;

· LangLangBart opened on Jun 10, 2026

Missing contextual typing for object-literal callback parameter causes generic return type to fall back to unknown

Status: Open.

#63545 In microsoft/TypeScript;

· oe-andreas-soroko opened on Jun 10, 2026

Better ownership lint to eliminate ownership chaos for generated code

Needs ProposalThis issue needs a plan that clarifies the finer details of how it could be implemented.This issue needs a plan that clarifies the finer details of how it could be implemented.

SuggestionAn idea for TypeScriptAn idea for TypeScript

Status: Open.

#63540 In microsoft/TypeScript;

· loynoir opened on Jun 6, 2026

Design Meeting Notes, 2026-06-04

Design NotesNotes from our design meetingsNotes from our design meetings

Status: Open.

#63533 In microsoft/TypeScript;

· RyanCavanaugh opened on Jun 4, 2026

Declarations that shadow global Symbol break emit for using declarations

BugA bug in TypeScriptA bug in TypeScript

Domain: JS EmitThe issue relates to the emission of JavaScriptThe issue relates to the emission of JavaScript

Status: Open.

#63522 In microsoft/TypeScript;

· DanielRosenwasser opened on Jun 1, 2026

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Backlog

Font bug

Needs More InfoThe issue still hasn't been fully clarifiedThe issue still hasn't been fully clarified

Status: Open.

#63507 In microsoft/TypeScript;

· Liam1-dev opened on May 26, 2026

Wildcard package.json exports auto-import path does not apply traversal containment checks

BugA bug in TypeScriptA bug in TypeScript

Domain: LS: Auto-import

Status: Open.

#63499 In microsoft/TypeScript;

· zainnadeem786 opened on May 22, 2026

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Backlog

js/ts.preferences.autoImportFileExcludePatterns is not reflected promptly in IntelliSense suggestions

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

Status: Open.

#63498 In microsoft/TypeScript;

· heroboy opened on May 21, 2026

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Backlog

DOM: Element#matches() incorrectly narrows types

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

Help WantedYou can do thisYou can do this

Status: Open.

#63497 In microsoft/TypeScript;

· Derugon opened on May 20, 2026

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Backlog

ReadonlySet lacks documentation for has, forEach and size

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

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.

#63481 In microsoft/TypeScript;

· Bertie690 opened on May 15, 2026

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Backlog

default keyword is offered in expression-bodied arrow function completions

BugA bug in TypeScriptA bug in TypeScript

Domain: LS: Completion ListsThe issue relates to showing completion lists in an editorThe issue relates to showing completion lists in an editor

Status: Open.

#63463 In microsoft/TypeScript;

· DhineshPonnarasan opened on May 9, 2026

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Backlog