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Diagnostic code 8030 being incorrectly generated using JSDoc @type on a function.

Status: Open.

#63754 In microsoft/TypeScript;

· Arashiryuu opened

on Aug 17, 2026

TypeScript doesn't add "node" to "types" in compilerOptions, even though node_modules/@types/node exists

Status: Open.

#63753 In microsoft/TypeScript;

· karl-police opened

on Aug 16, 2026

extraFileExtensions cannot declare an extension as TypeScript, so TS-flavoured files are charged to maxProgramSizeForNonTsFiles

Status: Open.

#63752 In microsoft/TypeScript;

·

Peter Wagenet (wagenet)

opened

on Aug 15, 2026

tsgo: parser nil-pointer panic when a JSDoc @overload tags an anonymous default-export function

BugA bug in TypeScript

Fix AvailableA PR has been opened for this issue

Status: Open.

#63750 In microsoft/TypeScript;

·

Johnson Chu (johnsoncodehk)

opened

on Aug 13, 2026

·

 

TypeScript 7.1

[7.0] Can't access field if it is protected in one constituent of an intersection (type order dependent)

BugA bug in TypeScript

Status: Open.

#63749 In microsoft/TypeScript;

·

Titian Cernicova-Dragomir (dragomirtitian)

opened

on Aug 13, 2026

·

 

Backlog

Update wiki "Using the Compiler API" for TypeScript v7

DocsThe issue relates to how you learn TypeScript

Fix AvailableA PR has been opened for this issue

Status: Open.

#63747 In microsoft/TypeScript;

·

David Dal Busco (peterpeterparker)

opened

on Aug 11, 2026

·

 

TypeScript 7.1

Project references resolve a symlinked sibling's raw source instead of its own composite output, using the wrong project's compilerOptions

Needs More InfoThe issue still hasn't been fully clarified

Status: Open.

#63743 In microsoft/TypeScript;

· DannKenn opened

on Aug 10, 2026

Rest-parameter mapped-type wrapping breaks tuple-literal inference once real-world complexity is added

Needs More InfoThe issue still hasn't been fully clarified

Status: Open.

#63742 In microsoft/TypeScript;

·

Brett Zamir (brettz9)

opened

on Aug 10, 2026

--incremental: after a pnpm dependency version change, the cached run is slower than a cold run and most of the time is unattributed

Fix AvailableA PR has been opened for this issue

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

Status: Open.

#63731 In microsoft/TypeScript;

· mushan0x0 opened

on Aug 7, 2026

·

 

TypeScript 7.1

importHelpers incorrectly requires tslib for native #private class members at every dated target (ES2022–ES2025), even though no helper is ever emitted

BugA bug in TypeScript

Domain: tslib and Helper Functions

Help WantedYou can do this

Status: Open.

#63728 In microsoft/TypeScript;

·

Andrew Stegmaier (astegmaier)

opened

on Aug 6, 2026

·

 

Backlog

Poorly formed output with JSDoc typedef

BugA bug in TypeScript

Domain: JSDocRelates to JSDoc parsing and type generation

Fix AvailableA PR has been opened for this issue

Status: Open.

#63726 In microsoft/TypeScript;

·

Brett Zamir (brettz9)

opened

on Aug 6, 2026

·

 

TypeScript 7.1

Type argument with a subset of the parameter constraint's optional keys incorrectly reported as unassignable to constraint

BugA bug in TypeScript

Domain: Mapped TypesThe issue relates to mapped types

Fix AvailableA PR has been opened for this issue

Status: Open.

#63725 In microsoft/TypeScript;

· aweebit opened

on Aug 6, 2026

·

 

Dormant