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BugA bug in TypeScript A bug in TypeScript

Help WantedYou can do this You can do this

Status: Open.

#62609 In microsoft/TypeScript;

· aiday-mar opened on Oct 16, 2025

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Backlog

Typescript Type Resolution Fails with generics of T | null

Status: Open.

#62608 In microsoft/TypeScript;

· adminnz opened on Oct 16, 2025

Changing property declaration order causes error

BugA bug in TypeScript A bug in TypeScript

Domain: Variance RelationshipsThe issue relates to variance relationships between types The issue relates to variance relationships between types

Fix AvailableA PR has been opened for this issue A PR has been opened for this issue

Status: Open.

#62606 In microsoft/TypeScript;

· ahejlsberg opened on Oct 15, 2025

Unexpected error message when assigning object values with wider discriminator property type

Not a DefectThis behavior is one of several equally-correct options This behavior is one of several equally-correct options

Status: Open.

#62603 In microsoft/TypeScript;

· janpaepke opened on Oct 15, 2025

JSDoc/TSDoc <code>@link</code> hover for same-file symbols drops <code>@remarks</code> and all tags from Quick Info

Domain: Quick Infoe.g. hover text, tool-tips, and tooltips. e.g. hover text, tool-tips, and tooltips.

Help WantedYou can do this You can do this

Possible ImprovementThe current behavior isn't wrong, but it's possible to see that it might be better in some cases The current behavior isn't wrong, but it's possible to see that it might be better in some cases

Status: Open.

#62602 In microsoft/TypeScript;

· dkamins opened on Oct 15, 2025

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Backlog

Variables strictly typed as numbers behave as strings on sum operation

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

Status: Open.

#62596 In microsoft/TypeScript;

· alexxppp opened on Oct 14, 2025

Compiler option to define output-to-input directory map for module resolution of package.json <code>"imports"</code>/<code>"exports"</code>

Awaiting More FeedbackThis means we'd like to hear from more people who would be helped by this feature This means we'd like to hear from more people who would be helped by this feature

SuggestionAn idea for TypeScript An idea for TypeScript

Status: Open.

#62591 In microsoft/TypeScript;

· 8ctavio opened on Oct 13, 2025

Experimental TypeScript fork with operator overloading and overload dispatch—documenting a working implementation

DiscussionIssues which may not have code impact Issues which may not have code impact

Status: Open.

#62584 In microsoft/TypeScript;

· adrianstephens opened on Oct 10, 2025

Design Meeting Notes, 9/9/2025

Design NotesNotes from our design meetings Notes from our design meetings

Status: Open.

#62583 In microsoft/TypeScript;

· DanielRosenwasser opened on Oct 10, 2025

The <code>@ts-ignore</code> vs. <code>@ts-expect-error</code> Dilemma: Missing a Warning-Only Redundancy Check

Awaiting More FeedbackThis means we'd like to hear from more people who would be helped by this feature This means we'd like to hear from more people who would be helped by this feature

SuggestionAn idea for TypeScript An idea for TypeScript

Status: Open.

#62579 In microsoft/TypeScript;

· bent0b0x opened on Oct 10, 2025

Array.from(it: Iterable&lt;X&gt; | Iterable&lt;Y&gt;) fails; [...it] works but returns Array&lt;X | Y&gt;; both should return Array&lt;X&gt; | Array&lt;Y&gt;

Awaiting More FeedbackThis means we'd like to hear from more people who would be helped by this feature This means we'd like to hear from more people who would be helped by this feature

SuggestionAn idea for TypeScript An idea for TypeScript

Status: Open.

#62576 In microsoft/TypeScript;

· gormster opened on Oct 10, 2025

Destructuring all but one key dynamically via rest creates an unusable type by omitting all of its keys

Domain: Mapped TypesThe issue relates to mapped types The issue relates to mapped types

Experimentation NeededSomeone needs to try this out to see what happens Someone needs to try this out to see what happens

Possible ImprovementThe current behavior isn't wrong, but it's possible to see that it might be better in some cases The current behavior isn't wrong, but it's possible to see that it might be better in some cases

Status: Open.

#62572 In microsoft/TypeScript;

· branson-dyer opened on Oct 9, 2025

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Backlog