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Typescript does not recognize undefined check with nested property called by an enum.

Status: Open.

#62749�?In microsoft/TypeScript;

· JD2k opened on Nov 12, 2025

No NewErrors issue since 2025-11-05

Status: Open.

#62745�?In microsoft/TypeScript;

· github-actions opened on Nov 12, 2025

<code>is not</code> in type predicates + partial checking for object types.

DuplicateAn existing issue was already createdAn existing issue was already created

Status: Open.

#62742�?In microsoft/TypeScript;

· erfankorki opened on Nov 9, 2025

Access base class protected methods in static block

BugA bug in TypeScriptA bug in TypeScript

Help WantedYou can do thisYou can do this

Status: Open.

#62738�?In microsoft/TypeScript;

· dotlogix opened on Nov 9, 2025

·�?

Backlog

Directory junction child renamed, imports update automatically but then have errors until restart

Status: Open.

#62744�?In microsoft/TypeScript;

· BrodBlox09 opened on Nov 8, 2025

Show incompatible union members in discriminated union discriminator errors

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

Help WantedYou can do thisYou can do this

SuggestionAn idea for TypeScriptAn idea for TypeScript

Status: Open.

#62737�?In microsoft/TypeScript;

· janpaepke opened on Nov 8, 2025

·�?

Backlog

Incorrect type inference for prototype

Status: Open.

#62736�?In microsoft/TypeScript;

· niuheshui opened on Nov 8, 2025

Limitation with exhaustiveness checking in if statements

DuplicateAn existing issue was already createdAn existing issue was already created

Status: Open.

#62735�?In microsoft/TypeScript;

· RodrigoFerretti opened on Nov 8, 2025

Separate JSX/TSX from React and present it as a general XML-in-JS solution

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

SuggestionAn idea for TypeScriptAn idea for TypeScript

Status: Open.

#62721�?In microsoft/TypeScript;

· Gwynerva opened on Nov 5, 2025

Conditional type inference fails when generic parameter has Readonly&lt;T&gt; in function parameter position

BugA bug in TypeScriptA bug in TypeScript

Domain: Conditional TypesThe issue relates to conditional typesThe issue relates to conditional types

Help WantedYou can do thisYou can do this

Status: Open.

#62720�?In microsoft/TypeScript;

· privatenumber opened on Nov 5, 2025

·�?

Backlog

Inconsistencies in assignability rules around top-level-like signatures

Cursed?It's likely this is extremely difficult to fix without making something else much, much worseIt's likely this is extremely difficult to fix without making something else much, much worse

Domain: check: Variance RelationshipsThe issue relates to variance relationships between typesThe issue relates to variance relationships between types

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.

#62712�?In microsoft/TypeScript;

· Andarist opened on Nov 3, 2025

·�?

Backlog

Autocomplete of bracket property doesn't work with <code>useState</code>

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

Status: Open.

#62723�?In microsoft/TypeScript;

· vbeffa opened on Nov 3, 2025