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Type parameter leak caused by <code>this</code> and reverse mapped type

BugA bug in TypeScriptA bug in TypeScript

Help WantedYou can do thisYou can do this

Status: Open.

#62779�?In microsoft/TypeScript;

· Andarist opened on Nov 18, 2025

·�?

Backlog

Inconsistent object literal key completion for enum keys

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.

#62778�?In microsoft/TypeScript;

· sadan4 opened on Nov 18, 2025

Type narrowing error when <code>strictNullChecks: true</code>

Working as IntendedThe behavior described is the intended behavior; this is not a bugThe behavior described is the intended behavior; this is not a bug

Status: Open.

#62777�?In microsoft/TypeScript;

· davidjohnbell opened on Nov 18, 2025

tsserver can not support esm module plugin. "Skipped loading plugin xxx because it did not expose a proper factory function"

DuplicateAn existing issue was already createdAn existing issue was already created

Status: Open.

#62773�?In microsoft/TypeScript;

· ellis-zhou opened on Nov 18, 2025

"Move to file" Code Action/Hint triggers in an if statement in JS

BugA bug in TypeScriptA bug in TypeScript

Help WantedYou can do thisYou can do this

Status: Open.

#62780�?In microsoft/TypeScript;

· Chrysaloid opened on Nov 17, 2025

·�?

Backlog

Hover shows correct function type, but TS complains that parameters are <code>any</code>

DuplicateAn existing issue was already createdAn existing issue was already created

Status: Open.

#62772�?In microsoft/TypeScript;

· ZachHaber opened on Nov 17, 2025

"Lookup" Type Broken When Using Generics

Domain: Mapped TypesThe issue relates to mapped typesThe issue relates to mapped 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.

#62770�?In microsoft/TypeScript;

· awfulstew opened on Nov 17, 2025

·�?

Backlog

Error message language ambiguous and does not match the error category

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

Status: Open.

#62767�?In microsoft/TypeScript;

· kkmuffme opened on Nov 16, 2025

Unexpected distributive behaviour on type alias

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

Status: Open.

#62761�?In microsoft/TypeScript;

· realainov opened on Nov 14, 2025

Support inline refactoring for exported typescript variables

BugA bug in TypeScriptA bug in TypeScript

Domain: LS: Refactoringse.g. extract to constant or function, rename symbole.g. extract to constant or function, rename symbol

Status: Open.

#62771�?In microsoft/TypeScript;

· johndoknjas opened on Nov 14, 2025

·�?

Backlog

Strongly typed TypedArray values

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.

#62752�?In microsoft/TypeScript;

· aapoalas opened on Nov 13, 2025

Access base class protected methods in static block

BugA bug in TypeScriptA bug in TypeScript

Domain: classesBehavior of various `class` constructs, e.g. mixins or base classesBehavior of various `class` constructs, e.g. mixins or base classes

Help WantedYou can do thisYou can do this

Status: Open.

#62738�?In microsoft/TypeScript;

· dotlogix opened on Nov 9, 2025

·�?

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