Replace only local type parameters with any when creating prototype property type of a class
#57323
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…e` property type of a class
typescript-bot
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For Uncommitted Bug
Andarist
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Feb 7, 2024
src/compiler/checker.ts
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| @@ -10701,7 +10701,7 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker { | |||
| // the type of which is an instantiation of the class type with type Any supplied as a type argument for each type parameter. | |||
| // It is an error to explicitly declare a static property member with the name 'prototype'. | |||
| const classType = getDeclaredTypeOfSymbol(getParentOfSymbol(prototype)!) as InterfaceType; | |||
| return classType.typeParameters ? createTypeReference(classType as GenericType, map(classType.typeParameters, _ => anyType)) : classType; | |||
| return classType.localTypeParameters ? createTypeReference(classType as GenericType, concatenate(classType.outerTypeParameters, map(classType.localTypeParameters, _ => anyType))) : classType; | |||
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I wonder if this doesn't create any type parameter leak or something like this but so far I couldn't recognize any unintended side-effect like this here.
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…yify-only-local-type-params # Conflicts: # tests/baselines/reference/accessorsOverrideProperty9.types # tests/baselines/reference/amdDeclarationEmitNoExtraDeclare.types # tests/baselines/reference/anonClassDeclarationEmitIsAnon.types # tests/baselines/reference/baseConstraintOfDecorator.types # tests/baselines/reference/declarationEmitLocalClassDeclarationMixin.types # tests/baselines/reference/declarationEmitPrivateNameCausesError.types # tests/baselines/reference/doubleMixinConditionalTypeBaseClassWorks.types # tests/baselines/reference/emitClassExpressionInDeclarationFile.types # tests/baselines/reference/emitClassExpressionInDeclarationFile2.types # tests/baselines/reference/exportClassExtendingIntersection.types # tests/baselines/reference/mixinAbstractClasses.2.types # tests/baselines/reference/mixinAbstractClasses.types # tests/baselines/reference/mixinAbstractClassesReturnTypeInference.types # tests/baselines/reference/mixinClassesAnnotated.types # tests/baselines/reference/mixinClassesAnonymous.types # tests/baselines/reference/mixinIntersectionIsValidbaseType.types # tests/baselines/reference/mixinOverMappedTypeNoCrash.types # tests/baselines/reference/mixinPrivateAndProtected.types # tests/baselines/reference/mixingApparentTypeOverrides.types # tests/baselines/reference/noCrashOnMixin.types # tests/baselines/reference/overrideBaseIntersectionMethod.types # tests/baselines/reference/typeAliasFunctionTypeSharedSymbol.types
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fixes #57317
this is different from #49863 - that PR likely still has a bug that I'm fixing here because it would replace the outer type parameter with its constraint