Consider annotated parameter with an initializer as optional when inferring from it #57708
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typescript-bot
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For Uncommitted Bug
Andarist
commented
Mar 9, 2024
src/compiler/checker.ts
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| @@ -36542,7 +36542,7 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker { | |||
| const declaration = signature.parameters[i].valueDeclaration as ParameterDeclaration; | |||
| const typeNode = getEffectiveTypeAnnotationNode(declaration); | |||
| if (typeNode) { | |||
| const source = addOptionality(getTypeFromTypeNode(typeNode), /*isProperty*/ false, isOptionalDeclaration(declaration)); | |||
| const source = addOptionality(getTypeFromTypeNode(typeNode), /*isProperty*/ false, hasInitializer(declaration) || isOptionalDeclaration(declaration)); | |||
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this matches the logic used by getTypeOfParameter
typescript-bot
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For Uncommitted Bug
…aram-with-initializer
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fixes #57706