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Omit intersection property check when source includes target (#53012)

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This commit is contained in:
Anders Hejlsberg
2023-02-28 04:57:10 -10:00
committed by GitHub
parent e2283e99b4
commit 74814345ce
2 changed files with 4 additions and 4 deletions
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src/compiler/checker.ts
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@@ -21117,7 +21117,7 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
//
else if (result && isNonGenericObjectType(target) && !isArrayOrTupleType(target) &&
source.flags & TypeFlags.Intersection && getApparentType(source).flags & TypeFlags.StructuredType &&
!some((source as IntersectionType).types, t => !!(getObjectFlags(t) & ObjectFlags.NonInferrableType))) {
!some((source as IntersectionType).types, t => t === target || !!(getObjectFlags(t) & ObjectFlags.NonInferrableType))) {
result &= propertiesRelatedTo(source, target, reportErrors, /*excludedProperties*/ undefined, /*optionalsOnly*/ true, intersectionState);
}
}