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Exclude arrays and tuples from full intersection property check

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This commit is contained in:
Anders Hejlsberg
2020-05-07 10:14:29 -07:00
parent 2524fb164a
commit 6fe4be21e4
1 changed files with 1 additions and 1 deletions
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src/compiler/checker.ts
+1 -1
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@@ -15874,7 +15874,7 @@ namespace ts {
// recursive intersections that are structurally similar but not exactly identical. See #37854.
if (result && !inPropertyCheck && (
target.flags & TypeFlags.Intersection && (isPerformingExcessPropertyChecks || isPerformingCommonPropertyChecks) ||
isNonGenericObjectType(target) && source.flags & TypeFlags.Intersection && getApparentType(source).flags & TypeFlags.StructuredType && !some((<IntersectionType>source).types, t => !!(getObjectFlags(t) & ObjectFlags.NonInferrableType)))) {
isNonGenericObjectType(target) && !isArrayType(target) && !isTupleType(target) && source.flags & TypeFlags.Intersection && getApparentType(source).flags & TypeFlags.StructuredType && !some((<IntersectionType>source).types, t => !!(getObjectFlags(t) & ObjectFlags.NonInferrableType)))) {
inPropertyCheck = true;
result &= recursiveTypeRelatedTo(source, target, reportErrors, IntersectionState.PropertyCheck);
inPropertyCheck = false;