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1 parent 9c3c2ad commit a5d6be1Copy full SHA for a5d6be1
src/compiler/checker.ts
@@ -12725,7 +12725,7 @@ namespace ts {
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function narrowByInKeyword(type: Type, literal: LiteralExpression, assumeTrue: boolean) {
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if ((type.flags & (TypeFlags.Union | TypeFlags.Object)) || (type.flags & TypeFlags.TypeParameter && (type as TypeParameter).isThisType)) {
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const propName = literal.text;
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- return filterType(type, t => !!getPropertyOfType(t, propName) === assumeTrue);
+ return filterType(type, t => !!getPropertyOfType(t, propName) === assumeTrue);
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}
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return type;
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