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Merge pull request #30963 from Microsoft/fixObjectFlagsPropagation

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Fix object flags propagation
This commit is contained in:
Anders Hejlsberg
2019-04-16 07:25:41 -10:00
committed by GitHub
parent ec70c80960 4668411464
commit f617d1641b
5 changed files with 135 additions and 1 deletions
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2
src/compiler/checker.ts
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@@ -14271,7 +14271,7 @@ namespace ts {
const result = createAnonymousType(type.symbol, members, emptyArray, emptyArray,
stringIndexInfo && createIndexInfo(getWidenedType(stringIndexInfo.type), stringIndexInfo.isReadonly),
numberIndexInfo && createIndexInfo(getWidenedType(numberIndexInfo.type), numberIndexInfo.isReadonly));
result.objectFlags |= (getObjectFlags(type) & ObjectFlags.JSLiteral); // Retain js literal flag through widening
result.objectFlags |= (getObjectFlags(type) & (ObjectFlags.JSLiteral | ObjectFlags.NonInferrableType)); // Retain js literal flag through widening
return result;
}