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Removing duplicated code

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This commit is contained in:
navya9singh
2022-09-15 15:56:31 -07:00
parent cd312d3076
commit ba10a0d7c0
1 changed files with 9 additions and 4 deletions
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src/compiler/checker.ts
+9 -4
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@@ -15589,10 +15589,15 @@ m2: ${(this.mapper2 as unknown as DebugTypeMapper).__debugToString().split("\n")
return accessFlags & AccessFlags.IncludeUndefined ? getUnionType([indexInfo.type, undefinedType]) : indexInfo.type;
}
errorIfWritingToReadonlyIndex(indexInfo);
if (accessFlags & AccessFlags.IncludeUndefined) {
if (objectType.symbol && objectType.symbol.flags & (SymbolFlags.RegularEnum | SymbolFlags.ConstEnum) && (indexType.symbol && indexType.flags & TypeFlags.EnumLiteral && getParentOfSymbol(indexType.symbol) === objectType.symbol)) {
return indexInfo.type;
}
// When accessing an enum object with its own type,
// e.g. E[E.A] for enum E { A }, undefined shouldn't
// be included in the result type
if ((accessFlags & AccessFlags.IncludeUndefined) &&
!(objectType.symbol &&
objectType.symbol.flags & (SymbolFlags.RegularEnum | SymbolFlags.ConstEnum) &&
(indexType.symbol &&
indexType.flags & TypeFlags.EnumLiteral &&
getParentOfSymbol(indexType.symbol) === objectType.symbol))) {
return getUnionType([indexInfo.type, undefinedType]);
}
return indexInfo.type;