From cd312d3076c054cdf9ed6f33c2d3e3995bca92eb Mon Sep 17 00:00:00 2001
From: navya9singh <navyasingh@microsoft.com>
Date: Wed, 31 Aug 2022 13:13:29 -0700
Subject: [PATCH] Managing control flow

---
 src/compiler/checker.ts | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/src/compiler/checker.ts b/src/compiler/checker.ts
index 679e79ded0c1a..f5e29d66dc181 100644
--- a/src/compiler/checker.ts
+++ b/src/compiler/checker.ts
@@ -15589,12 +15589,13 @@ 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 && objectType.symbol && objectType.symbol.flags & (SymbolFlags.RegularEnum | SymbolFlags.ConstEnum)) {
-                        if (indexType.symbol && indexType.flags & TypeFlags.EnumLiteral && getParentOfSymbol(indexType.symbol) === objectType.symbol) {
+                    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;
                         }
+                        return getUnionType([indexInfo.type, undefinedType]);
                     }
-                    return accessFlags & AccessFlags.IncludeUndefined ? getUnionType([indexInfo.type, undefinedType]) : indexInfo.type;
+                    return indexInfo.type;
                 }
                 if (indexType.flags & TypeFlags.Never) {
                     return neverType;