From 34a55899bee19dcbb434754035080172e6c9ab52 Mon Sep 17 00:00:00 2001
From: Andy <anhans@microsoft.com>
Date: Wed, 16 Aug 2017 10:04:51 -0700
Subject: [PATCH] Remove unnecessary call to `getApparentType` (#17788)

---
 src/compiler/checker.ts | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/src/compiler/checker.ts b/src/compiler/checker.ts
index 4481531b598..47a5c6950d2 100644
--- a/src/compiler/checker.ts
+++ b/src/compiler/checker.ts
@@ -22918,10 +22918,7 @@ namespace ts {
                     // index access
                     if (node.parent.kind === SyntaxKind.ElementAccessExpression && (<ElementAccessExpression>node.parent).argumentExpression === node) {
                         const objectType = getTypeOfExpression((<ElementAccessExpression>node.parent).expression);
-                        if (objectType === unknownType) return undefined;
-                        const apparentType = getApparentType(objectType);
-                        if (apparentType === unknownType) return undefined;
-                        return getPropertyOfType(apparentType, (<NumericLiteral>node).text as __String);
+                        return getPropertyOfType(objectType, (<NumericLiteral>node).text as __String);
                     }
                     break;
             }