From c52eb6cef3fc149b5e5729de5b2ed11e72e11cab Mon Sep 17 00:00:00 2001
From: Anders Hejlsberg <andersh@microsoft.com>
Date: Sun, 4 Dec 2016 07:43:10 -0800
Subject: [PATCH] Indexed access any[K] has type any

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

diff --git a/src/compiler/checker.ts b/src/compiler/checker.ts
index 912db011904..903c8cfda1c 100644
--- a/src/compiler/checker.ts
+++ b/src/compiler/checker.ts
@@ -6033,6 +6033,9 @@ namespace ts {
 
         function getIndexedAccessType(objectType: Type, indexType: Type, accessNode?: ElementAccessExpression | IndexedAccessTypeNode) {
             if (maybeTypeOfKind(indexType, TypeFlags.TypeVariable | TypeFlags.Index) || isGenericMappedType(objectType)) {
+                if (objectType.flags & TypeFlags.Any) {
+                    return objectType;
+                }
                 // If the index type is generic or if the object type is a mapped type with a generic constraint,
                 // we are performing a higher-order index access where we cannot meaningfully access the properties
                 // of the object type. In those cases, we first check that the index type is assignable to 'keyof T'