From 75ac6eb28442de54c646720890205d31e312e416 Mon Sep 17 00:00:00 2001
From: Collins Abitekaniza <abtcolns@gmail.com>
Date: Mon, 19 Aug 2019 03:10:08 +0300
Subject: [PATCH] restrict object spreading on unkown type

---
 src/compiler/checker.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/compiler/checker.ts b/src/compiler/checker.ts
index 1dc46fe9568..53f96d507b8 100644
--- a/src/compiler/checker.ts
+++ b/src/compiler/checker.ts
@@ -19878,7 +19878,7 @@ namespace ts {
                     return isValidSpreadType(constraint);
                 }
             }
-            return !!(type.flags & (TypeFlags.AnyOrUnknown | TypeFlags.NonPrimitive | TypeFlags.Object | TypeFlags.InstantiableNonPrimitive) ||
+            return !!(type.flags & (TypeFlags.Any | TypeFlags.NonPrimitive | TypeFlags.Object | TypeFlags.InstantiableNonPrimitive) ||
                 getFalsyFlags(type) & TypeFlags.DefinitelyFalsy && isValidSpreadType(removeDefinitelyFalsyTypes(type)) ||
                 type.flags & TypeFlags.UnionOrIntersection && every((<UnionOrIntersectionType>type).types, isValidSpreadType));
         }