From b883a82f9f9447bdbfa98032abe5140b8387368f Mon Sep 17 00:00:00 2001
From: Vimal Raghubir <vraghubir0418@gmail.com>
Date: Mon, 25 Jun 2018 12:53:41 -0400
Subject: [PATCH] Fix issue regarding WeakMap constructor

---
 src/lib/es2015.collection.d.ts | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/src/lib/es2015.collection.d.ts b/src/lib/es2015.collection.d.ts
index 06a3473076f..fd49ca1f25b 100644
--- a/src/lib/es2015.collection.d.ts
+++ b/src/lib/es2015.collection.d.ts
@@ -30,8 +30,7 @@ interface WeakMap<K extends object, V> {
 }
 
 interface WeakMapConstructor {
-    new (): WeakMap<object, any>;
-    new <K extends object, V>(entries?: ReadonlyArray<[K, V]> | null): WeakMap<K, V>;
+    new <K extends object = object, V = any>(entries?: ReadonlyArray<[K, V]> | null): WeakMap<K, V>;
     readonly prototype: WeakMap<object, any>;
 }
 declare var WeakMap: WeakMapConstructor;