From 2682703ccafc2ff4ea1807c511d519ea1b5092d9 Mon Sep 17 00:00:00 2001
From: Daniel Rosenwasser <drosen@microsoft.com>
Date: Tue, 18 Aug 2015 12:55:54 -0700
Subject: [PATCH] Added the '[Symbol.hasInstance]' method to the 'Function'
 interface.

---
 src/lib/es6.d.ts | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/lib/es6.d.ts b/src/lib/es6.d.ts
index d7d9bbce1b4..934aa9d0762 100644
--- a/src/lib/es6.d.ts
+++ b/src/lib/es6.d.ts
@@ -174,6 +174,15 @@ interface Function {
       * Returns the name of the function. Function names are read-only and can not be changed.
       */
     name: string;
+
+    /**
+     * Determines whether the given value inherits from this function if this function was used
+     * as a constructor function.
+     *
+     * A constructor function can control which objects are recognized as its instances by
+     * 'instanceof' by overriding this method.
+     */
+    [Symbol.hasInstance](value: any): boolean;
 }
 
 interface NumberConstructor {