From 4fbbbed321baa58418b9379b418278d31400fe3e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=28=C2=B4=E3=83=BB=CF=89=E3=83=BB=EF=BD=80=29?=
 <HerringtonDarkholme@users.noreply.github.com>
Date: Thu, 20 Oct 2016 05:10:44 +0800
Subject: [PATCH] fix #11670, support type guards in NumberConstructor (#11722)

---
 src/lib/es2015.core.d.ts | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/lib/es2015.core.d.ts b/src/lib/es2015.core.d.ts
index 356512ecf58..28f2e12248b 100644
--- a/src/lib/es2015.core.d.ts
+++ b/src/lib/es2015.core.d.ts
@@ -205,13 +205,13 @@ interface NumberConstructor {
       * number. Only finite values of the type number, result in true.
       * @param number A numeric value.
       */
-    isFinite(number: number): boolean;
+    isFinite(value: any): value is number;
 
     /**
       * Returns true if the value passed is an integer, false otherwise.
       * @param number A numeric value.
       */
-    isInteger(number: number): boolean;
+    isInteger(value: any): value is number;
 
     /**
       * Returns a Boolean value that indicates whether a value is the reserved value NaN (not a
@@ -219,13 +219,13 @@ interface NumberConstructor {
       * to a number. Only values of the type number, that are also NaN, result in true.
       * @param number A numeric value.
       */
-    isNaN(number: number): boolean;
+    isNaN(value: any): value is number;
 
     /**
       * Returns true if the value passed is a safe integer.
       * @param number A numeric value.
       */
-    isSafeInteger(number: number): boolean;
+    isSafeInteger(value: any): value is number;
 
     /**
       * The value of the largest integer n such that n and n + 1 are both exactly representable as