From 3410f42e5ec7699de1337781ce7afe7984a61ed8 Mon Sep 17 00:00:00 2001
From: adroitwhiz <adroitwhiz@protonmail.com>
Date: Thu, 25 Apr 2019 16:41:51 -0400
Subject: [PATCH] Remove Number.isNaN IE polyfill

---
 src/util/cast.js | 12 ++----------
 1 file changed, 2 insertions(+), 10 deletions(-)

diff --git a/src/util/cast.js b/src/util/cast.js
index 14089cd9f..042ebcd5d 100644
--- a/src/util/cast.js
+++ b/src/util/cast.js
@@ -1,13 +1,5 @@
 const Color = require('../util/color');
 
-/**
- * Store and possibly polyfill Number.isNaN. Number.isNaN can save time over
- * self.isNaN by not coercing its input. We need to polyfill it to support
- * Internet Explorer.
- * @const
- */
-const _NumberIsNaN = Number.isNaN || isNaN;
-
 /**
  * @fileoverview
  * Utilities for casting and comparing Scratch data-types.
@@ -33,13 +25,13 @@ class Cast {
         if (typeof value === 'number') {
             // Scratch treats NaN as 0, when needed as a number.
             // E.g., 0 + NaN -> 0.
-            if (_NumberIsNaN(value)) {
+            if (Number.isNaN(value)) {
                 return 0;
             }
             return value;
         }
         const n = Number(value);
-        if (_NumberIsNaN(n)) {
+        if (Number.isNaN(n)) {
             // Scratch treats NaN as 0, when needed as a number.
             // E.g., 0 + NaN -> 0.
             return 0;