From 16f8bfb4fcfdcde5080e04806f98cf6cdad896ab Mon Sep 17 00:00:00 2001
From: Qiming zhao <chemzqm@gmail.com>
Date: Fri, 16 Jun 2017 18:29:59 +0800
Subject: [PATCH] Fix scale not accessible on IOS

On IOS 10.3.2, `e.scale = dist / this.distance * this.scale` would not work, the access to `scale` would cause an error,  but `Object.defineProperty` would works.
---
 index.js | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/index.js b/index.js
index 9836bc6..9b9343e 100644
--- a/index.js
+++ b/index.js
@@ -86,7 +86,13 @@ Pinch.prototype.ontouchmove = function(e) {
   e = E(e);
 
   // iphone does scale natively, just use that
-  e.scale = dist / this.distance * this.scale;
+  var scale = dist / this.distance * this.scale
+  Object.defineProperty(e, 'scale', {
+    get: function () {
+      return scale
+    }
+  })
+
   e.x = mid.x;
   e.y = mid.y;