From da429688f8887888cfcbb7743db5bd03efe81abf Mon Sep 17 00:00:00 2001
From: "duzc2dtw@gmail.com" <duzc2dtw@gmail.com>
Date: Wed, 13 Dec 2017 17:02:34 +0800
Subject: [PATCH] space between if and (

---
 core/extensions.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/core/extensions.js b/core/extensions.js
index c32e1d60f..774233c8d 100644
--- a/core/extensions.js
+++ b/core/extensions.js
@@ -74,7 +74,7 @@ Blockly.Extensions.register = function(name, initFn) {
  *     registered.
  */
 Blockly.Extensions.registerMixin = function(name, mixinObj) {
-  if(!goog.isObject(mixinObj)){
+  if (!goog.isObject(mixinObj)){
     throw new Error('Error: Mixin "' + name + '" must be a object');
   }
   Blockly.Extensions.register(name, function() {