From 1cdf883416470c11435e152de0ad4a781cbee2a9 Mon Sep 17 00:00:00 2001
From: Nate Hunzaker <nate.hunzaker@gmail.com>
Date: Sat, 10 Sep 2016 11:26:20 -0400
Subject: [PATCH] Do not allocate an array if no before input events

---
 .../eventPlugins/BeforeInputEventPlugin.js    | 29 ++++++++++---------
 1 file changed, 15 insertions(+), 14 deletions(-)

diff --git a/src/renderers/dom/client/eventPlugins/BeforeInputEventPlugin.js b/src/renderers/dom/client/eventPlugins/BeforeInputEventPlugin.js
index de775d348d2..6dd47f69ffb 100644
--- a/src/renderers/dom/client/eventPlugins/BeforeInputEventPlugin.js
+++ b/src/renderers/dom/client/eventPlugins/BeforeInputEventPlugin.js
@@ -457,20 +457,21 @@ var BeforeInputEventPlugin = {
     nativeEvent,
     nativeEventTarget
   ) {
-    return [
-      extractCompositionEvent(
-        topLevelType,
-        targetInst,
-        nativeEvent,
-        nativeEventTarget
-      ),
-      extractBeforeInputEvent(
-        topLevelType,
-        targetInst,
-        nativeEvent,
-        nativeEventTarget
-      ),
-    ];
+    var compose = extractCompositionEvent(
+      topLevelType,
+      targetInst,
+      nativeEvent,
+      nativeEventTarget
+    );
+
+    var before = extractBeforeInputEvent(
+      topLevelType,
+      targetInst,
+      nativeEvent,
+      nativeEventTarget
+    );
+
+    return compose && before ? [compose, before] : compose ? compose : before;
   },
 };