From af23b5d94784dd589d9a7059604c546ca7d98c57 Mon Sep 17 00:00:00 2001
From: atomiks <sprytex@gmail.com>
Date: Tue, 9 Jan 2018 05:58:58 +1100
Subject: [PATCH] cache the getting

---
 snippets/createEventHub.md | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/snippets/createEventHub.md b/snippets/createEventHub.md
index 3b0e10c33..3740df1bd 100644
--- a/snippets/createEventHub.md
+++ b/snippets/createEventHub.md
@@ -19,12 +19,14 @@ const createEventHub = () => ({
     (this.hub.get(event) || []).forEach(handler => handler(data));
   },
   on(event, handler) {
-    if (!this.hub.get(event)) this.hub.set(event, []);
-    this.hub.get(event).push(handler);
+    const handlers = this.hub.get(event);
+    if (!handlers) this.hub.set(event, []);
+    handlers.push(handler);
   },
   off(event, handler) {
-    const i = (this.hub.get(event) || []).findIndex(h => h === handler);
-    if (i > -1) this.hub.get(event).splice(i, 1);
+    const handlers = this.hub.get(event);
+    const i = (handlers || []).findIndex(h => h === handler);
+    if (i > -1) handlers.splice(i, 1);
   }
 });
 ```