From 8d63bb896a547902bd3d12e6de8f21c288f9e03c Mon Sep 17 00:00:00 2001
From: Danielv123 <tranen.bananen@gmail.com>
Date: Mon, 6 Nov 2017 19:53:12 +0100
Subject: [PATCH] Big charting performance  increase for master

---
 master.js | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/master.js b/master.js
index d7cbfe26..93089bbd 100644
--- a/master.js
+++ b/master.js
@@ -483,7 +483,12 @@ app.post("/api/getTimelineStats", function(req,res) {
 			docs.forEach(el => {
 				for(let key in el.data) {
 					if(el.data[key] === '0') {
-						delete el.data[key];
+						// Set value to undefined instead of using the delete keyword.
+						// This is because the delete keyword is super duper slow.
+						// https://stackoverflow.com/questions/208105/how-do-i-remove-a-property-from-a-javascript-object
+						
+						//delete el.data[key];
+						el.data[key] = undefined;
 					}
 				}
 			});