From: Jukka Kurkela <jukka.kurkela@gmail.com>
Date: Fri, 3 Jan 2020 18:57:25 +0000 (+0200)
Subject: Small optimizations (#6868)
X-Git-Tag: v3.0.0-alpha~163
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=099e552e6ddd2556d31bda5526b10042176d07a0;p=thirdparty%2FChart.js.git

Small optimizations (#6868)

* Only extend element if configuration is provided

* Time scale lookup optimization
---

diff --git a/src/core/core.element.js b/src/core/core.element.js
index fb2e442c3..6c9fc63ab 100644
--- a/src/core/core.element.js
+++ b/src/core/core.element.js
@@ -6,7 +6,9 @@ import {isNumber} from '../helpers/helpers.math';
 class Element {
 
 	constructor(configuration) {
-		extend(this, configuration);
+		if (configuration) {
+			extend(this, configuration);
+		}
 
 		// this.hidden = false; we assume Element has an attribute called hidden, but do not initialize to save memory
 	}
diff --git a/src/scales/scale.time.js b/src/scales/scale.time.js
index 92b6a2006..d98b7816e 100644
--- a/src/scales/scale.time.js
+++ b/src/scales/scale.time.js
@@ -138,7 +138,7 @@ function lookup(table, key, value) {
 
 	while (lo >= 0 && lo <= hi) {
 		mid = (lo + hi) >> 1;
-		i0 = table[mid - 1] || null;
+		i0 = mid > 0 && table[mid - 1] || null;
 		i1 = table[mid];
 
 		if (!i0) {