From: Evert Timberg <evert.timberg+github@gmail.com>
Date: Mon, 28 Dec 2020 08:19:16 +0000 (-0500)
Subject: Cache the lineheight regex (#8240)
X-Git-Tag: v3.0.0-beta.8~29
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=78e78256a5e2630b2bba644a8d48ec1674220179;p=thirdparty%2FChart.js.git

Cache the lineheight regex (#8240)
---

diff --git a/src/helpers/helpers.options.js b/src/helpers/helpers.options.js
index 8a445f6e9..2b01d518e 100644
--- a/src/helpers/helpers.options.js
+++ b/src/helpers/helpers.options.js
@@ -2,6 +2,8 @@ import defaults from '../core/core.defaults';
 import {isArray, isObject, valueOrDefault} from './helpers.core';
 import {toFontString} from './helpers.canvas';
 
+const LINE_HEIGHT = new RegExp(/^(normal|(\d+(?:\.\d+)?)(px|em|%)?)$/);
+
 /**
  * @alias Chart.helpers.options
  * @namespace
@@ -15,7 +17,7 @@ import {toFontString} from './helpers.canvas';
  * @since 2.7.0
  */
 export function toLineHeight(value, size) {
-	const matches = ('' + value).match(/^(normal|(\d+(?:\.\d+)?)(px|em|%)?)$/);
+	const matches = ('' + value).match(LINE_HEIGHT);
 	if (!matches || matches[1] === 'normal') {
 		return size * 1.2;
 	}