From 373be07fab9f71edd44c04b2ade5e4aa74f893c2 Mon Sep 17 00:00:00 2001
From: Josh Pike <josh@streaka.com>
Date: Mon, 23 Apr 2018 17:10:59 +0700
Subject: [PATCH] Performance related tweaks

---
 lib/colors.js | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/lib/colors.js b/lib/colors.js
index 13b0085..7fa952f 100644
--- a/lib/colors.js
+++ b/lib/colors.js
@@ -35,6 +35,7 @@ colors.themes = {};
 
 var ansiStyles = colors.styles = require('./styles');
 var defineProps = Object.defineProperties;
+var newLineRegex = new RegExp(/[\r\n]+/g);
 
 colors.supportsColor = require('./system/supports-colors').supportsColor;
 
@@ -104,13 +105,20 @@ function applyStyle() {
     return str;
   }
 
+  var newLinesPresent = false;
+  if(str.indexOf('\n') != -1){
+    newLinesPresent = true;
+  }
+
   var nestedStyles = this._styles;
 
   var i = nestedStyles.length;
   while (i--) {
     var code = ansiStyles[nestedStyles[i]];
     str = code.open + str.replace(code.closeRe, code.open) + code.close;
-    str = str.replace(new RegExp(/[\r\n]+/g), code.close + '\n' + code.open);
+    if(newLinesPresent){
+      str = str.replace(newLineRegex, code.close + '\n' + code.open);
+    }
   }
 
   return str;