perf: hoist regular expression

jshttp · Aug 14, 2015 · 5b3f955 · 5b3f955
1 parent e0a38a3
commit 5b3f955
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diff --git a/HISTORY.md b/HISTORY.md
@@ -3,6 +3,7 @@ unreleased
 
   * Add `firstPartyOnly` option
   * Throw better error for invalid argument to parse
+  * perf: hoist regular expression
 
 0.1.3 / 2015-05-19
 ==================

diff --git a/index.js b/index.js
@@ -19,6 +19,7 @@ exports.serialize = serialize;
 
 var decode = decodeURIComponent;
 var encode = encodeURIComponent;
+var pairSplitRegExp = /; */;
 
 /**
  * Parse a cookie header.
@@ -39,7 +40,7 @@ function parse(str, options) {
 
   var obj = {}
   var opt = options || {};
-  var pairs = str.split(/; */);
+  var pairs = str.split(pairSplitRegExp);
   var dec = opt.decode || decode;
 
   pairs.forEach(function(pair) {