commit 4e753d5485afa20ab24d24e59db5496a8d2bf44c
Author: Tom Hughes <tom@compton.nu>
Date:   Thu Mar 15 11:29:05 2018 +0000

    Remove U+180E MONGOLIAN VOWEL SEPARATOR from whitespace characters
    
    Unicode 6.3.0 changed this character from the Zs "Separator, space"
    category to the Cf "Other, format" category and Node.js has apparently
    now caught up and no longer considers it a space character.

diff --git a/implementation.js b/implementation.js
index 304246c..42e7cba 100644
--- a/implementation.js
+++ b/implementation.js
@@ -4,8 +4,8 @@ var bind = require('function-bind');
 var ES = require('es-abstract/es5');
 var replace = bind.call(Function.call, String.prototype.replace);
 
-var leftWhitespace = /^[\x09\x0A\x0B\x0C\x0D\x20\xA0\u1680\u180E\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000\u2028\u2029\uFEFF]+/;
-var rightWhitespace = /[\x09\x0A\x0B\x0C\x0D\x20\xA0\u1680\u180E\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000\u2028\u2029\uFEFF]+$/;
+var leftWhitespace = /^[\x09\x0A\x0B\x0C\x0D\x20\xA0\u1680\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000\u2028\u2029\uFEFF]+/;
+var rightWhitespace = /[\x09\x0A\x0B\x0C\x0D\x20\xA0\u1680\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000\u2028\u2029\uFEFF]+$/;
 
 module.exports = function trim() {
 	var S = ES.ToString(ES.CheckObjectCoercible(this));
diff --git a/test/tests.js b/test/tests.js
index 6e3889c..8de60bf 100644
--- a/test/tests.js
+++ b/test/tests.js
@@ -5,7 +5,7 @@ module.exports = function (trim, t) {
 		st.equal(trim(' \t\na \t\n'), 'a', 'strips whitespace off left and right sides');
 		st.equal(trim('a'), 'a', 'noop when no whitespace');
 
-		var allWhitespaceChars = '\x09\x0A\x0B\x0C\x0D\x20\xA0\u1680\u180E\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000\u2028\u2029\uFEFF';
+		var allWhitespaceChars = '\x09\x0A\x0B\x0C\x0D\x20\xA0\u1680\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000\u2028\u2029\uFEFF';
 		st.equal(trim(allWhitespaceChars + 'a' + allWhitespaceChars), 'a', 'all expected whitespace chars are trimmed');
 
 		st.end();