--- /dev/null
+var makeString = require('./helper/makeString');
+var defaultToWhiteSpace = require('./helper/defaultToWhiteSpace');
+var nativeTrimLeft = String.prototype.trimLeft;
+
+module.exports = function ltrim(str, characters) {
+ str = makeString(str);
+ if (!characters && nativeTrimLeft) return nativeTrimLeft.call(str);
+ characters = defaultToWhiteSpace(characters);
+ return str.replace(new RegExp('^' + characters + '+'), '');
+};