define(['./_baseToString', './_castSlice', './_charsStartIndex', './_stringToArray', './toString'], function(baseToString, castSlice, charsStartIndex, stringToArray, toString) {
var undefined;
var reTrimStart = /^\s+/;
function trimStart(string, chars, guard) { string = toString(string); if (string && (guard || chars === undefined)) { return string.replace(reTrimStart, ''); } if (!string || !(chars = baseToString(chars))) { return string; } var strSymbols = stringToArray(string), start = charsStartIndex(strSymbols, stringToArray(chars));
return castSlice(strSymbols, start).join(''); }
return trimStart;});