Asset::detectType

static function detectType($path)
{
	$type = mb_strtolower(mb_substr(strrchr($path, '.'), 1));
	switch ($type)
	{
		case 'js':
			return self::JS;
		case 'css':
			return self::CSS;
		case 'htm':
		case 'html':
			return self::LAYOUT;
		case 'php':
			return self::LANG;
		default:
			return null;
	}
}