function isCurrency(str, options) {
		  (0, _assertString.default)(str);
		  options = (0, _merge.default)(options, default_currency_options);
		  return currencyRegex(options).test(str);
		}
Runs iterator over provided array elements in parallel

@param   {array|object} list - array or object (named list) to iterate over
@param   {function} iterator - iterator to run
@param   {function} callback - invoked when all elements processed
@returns {function} - jobs terminator