'use strict';

module.exports = (flag, argv = process.argv) => {
  const prefix =
    flag.startsWith('-') ? ''
    : flag.length === 1 ? '-'
    : '--';
  const position = argv.indexOf(prefix + flag);
  const terminatorPosition = argv.indexOf('--');
  return (
    position !== -1 &&
    (terminatorPosition === -1 || position < terminatorPosition)
  );
};