lib/utils.js
function isRelativeFilepath(str) {
  if (str) {
    return (
      isFilepath(str) && (str.indexOf('./') == 0 || str.indexOf('../') == 0)
    );
  }
  return false;
}
function isRelativeFilepath(str) {
  if (str) {
    return (
      isFilepath(str) && (str.indexOf('./') == 0 || str.indexOf('../') == 0)
    );
  }
  return false;
}
function isRelativeFilepath ( str ) { if ( str ) { return ( isFilepath ( str ) && ( str . indexOf ( './' ) == 0 || str . indexOf ( '../' ) == 0 ) ) ; } return false ; }
Determine if 'str' is a relative filepath
@param {String} str
@returns {Boolean}
Determine if str is a relative filepath