code: function parent(str, { strict = false } = {}) {
    str = path.normalize(str).replace(/\/|\\/, '/');
  
    // special case for strings ending in enclosure containing path separator
    if (/[\{\[].*[\/]*.*[\}\]]$/.test(str)) str += '/';
  
    // preserves full path in case of trailing path separator
    str += 'a';
  
    do {str = path.dirname(str)}
    while (isglob(str, {strict}) || /(^|[^\\])([\{\[]|\([^\)]+$)/.test(str));
  
    // remove escape chars and return result
    return str.replace(/\\([\*\?\|\[\]\(\)\{\}])/g, '$1');
  }
docs: Find the static part of a glob-path,
  split path and return path part
  @param {String} str Path/glob string
  @returns {String} static path section of glob