/*!
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								 * is-extglob <https://github.com/jonschlinkert/is-extglob>
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								 *
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								 * Copyright (c) 2014-2016, Jon Schlinkert.
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								 * Licensed under the MIT License.
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								 */
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								module.exports = function isExtglob(str) {
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								  if (typeof str !== 'string' || str === '') {
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								    return false;
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								  }
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								  var match;
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								  while ((match = /(\\).|([@?!+*]\(.*\))/g.exec(str))) {
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								    if (match[2]) return true;
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								    str = str.slice(match.index + match[0].length);
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								  }
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								  return false;
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								};
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