patreon/examples/node_modules/is-posix-bracket/index.js

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/*!
 * is-posix-bracket <https://github.com/jonschlinkert/is-posix-bracket>
 *
 * Copyright (c) 2015-2016, Jon Schlinkert.
 * Licensed under the MIT License.
 */

module.exports = function isPosixBracket(str) {
  return typeof str === 'string' && /\[([:.=+])(?:[^\[\]]|)+\1\]/.test(str);
};