/*! * 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); };