Function to test whether a path has any hidden folder in it or whether a file is hidden or not using regular expressions and not using the file-system. I find it particularly useful to validate a path that is user-provided and does not actually exist on disk. For unix based systems only.

check-unix-directory.js

/**
 * Tests whether a path is a directory or possibly a file reference.
 *
 * @param {string} path
 * @returns {boolean}
 */
isUnixDirectory: function (path) {
    return (/(^\.+$)|(\/$)/).test(path);
}