JavaScript path to regexp: https://github.com/aaronblohowiak/routes.js

path2regexp.js

window.pathToRegExp = function (path, keys, options) {
    keys || (keys = []);
    options || (options = {});
    // https://github.com/aaronblohowiak/routes.js
    path = path
        .concat('/?')
        .replace(/\/\(/g, '(?:/')
        .replace(/(\/)?(\.)?:(\w+)(?:(\(.*?\)))?(\?)?|\*/g, function(_, slash, format, key, capture, optional){
            if (_ === "*"){
                keys.push(undefined);
                return _;
            }

            keys.push({name:key});
            slash = slash || '';
            return ''
                + (optional ? '' : slash)
                + '(?:'
                + (optional ? slash : '')
                + (format || '') + (capture || '([^/]+?)') + ')'
                + (optional || '');
        })
        .replace(/([\/.])/g, '\\$1')
        .replace(/\*/g, '(.*)');

    var regexp = new RegExp('^' + path + '$', 'i');

    regexp.keys = keys;
    regexp.options = options;

    return regexp;
};