old konami jquery plugin

konami.js

$.fn.konami = function (options) {
    var enterKey = 13;

    if (typeof options == 'function') {
        options = { callback: options };
    }

    options = options || {};

    options = $.extend({
        callback: false,
        keyCode: [38, 38, 40, 40, 37, 39, 37, 39, 66, 65],
        reqEnter: true, //13,
        enterTime: false
    }, options);


    if (options.callback == false) return;

    if (options.reqEnter && options.keyCode[options.keyCode.length] != enterKey) {
        options.keyCode.push(enterKey);
    }

    return this.each(function () {
        var seq = [];
        $(this).keyup(function (e) {
            if (e.keyCode == options.keyCode[seq.length]) {
                seq.push(e.keyCode);
            } else {
                seq = [];
            }

            if (options.keyCode.length == seq.length) {
                seq = [];
                options.callback();
            }
        });
    });
}

$('css selector').konami(() => {
// do something
});