Function.prototype.bindRight = function (context, ...firstArgs) {
    return (...secArgs) => {
        return this.apply(null, [...secArgs.reverse(), ...firstArgs.reverse()]);
    };
};

function add(x, y, z) {
    return 100 * x + 10 * y + z;
}

const add2 = add.bindRight(null, 1, 2);
const result = add2(3);
console.log('--result: ', result); // => 321