Work with multiple gamepads

let isWaiting = false;

window.addEventListener('gamepadconnected', (e) => {

    const index = e.gamepad.index;

    let isWaiting = false;

    setInterval(async () => {

        if (!opts.js_modal_lightbox_gamepad || isWaiting) return;

        const gamepad = navigator.getGamepads()[0];

        const gamepad = navigator.getGamepads()[index];

        const xValue = gamepad.axes[0];

        if (xValue <= -0.3) {

            modalPrevImage(e);

        }

        if (isWaiting) {

            await sleepUntil(() => {

                const xValue = navigator.getGamepads()[0].axes[0]

                const xValue = navigator.getGamepads()[index].axes[0]

                if (xValue < 0.3 && xValue > -0.3) {

                    return true;

                }