(function () {
    const input = document.getElementById("scan-input");
    const form = document.getElementById("scan-search-form");

    if (!input || !form) {
        return;
    }

    // Keep focus for barcode scanners that type and send Enter immediately.
    window.addEventListener("load", function () {
        input.focus();
    });

    document.addEventListener("keydown", function (event) {
        if (event.key === "Escape") {
            input.value = "";
            input.focus();
        }
    });
})();