module.exports = function (data) {    
    const packetLength = 1 + 1 + data.tag.byteLength;
    const buffer = new ArrayBuffer(packetLength);
    const view = new DataView(buffer);

    view.setUint8(0, 174);
    view.setUint8(1, packetLength);
    new Uint8Array(buffer, 2).set(data.tag);

    return buffer;
};