My Node.js server receives a stream of data from an external API. I serve my client after receiving the data completely. Like this,

async function getFile(req, res) {
    const { id } = req.body;
    const file = await get(process.env.FILE_API_URL + id);

    res.send(file);
}

But instead of waiting to receive the whole stream, I would like to stream it to the client as soon as I have some data. Kind of like this,

function getFile(req, res) {
    const { id } = req.body;
    const stream = get(process.env.FILE_API_URL + id);

    stream.on('data', (data) > {
        res.write(data);
    });

    stream.on('end', res.end);
}

How can I implement this?