Embed YouTube with <iframe>:

const node = {
    id: 'embed-1',
    type: 'embed',
    url: 'https://www.youtube.com/watch?v=37fvFffAmf8',
    x: 100,
    y: 100,
    width: 800,
    height: 450,
    lockAspectRatio: true,
};