A good list of resources for deep cloning large object in JS. There are still no great methodologies to deal with cyclical object references here.

Browser

JSON.parse(JSON.stringify(obj))

Node.js

const v8 = require('v8');

const structuredClone = obj => {
  return v8.deserialize(v8.serialize(obj));
};

Useful Links:

• https://dassur.ma/things/deep-copy/
• https://deep-copy.glitch.me/
• https://stackoverflow.com/questions/122102/what-is-the-most-efficient-way-to-deep-clone-an-object-in-javascript/10916838#10916838