deep copy of object code example
Example 1: clone javascript object
let clone = Object.assign({}, objToClone);
Example 2: how to deep copy an object in javascript
const obj1 = { a: 1, b: 2, c: 3 };
// this converts the object to string so there will be no reference from
// this first object
const s = JSON.stringify(obj1);
const obj2 = JSON.parse(s);