Javascript Clone Object | Writing own deep clone function | JavaScript Interview Question

Timestamps:
00:00 Introduction
01:34 Using spread operator
03:46 Using JSON.parse and JSON.stringify
04:12 Using lodash _.cloneDeep()
04:59 Writing own deep clone function
09:30 Code Explanation with dry run

[NeelSanghvi]

not working for
const obj = {
b:4,
a:1,
c:{
d:[[1, 2], [3, 4]]
}
}