How do I use lodash's deep copy function?

What is lodash's deep copy function and how do I use it?

Lodash's deep copy function creates a deep clone of a value, ensuring that nested objects are copied correctly. You can use it by calling _.cloneDeep(value).

Can you show me an example of using cloneDeep?

Sure! Here's an example:

const _ = require('lodash');

const original = { a: 1, b: { c: 2 } };
const copy = _.cloneDeep(original);

copy.b.c = 3;

console.log(original.b.c); // Outputs: 2
console.log(copy.b.c); // Outputs: 3

This shows that the original object remains unchanged.

Are there any performance considerations when using cloneDeep?

Yes, cloneDeep can be slower than shallow copying, especially for large objects. It's best to use it only when necessary.

What are some alternatives to lodash's cloneDeep?

You can use the native structuredClone() method in modern browsers or JSON methods like JSON.parse(JSON.stringify(value)), but be aware of their limitations.