How can I use libraries for deep merging objects in JavaScript?

What libraries can I use for deep merging objects in JavaScript?

You can use libraries like Lodash, Deepmerge, or Immer for deep merging objects in JavaScript.

Can you show me an example using Lodash?

Sure! Here's a simple example:

const _ = require('lodash');

const object1 = { a: 1, b: { c: 2 } };
const object2 = { b: { d: 3 }, e: 4 };

const merged = _.merge(object1, object2);
console.log(merged);
// Output: { a: 1, b: { c: 2, d: 3 }, e: 4 }

What about using Deepmerge? Is it different?

Yes, Deepmerge is specifically designed for deep merging. Here's how you can use it:

const deepmerge = require('deepmerge');

const object1 = { a: 1, b: { c: 2 } };
const object2 = { b: { d: 3 }, e: 4 };

const merged = deepmerge(object1, object2);
console.log(merged);
// Output: { a: 1, b: { c: 2, d: 3 }, e: 4 }