What are immutable collections in JavaScript?

What are immutable collections in JavaScript?

Immutable collections in JavaScript are data structures that cannot be modified after they are created. This means any operation that would normally change the collection results in a new collection instead.

Can you give me an example of an immutable collection?

Sure! One popular example is the Immutable.js library, which provides data structures like List, Map, and Set that are immutable.

What are the benefits of using immutable collections?

Using immutable collections can lead to easier debugging, better performance in certain scenarios, and safer concurrent programming since they prevent unintended side effects.

How do I convert a mutable collection to an immutable one?

You can use libraries like Immutable.js or Immer to convert mutable collections to immutable ones. For example, with Immutable.js, you can create an immutable List from a regular array using Immutable.List(array).