What is immutability in JavaScript?

Can you explain what immutability means in JavaScript?

Immutability in JavaScript refers to the inability to change an object's state after it has been created. This means that once an object is defined, its properties cannot be altered.

Why is immutability important in programming?

Immutability helps prevent unintended side effects, making code easier to understand and debug. It also enhances performance in certain scenarios, especially in functional programming.

Can you give me an example of an immutable data structure?

Sure! An example of an immutable data structure in JavaScript is the Immutable.js library, which provides persistent data structures like List, Map, and Set that cannot be modified after creation.

How do I create an immutable object in JavaScript?

You can create an immutable object using Object.freeze(), which prevents any changes to the object. For example: const obj = Object.freeze({ name: 'Alice' });.