Writing Clean & Maintainable Code

What is the importance of implementing immutability in JavaScript applications?

// Mutable approach:
const updateUser = (user) => {
  user.name = 'John';
  return user;
};

// Immutable approach:
const updateUser = (user) => {
  return { ...user, name: 'John' };
};

It improves application performance
It reduces memory usage
It prevents unexpected side effects and makes code more predictable
Immutability helps prevent unexpected side effects by ensuring that data structures cannot be modified after creation. This makes the code more predictable, easier to debug, and helps prevent bugs related to shared mutable state. It's particularly important in functional programming and when working with state management libraries like Redux.
It makes the code more compact

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