What is React immutable state and why is it important?

In React, immutable state means you should never directly modify state objects or arrays—instead, you create a new copy with the updated values.

It is important because React relies on detecting changes through reference comparison, and immutability ensures updates are predictable, efficient, and correctly trigger re-renders.

What is Immutable State?

Immutability means “not changing the original value.”

In React, state should be treated as immutable:

❌ Wrong (mutating state directly)

Problem:

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✅ Correct (immutable update)

Here:…