What are the best practices for using immutable data in JavaScript?

What are the best practices for using immutable data in JavaScript?

Using immutable data in JavaScript helps prevent unintended side effects. Key practices include using libraries like Immutable.js, leveraging Object.freeze, and adopting functional programming techniques.

Can you explain how Object.freeze works?

Object.freeze prevents modification of existing properties and prevents adding new properties to an object. It makes the object immutable.

Are there any performance considerations when using immutable data?

Yes, while immutability can lead to safer code, it may introduce performance overhead due to the need to create new objects instead of modifying existing ones. Profiling is essential.

What libraries do you recommend for managing immutable data?

I recommend libraries like Immutable.js, Immer, and seamless-immutable. They provide powerful tools for working with immutable data structures.