immer is a popular JavaScript library that simplifies the process of working with immutable state in applications. It allows developers to work with mutable state while ensuring that the underlying data remains immutable. This is particularly useful in scenarios where state management is complex, such as in React applications. By using immer, developers can write more intuitive and concise code while maintaining the benefits of immutability, such as easier debugging and performance optimizations.

While immer is a powerful tool, there are several alternatives that also provide solutions for managing immutable state:

• immutability-helper is a library designed to help manage immutable data structures in JavaScript. It provides a simple API for updating nested objects and arrays without mutating the original data. This library is particularly useful for developers who want a lightweight solution for handling immutability without the overhead of more complex libraries. If you need to perform straightforward updates to your state while keeping it immutable, immutability-helper is a solid choice.

• immutable is a library that provides persistent immutable data structures. It offers a rich set of data types, including List, Map, and Set, which are optimized for performance and memory efficiency. immutable is ideal for applications that require complex data manipulation and need to maintain immutability throughout. If your application heavily relies on complex data structures and you want to leverage the benefits of immutability, immutable is a robust option.

• seamless-immutable is another library that provides a way to create immutable objects and arrays in JavaScript. It allows you to create immutable versions of your data structures while providing a simple API for updating them. seamless-immutable is particularly useful for developers looking for a straightforward solution to immutability without the complexity of other libraries. If you want to ensure that your data remains immutable while keeping your code clean and simple, seamless-immutable is worth considering.

To see how these libraries compare, check out the comparison: Comparing immer vs immutability-helper vs immutable vs seamless-immutable.