Head-to-Head: Immer vs Immutable.js Analysis

immer

v10.0.3(5 months ago)

This package is actively maintained.Types definitions are bundled with the npm packageNumber of direct dependencies: 0Monthly npm downloads

Immer is a JavaScript library that allows you to work with immutable data structures in a more intuitive and efficient way. It provides a simple API that enables you to create and update immutable data structures without the need for manual copying or cloning. With Immer, you can write code that looks and feels like you are directly mutating the data, while behind the scenes, Immer takes care of creating a new immutable state.

Alternatives:
immutable+
seamless-immutable+
mori+
valtio+
immer-wieder+
use-immer+
baobab+
proxily+
react-copy-write+
storeon+

Tags: javascriptimmutable-datastate-managementdata-structures

immutable

v5.0.0-beta.5(about 1 month ago)

This package is actively maintained.Types definitions are bundled with the npm packageNumber of direct dependencies: 0Monthly npm downloads

Immutable is a JavaScript library that provides immutable data structures to help you write more predictable and efficient code. It allows you to create immutable collections such as List, Map, and Set, which cannot be modified once created. Instead of mutating the data, Immutable provides methods that return new modified versions of the data, ensuring that the original data remains unchanged.

Alternatives:
immer+
seamless-immutable+
mori+
baobab+
immutable-assign+
collect.js+
valtio+
structural-js+
icepick+
timm+

Tags: javascriptimmutabledata-structuresperformancepredictability

Fight!

Popularity

Immer and Immutable.js are both popular npm packages in the JavaScript community. However, Immutable.js has been around for a longer time and has a larger user base, making it more established and widely adopted.

Usage and Integration

Immer is a lightweight library that allows for easy immutable state updates using a simple and intuitive API. It works seamlessly with plain JavaScript objects. On the other hand, Immutable.js provides a more powerful and feature-rich immutable data structure library. It introduces its own classes and methods for manipulating immutable data structures in a functional programming style.

Performance

When it comes to performance, Immer generally performs better than Immutable.js due to its optimized handling of immutable state updates. Immer is built with performance in mind and utilizes structural sharing techniques to minimize memory usage and update costs. Immutable.js, while providing powerful features, can be less performant, especially with large data structures.

Developer Experience

Immer has a simpler API and is easier to learn and use compared to Immutable.js. It provides a simpler and more intuitive approach to immutability, allowing developers to work with mutable-like syntax while ensuring immutability. Immutable.js, on the other hand, has a steeper learning curve due to its comprehensive API and functional programming paradigm.

Interoperability

Since Immer operates at a shallow level and allows for seamless integration with existing JavaScript objects, it plays well with other libraries and frameworks. Immutable.js, on the other hand, introduces its own data structures, which may require additional effort for integration with other parts of the application ecosystem.

Community Support and Maintenance

Immutable.js has a larger and more established community support, documentation, and resources compared to Immer. It has been extensively used and tested in production environments. However, Immer is actively maintained and continues to gain popularity, with a growing community and adequate documentation and support.