5 Best Alternatives to Immer for State Management in 2026

Why look beyond Immer

Immer facilitates working with immutable state by allowing developers to write code as if they were mutating data directly, then producing a new immutable state based on those changes. This approach, often described as "mutable updates for immutable data," can simplify complex state logic, particularly in applications using libraries like Redux or Zustand, where immutability is a core principle for change detection and performance optimizations. Immer achieves this by creating a "draft" of the current state, which developers can modify, and then automatically generating a new, immutable state object containing only the necessary changes. This can reduce boilerplate compared to manual deep cloning and object spreading.

However, developers might explore alternatives for several reasons. Some projects might prefer a more explicit immutable data structure paradigm, where immutability is enforced at the data type level, potentially offering different performance characteristics or a stricter programming model. Others may seek a more comprehensive state management solution that bundles immutability with other features like asynchronous action handling, developer tooling, and opinionated architecture. Additionally, projects with simpler state needs might find Immer's abstraction unnecessary, opting for basic JavaScript spread syntax or utility libraries for object manipulation. Understanding these varying needs helps in evaluating the landscape of state management and immutability tools.

Top alternatives ranked

1. 1. Immutable.js — Persistent, immutable data structures for JavaScript

   Immutable.js, developed by Meta, provides a set of persistent immutable data structures, including List, Map, Set, and Record. Unlike Immer, which uses a mutable draft to produce an immutable copy, Immutable.js operates directly with data structures that are inherently immutable. Any operation performed on an Immutable.js collection returns a new collection, leaving the original unchanged. This explicit immutability can be beneficial for applications where strict adherence to immutable principles is critical, potentially reducing unexpected side effects and simplifying reasoning about state changes. It offers methods for efficient structural sharing, meaning that new versions of data structures share as much of the old structure as possible, which can optimize memory usage and performance for certain operations.

   While Immutable.js offers strong guarantees around immutability and can be highly performant for specific use cases involving large collections, its API introduces a new set of data types that developers must learn and integrate. This can lead to a steeper learning curve and require more significant refactoring when migrating existing codebases. For projects that prioritize explicit immutable data types and are willing to adopt a new API for collections, Immutable.js provides a robust solution. Its persistent data structures are well-suited for scenarios requiring extensive historical state tracking or undo/redo functionality.

   Best for:

   • Applications requiring strictly enforced immutable data types
   • Optimizing performance for large, frequently updated collections
   • Complex state management with undo/redo capabilities
   • Projects with a preference for functional programming paradigms

   Learn more on the Immutable.js profile page or visit the official Immutable.js website.

2. 2. Redux Toolkit — Opinionated, batteries-included Redux development

   Redux Toolkit (RTK) is the official, opinionated, batteries-included toolset for efficient Redux development. It aims to simplify common Redux use cases and improve the developer experience by providing utilities that abstract away much of the boilerplate traditionally associated with Redux. Notably, RTK includes Immer internally within its createSlice and createReducer functions. This means that when using RTK, developers can write mutable-looking update logic directly within their reducers, and Immer automatically handles the immutable state updates behind the scenes. This integration allows developers to leverage Immer's benefits without explicitly importing or configuring it.

   RTK extends beyond just immutability, offering solutions for store setup, defining reducers, creating actions, and handling asynchronous logic with createAsyncThunk. It provides a comprehensive framework for managing global application state, making it a strong alternative for projects that require a full-fledged state management solution with Redux's predictable state container model. For developers already familiar with Redux or those starting new Redux projects, RTK significantly streamlines development by providing sensible defaults and best practices. Its focus on reducing boilerplate and improving ergonomics makes it a compelling choice for managing complex application state.

   Best for:

   • New and existing Redux projects seeking to reduce boilerplate
   • Applications requiring a comprehensive global state management solution
   • Teams prioritizing developer experience and best practices in Redux
   • Projects needing integrated solutions for asynchronous data fetching

   Learn more on the Redux Toolkit profile page or visit the official Redux Toolkit website.

3. 3. Lodash — A JavaScript utility library for common programming tasks

   Lodash is a JavaScript utility library that provides a wide range of helper functions for common programming tasks, including array, object, string, and number manipulation. While not a dedicated state management or immutability library like Immer or Immutable.js, Lodash offers functions that can be used to perform immutable updates manually. Functions like _.cloneDeep() can create a deep copy of an object, allowing modifications to the copy without affecting the original. Other functions like _.set(), _.get(), and _.omit() can be used in conjunction with cloning to perform targeted, immutable updates to nested data structures.

   The key difference is that Lodash requires developers to explicitly manage immutability through cloning and then modifying the cloned object. This approach offers fine-grained control but can be more verbose and error-prone, especially for deeply nested state updates, compared to Immer's draft-based approach. For projects that do not require complex state management solutions or prefer a more manual approach to immutability, Lodash can serve as a flexible utility belt. It is suitable for scenarios where immutability is a consideration but not the primary architectural constraint, or where specific, isolated immutable operations are needed rather than a global state management strategy.

   Best for:

   • Projects needing general JavaScript utility functions
   • Manual immutable updates for simpler state objects
   • Scenarios where fine-grained control over object manipulation is preferred
   • Augmenting existing codebases without introducing new state paradigms

   Learn more on the Lodash profile page or visit the official Lodash documentation.

4. 4. Plain JavaScript Spread Syntax — Native syntax for shallow copying objects and arrays

   Plain JavaScript spread syntax (...) provides a native and concise way to create shallow copies of objects and arrays. When used with objects, it copies enumerable own properties from a source object to a target object. With arrays, it unpacks elements into a new array. This capability is fundamental for implementing immutable updates in JavaScript without relying on external libraries for simple cases. For instance, updating a property on an object can be done by spreading the old object and then overriding the desired property: { ...oldObject, newProperty: value }. Similarly, adding an item to an array involves spreading the old array and adding the new item: [ ...oldArray, newItem ].

   The primary limitation of spread syntax for immutability is that it performs a shallow copy. This means that if an object or array contains nested objects or arrays, only references to those nested structures are copied, not the structures themselves. Modifying a nested object in the new shallow copy would still mutate the original nested object, violating immutability. For deeply nested updates, developers would need to manually apply spread syntax at each level of the nesting, which can quickly become verbose and difficult to maintain. However, for applications with flat state structures or where only top-level immutability is required, plain JavaScript spread syntax offers a lightweight and performant solution without any external dependencies.

   Best for:

   • Applications with simple, flat state structures
   • Performing shallow immutable updates on objects and arrays
   • Minimizing dependencies in projects
   • Developers who prefer native JavaScript features for state manipulation

   Learn more about JavaScript Spread Syntax on MDN Web Docs.

5. 5. React useState / useReducer — Local component state management in React

   React's built-in useState and useReducer hooks are fundamental for managing local component state. While they don't directly enforce immutability in the same way Immer or Immutable.js do, the React documentation and best practices strongly encourage treating state as immutable when updating it. When using useState, you typically pass a new state value or a function that returns a new state value to the setter function. For useReducer, the reducer function is expected to return a new state object, not mutate the existing one.

   These hooks are suitable for managing state that is local to a component or a small subtree of components. For simple objects and arrays, developers often use the plain JavaScript spread syntax to create new copies before updating. For more complex or deeply nested state, developers might manually chain spread operations or integrate Immer directly into their reducer logic to simplify immutable updates. The choice between useState and useReducer depends on the complexity of the state logic: useState is ideal for simple value updates, while useReducer is better for complex state logic involving multiple sub-values or when the next state depends on the previous one. While not an alternative to Immer's core immutability mechanism, they represent the primary way state is managed within React components, often in conjunction with immutability helpers.

   Best for:

   • Managing local state within individual React components
   • Simple state updates using native JavaScript features
   • Encapsulating state logic within a component's lifecycle
   • Projects where global state management is not required or handled by other means

   Learn more about React's state management with hooks on react.dev.

Side-by-side

How to pick

Selecting the right tool for managing immutability and state depends heavily on your project's specific requirements, existing architecture, and team's familiarity with different paradigms. Consider these factors when making your decision:

For explicit immutability and functional programming

• If your project demands strict immutability enforced at the data structure level, and your team is comfortable adopting a new API for collections, Immutable.js is a strong candidate. It excels in scenarios requiring extensive history tracking, undo/redo functionality, or highly optimized performance for large, frequently updated datasets where structural sharing is critical.

For comprehensive Redux applications

• If you are building a new Redux application or maintaining an existing one, Redux Toolkit is the recommended choice. It integrates Immer internally, allowing you to write mutable-looking update logic within reducers, while also providing a full suite of tools to simplify Redux development, including store setup, action creators, and asynchronous logic handling. It's designed to reduce boilerplate and enforce best practices.

For general utility and manual control

• If your project has simpler state needs, or you prefer a more manual approach to immutability using familiar JavaScript patterns, Lodash can provide the necessary utility functions. It's suitable for scenarios where you need to perform deep cloning or targeted object manipulation and are comfortable managing the immutable update process yourself. However, be aware that manual deep cloning can become verbose and less performant for very complex state trees compared to Immer's optimized approach.

For lightweight, native JavaScript solutions

• For applications with flat state structures or where only shallow immutability is sufficient, Plain JavaScript Spread Syntax is the most lightweight and performant option. It avoids external dependencies and leverages native language features. Be mindful of its shallow copy nature, which means nested objects will still be mutable unless explicitly copied at each level.

For local component state in React

• Within React components, React's useState and useReducer hooks are the primary mechanisms for managing local state. For simple state, useState is adequate. For more complex state logic, useReducer provides a more structured approach. While these hooks don't enforce immutability, they are designed to work best when state updates are treated immutably (e.g., by using spread syntax or integrating Immer for complex nested objects). These are complementary to, rather than direct alternatives for, Immer's core immutability problem.

Ultimately, the best alternative aligns with your project's architectural principles, performance requirements, and developer workflow. Evaluate each option against your specific context to determine which provides the optimal balance of simplicity, power, and maintainability.