Exploring State Management: @preact signals react vs. useState in React


State management is a fundamental aspect of building robust and dynamic user interfaces in React applications. While the built-in useState hook is a widely-used tool for managing state within components, there are alternative solutions that can offer distinct advantages.

One such solution is the @preact/signals-react library, which introduces the concept of Signals for managing state. In this blog post, we’ll delve into the @preact/signals-react library, explore its usage with examples, and compare it with the useState hook in React.

Understanding @preact/signals-react

The @preact/signals-react library is inspired by the concept of the Signal and provides a structured approach to state management in React applications. It aims to offer centralised and predictable state management while promoting code modularity and reusability. The library works seamlessly with Preact and React and can be easily integrated into your projects.

Key Features of @preact/signals-react

1. Signal Creation: Just like the concept of Redux stores, you create Signals to encapsulate specific pieces of state and their management logic. This centralizes state management and makes it easier to manage complex application states.

2. State Management: Signals handle state updates and provide a clear way to modify and observe state changes. Components can connect to Signals and access state as well as update it using predefined methods.

3. Predictable State Changes: Similar to Redux, Signals maintain a predictable pattern for state changes, ensuring that your components always reflect the most up-to-date state.

4. Code Reusability: Signals can be easily shared across different components, promoting code reusability and reducing duplicate state management code.

Related read: How To Implement Redux Toolkit With React Js

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Using @preact/signals-react with Examples

Let’s explore a basic example to understand how to use @preact/signals-react for state management and compare it with the traditional useState hook.

Using @preact/signals-react:

example using preact signals-react


Using useState in React:

example using useState in React

Comparing @preact/signals-react with useState

Centralization and Code Organization: With @preact/signals-react, the state logic is centralized in Signals, which promotes better code organization and separation of concerns. In contrast, useState keeps the state logic within the component itself.

Predictable Updates: Signals guarantee a predictable pattern for state updates due to their centralized nature. With useState, managing complex state updates can become challenging as the component grows.

Code Reusability: @preact/signals-react encourages code reusability through centralized state management. In contrast, useState can lead to duplicate state logic if not managed carefully.

Related read: What is Code Restructuring?

Ecosystem and Familiarity: While @preact/signals-react is powerful, it might not be as widely adopted as useState, and developers might already be familiar with the useState hook.



@preact/signals-react offers an alternative approach to state management in React applications by introducing the concept of Signals. It provides centralized, predictable, and reusable state management, which can be particularly advantageous as your application scales.

While both @preact/signals-react and the useState hook serve the purpose of managing state, the choice between them depends on your project’s complexity, team familiarity, and preference for a more structured state management approach. Experimenting with both options will help you make an informed decision that best suits your application’s needs.

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