React Foam: The 1KB State Management Library You Can Master in 5 Minutes
Sajjad Maleki

Sajjad Maleki @malekidev

Joined:
Aug 17, 2025

React Foam: The 1KB State Management Library You Can Master in 5 Minutes

Publish Date: Aug 17
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We all love React for its component-based architecture and declarative approach to building UIs. But let's be honest, managing state, especially as applications grow, can become a source of frustration. Boilerplate code, steep learning curves, and performance concerns often arise with popular solutions. What if there was a simpler way? A way that allows you to master React state management in just 5 minutes and significantly reduces bundle size?


🚨 The State Management Problem We’ve All Faced

If you’ve been building React apps for a while, you’ve probably hit one (or all) of these pain points:

  • Redux: Powerful, but verbose and heavy. Bundle sizes balloon, and you spend too much time writing actions, reducers, and boilerplate.
  • Zustand: Sleeker, but still larger than necessary and requires some manual care for memoization.
  • Context + useReducer: Simple, but causes every consumer to re-render — even when only a single value changes.

When I built React Foam, my goal was simple:
✅ Keep it as small as possible (under 1KB gzipped)
✅ Make the API so intuitive you can learn it in minutes
✅ Bake in performance optimizations you don’t have to think about
✅ Provide first-class TypeScript support without extra config


Why choose React Foam?

  • Unparalleled Simplicity: React Foam's intuitive API and hook-based design allow developers to grasp the basics and integrate it into their projects within minutes.

  • Featherlight Footprint: The 1KB size means minimal impact on your application's bundle size, crucial for performance optimization, particularly on mobile or bandwidth-constrained environments.

  • Reduced Boilerplate: Unlike libraries that demand extensive configuration and action/reducer definitions, React Foam lets you focus on your state logic, saving time and mental overhead.

  • Familiar React Experience: Leveraging hooks directly, React Foam feels like a natural extension of React, minimizing the learning curve for developers already comfortable with React hooks.

  • Scalable for Many Needs: While its primary focus is simplicity, React Foam's underlying design allows it to scale effectively for small-to-medium applications and specific use cases where size and ease of use are paramount.


🛠 Quick Start (Yes, It’s This Simple)

import { createStore } from 'react-foam';

// Create a store with initial state
const useCounterStore = createStore({ count: 0 });

function Counter() {
  const count = useCounterStore(s => s.count);

  return (
    <button onClick={() =>
      useCounterStore.setState(s => ({ count: s.count + 1 }))
    }>
      Count: {count}
    </button>
  );
}
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No providers. No reducers. No mental overhead.


⚖️ How React Foam Stacks Up

Feature React Foam Zustand Redux Toolkit Context API
Bundle Size ~1KB ~8KB ~45KB 0KB
Boilerplate Minimal Low High Medium
Performance Excellent Good Good Poor
TypeScript Excellent Good Good Manual
Memoization Built-in (memo) Shallow compare Manual Manual
DevTools Planned Yes Excellent Limited

🏎 Built for Performance

React Foam automatically prevents unnecessary re-renders:

  1. Selective Subscriptions – Components only re-render when their selected state changes.
  2. Memoized Selectors – Built-in memo utility tracks dependencies automatically.
  3. Efficient Store Internals – Minimal listener overhead, with auto-cleanup on unmount.

🎯 Real-World Example: Preventing Re-Renders with memo

import { createStore, memo } from 'react-foam';

const useProductsStore = createStore({
  products: [
    { id: 1, name: 'Laptop', inStock: true },
    { id: 2, name: 'Mouse', inStock: false }
  ],
  lastUpdated: Date.now()
});

function InStockProducts() {
  const inStock = useProductsStore(
    memo(s => s.products.filter(p => p.inStock))
  );

  return (
    <ul>{inStock.map(p => <li key={p.id}>{p.name}</li>)}</ul>
  );
}
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With memo, updating lastUpdated won’t re-render this component — even though the store changes.


💡 Best Practices for Using React Foam

  • Keep Stores Small & Focused – One store per domain (useUserStore, useCartStore).
  • Use Selectors for Primitives – Directly subscribe to primitive values for optimal performance.
  • Wrap Derived Data in memo – Avoid re-renders from new arrays/objects.
  • Prefer Functional Updates – Always work with the latest state.

🛣 Roadmap

  • DevTools Integration (browser extension)
  • Persistence Plugin (localStorage/sessionStorage)
  • React Native Optimizations
  • Framework-Agnostic Core (Vue, Svelte, etc.)

🚀 Try It Today

📦 Install:

npm install react-foam
# or
yarn add react-foam
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React Foam is an open-source project and welcomes contributions from the community. We believe in collaboration and aim to foster a vibrant community around this library.

  • Explore the Docs: Dive into the comprehensive documentation for detailed explanations, API references, and advanced usage patterns. Docs
  • Contribute on GitHub: Report issues, suggest features, or even submit pull requests to help improve React Foam.
    GitHub Repo
    NPM Package

  • Share Your Feedback: Join the conversation on [mention relevant social media or community platforms like Reddit] and share your experiences, challenges, and success stories with React Foam.*

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