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

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?

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🚨 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

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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.

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🛠 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>
  );
}

No providers. No reducers. No mental overhead.

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⚖️ 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

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🏎 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>
  );
}

With memo, updating lastUpdated won’t re-render this component — even though the store changes.

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💡 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.

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🛣 Roadmap

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

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🚀 Try It Today

📦 Install:

npm install react-foam
# or
yarn add react-foam

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.*