Unstated  —  The setState of React State Management

Unstated is designed to build on top of the patterns already set out by React components and (the new) Context.

Unstated is built upon three pieces that all work together:

  1. Container
  2. <Subscribe>
  3. <Provider>

The idea is that the Container only keeps itself busy with the state. Using <Subscribe> you can link that state to your Component. The <Provider> wraps itself around everything, keeping things together.

import React from 'react';
import { render } from 'react-dom';
import { Provider, Subscribe, Container } from 'unstated';

type CounterState = {
  count: number

class CounterContainer extends Container<CounterState> {
  state = {
    count: 0

  increment() {
    this.setState({ count: this.state.count + 1 });

  decrement() {
    this.setState({ count: this.state.count - 1 });

function Counter() {
  return (
    <Subscribe to={[CounterContainer]}>
      {counter => (
          <button onClick={() => counter.decrement()}>-</button>
          <button onClick={() => counter.increment()}>+</button>

    <Counter />

Unstated — The setState of React State Management →
Unstated →

Published by Bramus!

Bramus is a frontend web developer from Belgium, working as a Chrome Developer Relations Engineer at Google. From the moment he discovered view-source at the age of 14 (way back in 1997), he fell in love with the web and has been tinkering with it ever since (more …)

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