Flux stores and components decoupled w/ immutable JS.

gistfile1.js

var Actions = Flux.createActions(
  INCR_COUNT, DECR_COUNT
);

var CountStore = Flux.createStore(
  INCR_COUNT: (_, state) => state.update('count', count => count + 1)
  DECR_COUNT: (_, state) => state.update('count', count => count - 1)
);

var App = React.createClass({
  render: function () {
    return (
      <div>
        <h1>Count is {this.state.count}</h1>
        <button onClick={Actions.INCR_COUNT}>Increment Count</button>
        <button onClick={Actions.DECR_COUNT}>Decrement Count</button>
      </div>
    );
  }
});

Flux.render(<App />, {count: 0}, document.body);