examples/example-sync.md

<div id="react-content"></div>

import React, { Component } from 'react';
import ReactDOM from 'react-dom';
import Rcf from 'index.js';


class A extends Component {
  handleClick = () => {
    this.props.store1.minus2(2);
  }
  render() {
    return <div>

      A:

      {this.props.store1.a}

      <button onClick={this.handleClick}>
        click
      </button>

    </div>;
  }

}


class B extends Component {
  render() {
    return <div>

      B:

      {this.props.store1.a} 

    </div>;
  }

}


const store = {
  store1: {
    a: 1,
    minus2: (step, e) => {
      return e.store.minus(step, e);
    },
    minus: (step, e) => ({
      a: e.store.a - step
    })
  },
};

ReactDOM.render(<div>

  <Rcf store={store}>
    <A />
    <B />
  </Rcf>

  <Rcf store={store}>
    <B />
  </Rcf>

</div>, 

document.getElementById('react-content'));