gistfile1.js

var React = require('react-native');
var tweenState = require('react-tween-state');
var {
    View,
    Text
} = React;

var Test = React.createClass({
  mixins: [tweenState.Mixin],

  getInitialState: function() {
    return {counter: 0};
  },

  componentDidMount: function() {
    this.count();
  },

  count: function() {
    // This is the API you'll probably use 90% of the time.
    this.tweenState('counter', {
      duration: 500,
      beginValue: 0,
      endValue: this.state.counter + 500,
      onEnd: this.count
    });

    console.log("Called");
  },

  render: function() {
    return (
      <View style={{justifyContent: 'center', alignItems: 'center', flex: 1}}>
        <Text>easeOutQuad on a counter! {Math.round(this.getTweeningValue('counter'))}</Text>
      </View>
    );
  }
});

module.exports = Test;