React Native Easing animations

React Native Easings

'use strict';

var React = require('react-native');
var {
  AppRegistry,
  StyleSheet,
  Text,
  View,
  Easing,
  Animated,
  TouchableHighlight,
  ScrollView
} = React;

class SampleApp extends React.Component {
  
  constructor () {
  	super()
    this.animatedValue = new Animated.Value(0)
  }
  
  animate (easing) {
    this.animatedValue.setValue(0)
      Animated.timing(
        this.animatedValue,
        {
          toValue: 1,
          duration: 1000,
          easing
        }
    ).start()
  }
  
  render () {
    const marginLeft = this.animatedValue.interpolate({
      inputRange: [0, 1],
      outputRange: [0, 260]
    })
    return (
      <View style={styles.container}>
        <Animated.View style={[styles.block, {marginLeft} ]} />
        <ScrollView>
      		<Text style={{textAlign: 'center'}}>Scroll up for more animations</Text>
      		<Button easing='Bounce' onPress={this.animate.bind(this, Easing.bounce)} />
    		  <Button easing='Cubic' onPress={this.animate.bind(this, Easing.cubic)} />
          <Button easing='Back' onPress={this.animate.bind(this, Easing.back(2))} />
          <Button easing='Elastic' onPress={this.animate.bind(this, Easing.elastic(2))} />
      	  <Button easing='Ease' onPress={this.animate.bind(this, Easing.ease)} />
          <Button easing='InOut' onPress={this.animate.bind(this, Easing.inOut(Easing.quad))} />
          <Button easing='In' onPress={this.animate.bind(this, Easing.in(Easing.quad))} />
          <Button easing='Out' onPress={this.animate.bind(this, Easing.out(Easing.quad))} />
          <Button easing='Sin' onPress={this.animate.bind(this, Easing.sin)} />
				  <Button easing='Linear' onPress={this.animate.bind(this, Easing.linear)} /> 
      	  <Button easing='Quad' onPress={this.animate.bind(this, Easing.quad)} />
      	</ScrollView>
      </View>
    );
  }
}

const Button = ({onPress, easing}) => (
	<TouchableHighlight style={styles.button}  onPress={onPress}>
    <Text>{easing}</Text>
  </TouchableHighlight>
)

var styles = StyleSheet.create({
  container: {
    flex: 1,
    marginTop: 60
  },
  button: {
  	height: 60,
    marginLeft: 10,
    marginRight: 10,
    backgroundColor: '#ededed',
    justifyContent: 'center',
    alignItems: 'center',
    marginTop: 10
  },
  block: {
  	width: 50,
    height: 50,
    backgroundColor: 'red'
  }
});

AppRegistry.registerComponent('SampleApp', () => SampleApp);

'Easing.out', 'Easing.back' and 'Easing.inOut' seems have no effect, what else works fine, I have no idea why this happens
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