diff --git a/Overlay.ios.js b/Overlay.ios.js
index 19ae103..a6f22e7 100644
--- a/Overlay.ios.js
+++ b/Overlay.ios.js
@@ -5,69 +5,66 @@
 
 'use strict';
 
-var React = require('react');
-var {View, StyleSheet, requireNativeComponent} = require('react-native');
+import React, {Component, PropTypes} from 'react';
+import {View, requireNativeComponent, StyleSheet} from 'react-native';
 
 type Props = {
-    isVisible: boolean
+  isVisible: boolean;
 }
 
-var Overlay = React.createClass({
-    propTypes: {
-        /**
-         * When this property is set to `true`, the Overlay will appear on
-         * `UIWindowLevelStatusBar`, otherwise it will appear below that.
-         */
-        aboveStatusBar: React.PropTypes.bool,
+class Overlay extends Component {
+  constructor(props) {
+    super(props);
+  }
 
-        /**
-         * Determines the visibility of the Overlay. When it is not visible,
-         * an empty View is rendered.
-         */
-        isVisible: React.PropTypes.bool,
-    },
+  render() {
+    var {
+      isVisible,
+    } = this.props;
 
-    getDefaultProps(): Props
-    {
-        return {
-            aboveStatusBar: false,
-            isVisible: false,
-        }
-    },
+    if (this.props.isVisible) {
+      return (
+        <RNOverlay isVisible={true} style={styles.container} pointerEvents="none" aboveStatusBar={this.props.aboveStatusBar}>
+          {React.Children.map(this.props.children, React.cloneElement)}
+        </RNOverlay>
+      );
+    } else {
+      return <View />;
+    }
+  }
+}
+
+Overlay.propTypes = {
+  /**
+   * When this property is set to `true`, the Overlay will appear on
+   * `UIWindowLevelStatusBar`, otherwise it will appear below that.
+   */
+  aboveStatusBar: PropTypes.bool,
 
-    render()
-    {
-        if (this.props.isVisible) {
-            return (
-                <RNOverlay
-                    isVisible={true}
-                    style={styles.container}
-                    pointerEvents="none"
-                    aboveStatusBar={this.props.aboveStatusBar}>
-                    {
-                        React.Children.map(this.props.children, React.cloneElement)
-                    }
-                </RNOverlay>
-            )
-                ;
-        } else {
-            return <View/>;
-        }
-    },
-});
+  /**
+   * Determines the visibility of the Overlay. When it is not visible,
+   * an empty View is rendered.
+   */
+  isVisible: PropTypes.bool,
+};
+
+Overlay.defaultProps = {
+  aboveStatusBar: false,
+  isVisible: false,
+}
 
 var RNOverlay = requireNativeComponent('RNOverlay', Overlay);
 
 var styles = StyleSheet.create({
-    container: {
-        position: 'absolute',
-        top: 0,
-        bottom: 0,
-        left: 0,
-        right: 0,
-        borderWidth: 0,
-        backgroundColor: 'transparent',
-    },
-});
+  container: {
+    position: 'absolute',
+    top: 0,
+    bottom: 0,
+    left: 0,
+    right: 0,
+    borderWidth: 0,
+    backgroundColor: 'transparent',
+  },
+})
 
-module.exports = Overlay;
\ No newline at end of file
+module.exports = Overlay;