Clean up transitioner a bit, fix issue where state is invalid and warn

packages/stack/example/src/StackWithDrawer.js

@@ -0,0 +1,48 @@
+import React from 'react';
+import { Button, Text, View } from 'react-native';
+import { createStackNavigator } from 'react-navigation-stack';
+import { createDrawerNavigator } from 'react-navigation-drawer';
+import { createBottomTabNavigator } from 'react-navigation-tabs';
+
+function Menu({ navigation }) {
+  return (
+    <View style={{ flex: 1 }}>
+      <Button title="Open on top" onPress={() => navigation.navigate('Top')} />
+    </View>
+  );
+}
+
+class Fake extends React.Component {
+  render() {
+    return (
+      <View style={{ flex: 1, alignItems: 'center', justifyContent: 'center' }}>
+        <Text style={{ fontSize: 20 }}>
+          {this.props.navigation.getParam('title')}
+        </Text>
+      </View>
+    );
+  }
+}
+
+const Tab = createBottomTabNavigator({
+  Home: { screen: Fake, params: { title: 'Home' } },
+  Other: { screen: Fake, params: { title: 'Other' } },
+});
+
+const Drawer = createDrawerNavigator(
+  {
+    TabScreen: {
+      screen: Tab,
+    },
+  },
+  {
+    contentComponent: props => <Menu {...props} />,
+  }
+);
+
+const App = createStackNavigator({
+  Drawer: { screen: Drawer },
+  Top: { screen: Fake, params: { title: 'Top' } },
+});
+
+export default App;