Reactive native : Uncaught Error: Invariant Violation: Element type is invalid: expected a string (for built-in components) or a class/function but got: object

This is hard to trace but essentially there was a difference in terms of having bracket in your code, for example,


import Navigator from './tabs/home';

// Ok, If you have export default defined in your js


import { Navigator} from './tabs/home';

// Works,f you js file has more than a default export.

Apparently this has to do with "De-structuring" object in javascript.

For example, say you have your components export that looks like this :-

export const Tabs = createMaterialTopTabNavigator({
Home: Home,
About: Settings,
Contact: Settings
tabBarOptions: {
activeTintColor: '#000',
inactiveTintColor: 'gray',
style: {
backgroundColor: '#fff',
indicatorStyle: {
backgroundColor: '#000',

This works.... .

import { Tabs } from './tabs/home';


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