App.js

App.js

import timeoutfix from './src/time-out-fix-util';
console.disableYellowBox = true;

class App extends Component {
  async componentWillMount() {
    timeoutfix();
  }
 
  // in your render method return what you normall would just make sure 
 // timeoutfix() is called in async componentWillMount()
 
  render() {
    ...//return whatever jsx you are currently returning
  }
}

export default App;