How to Create Bridge in React Native for iOS and Android?

@objc
Func getStatus(_ callback : RCTResponseSenderBlock){
callback
([NSNull(),Bulb.isOn])
}
@objc
Static func requireMainQueueSetup() -> {
return true
}
}
getStatus() method receives a callback parameter that we'll pass from your JavaScript code. and that we have called the
callback with an array of values, which can be exposed in JavaScript. we've passed NSNull() because the first element,
which we've considered as a mistake within the callback.
And then finally update the React Code:
Import React , {Component} from ‘react;
Import {Text,View,NativeModules,TouchableOpacity} from ‘react-native;
Export default class App extends Component {
constructor(props){
super(props);
This.state = {isOn : false};
this.updateStatus();
}
turnOn =() => {
NativeModules.Bulb.turnOn();
this.updateStatus();
updateStatus = () => {
NativeModules.Bulb.getstatus((error,isOn ) => {
this.setState({ isOn : isOn)};
)}