@amityco/ts-sdk-react-native/src/client/utils/onOffline.ts

Amity Social Cloud Typescript SDK

export const onOffline = (callback: () => void) => {
  if (typeof window !== 'undefined' && window.addEventListener) {
    window.addEventListener('offline', callback);
    return () => window.removeEventListener('offline', callback);
  }

  if (typeof document !== 'undefined' && document.addEventListener) {
    document.addEventListener('offline', callback);
    return () => document.removeEventListener('offline', callback);
  }

  //  @TODO: Please update code below to follow our coding conventions and our TS rules
  if (typeof navigator !== 'undefined' && navigator.product === 'ReactNative') {
    // eslint-disable-next-line @typescript-eslint/no-empty-function
    let unsubscribeFn = () => {};

    import('@react-native-community/netinfo').then(NetInfo => {
      unsubscribeFn = NetInfo.addEventListener(state => {
        if (state.isConnected) return;
        callback();
      });
    });

    return () => {
      unsubscribeFn();
    };
  }

  // Handle unsupported environment
  console.error('Unsupported environment');
  return () => console.error('Unsupported environment');
};