@nozbe/watermelondb/src/utils/rx/publishReplayLatestWhileConnected/index.js

Build powerful React Native and React web apps that scale from hundreds to tens of thousands of records and remain fast

// @flow

import {
  type ConnectableObservable,
  type Observable,
  ReplaySubject,
  multicast,
} from '../__wmelonRxShim'

// Creates a Connectable observable, that, while connected, replays the latest emission
// upon subscription. When disconnected, the replay cache is cleared.

export default function publishReplayLatestWhileConnected<T>(
  source: Observable<T>,
): ConnectableObservable<T> {
  return source.pipe(multicast(() => new ReplaySubject(1)))
}