@yoroi/common/lib/module/observer/observer.js

The Common package of Yoroi SDK

import { freeze } from 'immer';
import { Subject } from 'rxjs';
export const observerMaker = () => {
  const eventSubject = new Subject();
  return freeze({
    subscribe: observer => {
      return eventSubject.subscribe(observer);
    },
    unsubscribe: subscription => {
      subscription.unsubscribe();
    },
    notify: value => {
      eventSubject.next(value);
    },
    destroy: () => {
      eventSubject.complete();
    },
    observable: eventSubject.asObservable()
  });
};
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