@lifaon/rx-js-light/src/observable/built-in/from/with-notifications/iterable/async/from-async-iterator/from-async-iterator.mjs

Blazing fast Observables

import {STATIC_COMPLETE_NOTIFICATION} from "../../../../../../../misc/notifications/built-in/complete/complete-notification.constant.mjs";
import {createErrorNotification} from "../../../../../../../misc/notifications/built-in/error/create-error-notification.mjs";
import {createNextNotification} from "../../../../../../../misc/notifications/built-in/next/create-next-notification.mjs";
export function fromAsyncIterator(asyncIterator) {
  return emit => {
    let running = true;
    (async () => {
      while (running) {
        let result;
        try {
          result = await asyncIterator.next();
        } catch (error) {
          if (running) {
            emit(createErrorNotification(error));
          }
          return;
        }
        if (running) {
          if (result.done) {
            emit(STATIC_COMPLETE_NOTIFICATION);
            return;
          } else {
            emit(createNextNotification(result.value));
          }
        }
      }
      if (('return' in asyncIterator)) {
        asyncIterator.return(void 0);
      }
    })();
    return () => {
      running = false;
    };
  };
}