multitude/dist-src/push/creators/defer.js

Comprehensive streams for push and pull

function asyncGeneratorStep(gen, resolve, reject, _next, _throw, key, arg) { try { var info = gen[key](arg); var value = info.value; } catch (error) { reject(error); return; } if (info.done) { resolve(value); } else { Promise.resolve(value).then(_next, _throw); } }

function _asyncToGenerator(fn) { return function () { var self = this, args = arguments; return new Promise(function (resolve, reject) { var gen = fn.apply(self, args); function _next(value) { asyncGeneratorStep(gen, resolve, reject, _next, _throw, "next", value); } function _throw(err) { asyncGeneratorStep(gen, resolve, reject, _next, _throw, "throw", err); } _next(undefined); }); }; }

import { Observable } from "../classes/Observable.js";
export function defer(deferral) {
  return new Observable(obs => {
    Promise.resolve().then( /*#__PURE__*/_asyncToGenerator(function* () {
      return deferral();
    })).then(value => {
      obs.next(value);
      obs.complete();
    }, error => {
      obs.error(error);
    });
  });
}