multitude/dist/push/classes/Subject.js

Comprehensive streams for push and pull

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.Subject = void 0;

var _helpers = require("../../helpers");

var _from = require("../creators/from");

var _tap = require("../operators/tap");

var _Multicast = require("./Multicast");

var _pipettes = require("pipettes");

/** @ignore */
const $observer = Symbol('observer');

class Subject extends _Multicast.Multicast {
  static of(item, options) {
    const subject = new this(options);
    subject.next(item);
    return subject;
  }

  static from(item, options) {
    if (item.constructor === this) return item;
    const observable = (0, _from.from)(item);
    const subject = new this(options);
    let subscription;
    (0, _pipettes.into)(observable, (0, _tap.tap)({
      start: subs => subscription = subs
    })).subscribe(subject);
    subject.subscribe({
      error: subscription.unsubscribe.bind(subscription),
      complete: subscription.unsubscribe.bind(subscription)
    });
    return subject;
  }

  constructor(options) {
    let observer;
    super(obs => {
      observer = obs;
    }, options, {
      onCreate: connect => connect()
    });

    _helpers.Accessor.define(this, $observer, observer);
  }

  next(value) {
    return this[$observer].next(value);
  }

  error(error) {
    return this[$observer].error(error);
  }

  complete() {
    return this[$observer].complete();
  }

}

exports.Subject = Subject;
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