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✏️ Editing: Subscriber.js

"use strict";
var __extends = (this && this.__extends) || (function () {
    var extendStatics = function (d, b) {
        extendStatics = Object.setPrototypeOf ||
            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
            function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };
        return extendStatics(d, b);
    };
    return function (d, b) {
        if (typeof b !== "function" && b !== null)
            throw new TypeError("Class extends value " + String(b) + " is not a constructor or null");
        extendStatics(d, b);
        function __() { this.constructor = d; }
        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
    };
})();
var __read = (this && this.__read) || function (o, n) {
    var m = typeof Symbol === "function" && o[Symbol.iterator];
    if (!m) return o;
    var i = m.call(o), r, ar = [], e;
    try {
        while ((n === void 0 || n-- > 0) && !(r = i.next()).done) ar.push(r.value);
    }
    catch (error) { e = { error: error }; }
    finally {
        try {
            if (r && !r.done && (m = i["return"])) m.call(i);
        }
        finally { if (e) throw e.error; }
    }
    return ar;
};
var __spreadArray = (this && this.__spreadArray) || function (to, from) {
    for (var i = 0, il = from.length, j = to.length; i < il; i++, j++)
        to[j] = from[i];
    return to;
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.EMPTY_OBSERVER = exports.SafeSubscriber = exports.Subscriber = void 0;
var isFunction_1 = require("./util/isFunction");
var Subscription_1 = require("./Subscription");
var config_1 = require("./config");
var reportUnhandledError_1 = require("./util/reportUnhandledError");
var noop_1 = require("./util/noop");
var NotificationFactories_1 = require("./NotificationFactories");
var timeoutProvider_1 = require("./scheduler/timeoutProvider");
var Subscriber = (function (_super) {
    __extends(Subscriber, _super);
    function Subscriber(destination) {
        var _this = _super.call(this) || this;
        _this.isStopped = false;
        if (destination) {
            _this.destination = destination;
            if (Subscription_1.isSubscription(destination)) {
                destination.add(_this);
            }
        }
        else {
            _this.destination = exports.EMPTY_OBSERVER;
        }
        return _this;
    }
    Subscriber.create = function (next, error, complete) {
        return new SafeSubscriber(next, error, complete);
    };
    Subscriber.prototype.next = function (value) {
        if (this.isStopped) {
            handleStoppedNotification(NotificationFactories_1.nextNotification(value), this);
        }
        else {
            this._next(value);
        }
    };
    Subscriber.prototype.error = function (err) {
        if (this.isStopped) {
            handleStoppedNotification(NotificationFactories_1.errorNotification(err), this);
        }
        else {
            this.isStopped = true;
            this._error(err);
        }
    };
    Subscriber.prototype.complete = function () {
        if (this.isStopped) {
            handleStoppedNotification(NotificationFactories_1.COMPLETE_NOTIFICATION, this);
        }
        else {
            this.isStopped = true;
            this._complete();
        }
    };
    Subscriber.prototype.unsubscribe = function () {
        if (!this.closed) {
            this.isStopped = true;
            _super.prototype.unsubscribe.call(this);
            this.destination = null;
        }
    };
    Subscriber.prototype._next = function (value) {
        this.destination.next(value);
    };
    Subscriber.prototype._error = function (err) {
        try {
            this.destination.error(err);
        }
        finally {
            this.unsubscribe();
        }
    };
    Subscriber.prototype._complete = function () {
        try {
            this.destination.complete();
        }
        finally {
            this.unsubscribe();
        }
    };
    return Subscriber;
}(Subscription_1.Subscription));
exports.Subscriber = Subscriber;
var SafeSubscriber = (function (_super) {
    __extends(SafeSubscriber, _super);
    function SafeSubscriber(observerOrNext, error, complete) {
        var _this = _super.call(this) || this;
        var next;
        if (isFunction_1.isFunction(observerOrNext)) {
            next = observerOrNext;
        }
        else if (observerOrNext) {
            (next = observerOrNext.next, error = observerOrNext.error, complete = observerOrNext.complete);
            var context_1;
            if (_this && config_1.config.useDeprecatedNextContext) {
                context_1 = Object.create(observerOrNext);
                context_1.unsubscribe = function () { return _this.unsubscribe(); };
            }
            else {
                context_1 = observerOrNext;
            }
            next = next === null || next === void 0 ? void 0 : next.bind(context_1);
            error = error === null || error === void 0 ? void 0 : error.bind(context_1);
            complete = complete === null || complete === void 0 ? void 0 : complete.bind(context_1);
        }
        _this.destination = {
            next: next ? wrapForErrorHandling(next, _this) : noop_1.noop,
            error: wrapForErrorHandling(error !== null && error !== void 0 ? error : defaultErrorHandler, _this),
            complete: complete ? wrapForErrorHandling(complete, _this) : noop_1.noop,
        };
        return _this;
    }
    return SafeSubscriber;
}(Subscriber));
exports.SafeSubscriber = SafeSubscriber;
function wrapForErrorHandling(handler, instance) {
    return function () {
        var args = [];
        for (var _i = 0; _i < arguments.length; _i++) {
            args[_i] = arguments[_i];
        }
        try {
            handler.apply(void 0, __spreadArray([], __read(args)));
        }
        catch (err) {
            if (config_1.config.useDeprecatedSynchronousErrorHandling) {
                if (instance._syncErrorHack_isSubscribing) {
                    instance.__syncError = err;
                }
                else {
                    throw err;
                }
            }
            else {
                reportUnhandledError_1.reportUnhandledError(err);
            }
        }
    };
}
function defaultErrorHandler(err) {
    throw err;
}
function handleStoppedNotification(notification, subscriber) {
    var onStoppedNotification = config_1.config.onStoppedNotification;
    onStoppedNotification && timeoutProvider_1.timeoutProvider.setTimeout(function () { return onStoppedNotification(notification, subscriber); });
}
exports.EMPTY_OBSERVER = {
    closed: true,
    next: noop_1.noop,
    error: defaultErrorHandler,
    complete: noop_1.noop,
};
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MR SKB