node_modules/rxjs/_esm5/observable/ErrorObservable.js

/** PURE_IMPORTS_START .._Observable PURE_IMPORTS_END */
var __extends = (this && this.__extends) || function (d, b) {
    for (var p in b)
        if (b.hasOwnProperty(p))
            d[p] = b[p];
    function __() { this.constructor = d; }
    d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
};
import { Observable } from '../Observable';
/**
 * We need this JSDoc comment for affecting ESDoc.
 * @extends {Ignored}
 * @hide true
 */
export var ErrorObservable = /*@__PURE__*/ (/*@__PURE__*/ function (_super) {
    __extends(ErrorObservable, _super);
    function ErrorObservable(error, scheduler) {
        _super.call(this);
        this.error = error;
        this.scheduler = scheduler;
    }
    /**
     * Creates an Observable that emits no items to the Observer and immediately
     * emits an error notification.
     *
     * <span class="informal">Just emits 'error', and nothing else.
     * </span>
     *
     * <img src="./img/throw.png" width="100%">
     *
     * This static operator is useful for creating a simple Observable that only
     * emits the error notification. It can be used for composing with other
     * Observables, such as in a {@link mergeMap}.
     *
     * @example <caption>Emit the number 7, then emit an error.</caption>
     * var result = Rx.Observable.throw(new Error('oops!')).startWith(7);
     * result.subscribe(x => console.log(x), e => console.error(e));
     *
     * @example <caption>Map and flatten numbers to the sequence 'a', 'b', 'c', but throw an error for 13</caption>
     * var interval = Rx.Observable.interval(1000);
     * var result = interval.mergeMap(x =>
     *   x === 13 ?
     *     Rx.Observable.throw('Thirteens are bad') :
     *     Rx.Observable.of('a', 'b', 'c')
     * );
     * result.subscribe(x => console.log(x), e => console.error(e));
     *
     * @see {@link create}
     * @see {@link empty}
     * @see {@link never}
     * @see {@link of}
     *
     * @param {any} error The particular Error to pass to the error notification.
     * @param {Scheduler} [scheduler] A {@link IScheduler} to use for scheduling
     * the emission of the error notification.
     * @return {Observable} An error Observable: emits only the error notification
     * using the given error argument.
     * @static true
     * @name throw
     * @owner Observable
     */
    ErrorObservable.create = function (error, scheduler) {
        return new ErrorObservable(error, scheduler);
    };
    ErrorObservable.dispatch = function (arg) {
        var error = arg.error, subscriber = arg.subscriber;
        subscriber.error(error);
    };
    ErrorObservable.prototype._subscribe = function (subscriber) {
        var error = this.error;
        var scheduler = this.scheduler;
        subscriber.syncErrorThrowable = true;
        if (scheduler) {
            return scheduler.schedule(ErrorObservable.dispatch, 0, {
                error: error, subscriber: subscriber
            });
        }
        else {
            subscriber.error(error);
        }
    };
    return ErrorObservable;
}(Observable));
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