wed/standalone/lib/external/rxjs/internal/observable/throwError.js

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define(function(require,exports,module){

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var Observable_1 = require("../Observable");
/**
 * 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>
 * import { throwError, concat, of } from 'rxjs/create';
 *
 * const result = concat(of(7), throwError(new Error('oops!')));
 * 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>
 * import { throwError, interval, of } from 'rxjs/create';
 * import { mergeMap } from 'rxjs/operators';
 *
 * interval(1000).pipe(
 *   mergeMap(x => x === 13 ?
 *     throwError('Thirteens are bad') :
 *     of('a', 'b', 'c')
 *   )
 * ).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
 */
function throwError(error, scheduler) {
    if (!scheduler) {
        return new Observable_1.Observable(function (subscriber) { return subscriber.error(error); });
    }
    else {
        return new Observable_1.Observable(function (subscriber) { return scheduler.schedule(dispatch, 0, { error: error, subscriber: subscriber }); });
    }
}
exports.throwError = throwError;
function dispatch(_a) {
    var error = _a.error, subscriber = _a.subscriber;
    subscriber.error(error);
}
//# sourceMappingURL=throwError.js.map
return module.exports;

});