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