import { Subscriber } from '../Subscriber';
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import { rxSubscriber as rxSubscriberSymbol } from '../symbol/rxSubscriber';
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import { empty as emptyObserver } from '../Observer';
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import { PartialObserver } from '../types';
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export function toSubscriber<T>(
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nextOrObserver?: PartialObserver<T> | ((value: T) => void),
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error?: (error: any) => void,
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complete?: () => void): Subscriber<T> {
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if (nextOrObserver) {
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if (nextOrObserver instanceof Subscriber) {
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return (<Subscriber<T>> nextOrObserver);
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}
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if (nextOrObserver[rxSubscriberSymbol]) {
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return nextOrObserver[rxSubscriberSymbol]();
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}
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}
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if (!nextOrObserver && !error && !complete) {
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return new Subscriber(emptyObserver);
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}
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return new Subscriber(nextOrObserver, error, complete);
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}
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