10 lines
604 B
TypeScript
10 lines
604 B
TypeScript
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import { Observable } from '../Observable';
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/**
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* Returns an Observable that emits the item at the specified index in the source Observable.
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* If default is given, missing indices will output this value on next; otherwise, outputs error.
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* @param {number} index the index of the value to be retrieved.
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* @param {any} [defaultValue] the default value returned for missing indices.
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* @returns {Observable} an Observable that emits a single item, if it is found. Otherwise, will emit the default value if given.
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*/
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export declare function elementAt<T>(index: number, defaultValue?: T): Observable<T>;
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