import { Observable, OperatorFunction } from 'rxjs';
/**
 * Ensures that the first emitted observable will become *hot*. Latest succeeding emitted observable is queued until previous completes.
 * Any further emitted observable replaces the previously queued one.
 *
 * The observables are emitted as soon as they become *hot*.
 *
 * @typeParam T type of both the accepted and emitted observable
 * @category Operator
 */
export declare function concurrentOneAndLatest<T>(): OperatorFunction<Observable<T>, Observable<T>>;
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