import { OperatorFunction } from 'rxjs';
import { IChangeSet } from '../IChangeSet';
import { DistinctChangeSet } from '../DistinctChangeSet';
/**
 * Selects distinct values from the source, using the specified value selector
 * @typeparam TObject The type of the source
 * @typeparam TValue The type of the destination
 * @param source The source
 * @param valueSelector The transform factory
 */
export declare function distinctValues<TObject, TKey, TValue>(valueSelector: (value: TObject) => TValue): OperatorFunction<IChangeSet<TObject, TKey>, DistinctChangeSet<TValue>>;