@reactivex/ix-es2015-cjs/asynciterable/pipe/distinctuntilchanged.d.ts

import { MonoTypeOperatorAsyncFunction } from '../../interfaces';
export declare function distinctUntilChanged<TSource, TKey>(keySelector?: (value: TSource) => TKey | Promise<TKey>, comparer?: (first: TKey, second: TKey) => boolean | Promise<boolean>): MonoTypeOperatorAsyncFunction<TSource>;