import type { MonoTypeOperatorFunction } from 'rxjs';
/**
 * Shortcut alias for `pipe(startWith(initial), distinctUntilChanged())`
 * @param initial The initial value
 * @param comparator `distinctUntilChanged` comparator
 * @kind Operator
 * @since 2.3.0
 * @see https://rxjs.dev/api/operators/startWith
 * @see https://rxjs.dev/api/operators/distinctUntilChanged
 */
export declare function distinctWithInitial<T>(initial: T, comparator?: (previous: T, current: T) => boolean): MonoTypeOperatorFunction<T>;
/**
 * Shortcut alias for `pipe(startWith(initial), distinctUntilChanged())`
 * @param initial The initial value
 * @param comparator `distinctUntilChanged` comparator
 * @param keySelector `distinctUntilChanged` key selector
 * @kind Operator
 * @since 2.3.0
 * @see https://rxjs.dev/api/operators/startWith
 * @see https://rxjs.dev/api/operators/distinctUntilChanged
 */
export declare function distinctWithInitial<T, K>(initial: T, comparator: (previous: K, current: K) => boolean, keySelector: (value: T) => K): MonoTypeOperatorFunction<T>;