import { BehaviorSubject, Observable } from 'rxjs';
import { Cardano, TipOrOrigin } from '@cardano-sdk/core';
import { StabilityWindowBuffer, UnifiedExtChainSyncObservable, WithNetworkInfo } from '../types';
export declare class InMemoryStabilityWindowBuffer implements StabilityWindowBuffer {
    #private;
    readonly tip$: BehaviorSubject<TipOrOrigin>;
    getBlock(id: Cardano.BlockId): Observable<Cardano.Block | null>;
    handleEvents<E extends WithNetworkInfo>(): (evt$: UnifiedExtChainSyncObservable<E>) => Observable<import("../types").ExtChainSyncEvent<E, E & import("../types").WithBlock>>;
}
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