import { ACSState } from '../../types';
import { ResolvedAcsOptions } from '../../service';
import { BaseACSCache } from './base';
export declare class ACSCache extends BaseACSCache {
    protected readonly state: ACSState;
    /**
     * Returns the initial snapshot of the active contract set.
     * Contains the base state captured at a specific ledger offset.
     */
    private get initial();
    /**
     * Returns the incremental updates applied after the initial snapshot.
     * Contains created and archived events that occurred since the initial state.
     */
    private get updates();
    update(options: ResolvedAcsOptions): Promise<void>;
    calculateAt(offset: number): ({
        workflowId?: string;
        contractEntry?: import("../../../../ledger-client-types/dist/generated-clients/openapi-3.4.12").components["schemas"]["JsContractEntry"];
    } & {
        workflowId?: string;
        contractEntry?: import("../../../../ledger-client-types/dist/generated-clients/openapi-3.5.1").components["schemas"]["JsContractEntry"];
        streamContinuationToken?: string;
    })[];
    /**
     * Initializes the cache state by fetching the active contract set at the specified offset.
     * Clears any existing updates and archived contract tracking.
     */
    private initState;
    /**
     * Compacts the cache by moving the initial snapshot forward to a more recent offset.
     * Applies accumulated updates to create a new initial state and discards old events.
     * Improves performance by reducing the number of updates to process on each query.
     */
    private prune;
    /**
     * Fetches ledger updates between two offsets.
     * Queries the ledger API for transactions containing contract create and archive events.
     */
    private fetchUpdates;
    /**
     * Extracts contract creation and archival events from raw ledger updates.
     * Processes transaction and checkpoint updates to build a list of relevant contract events.
     * Tracks the highest offset seen across all updates.
     */
    private extractEvents;
}
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