import { ApiClient } from "@lodestar/api";
import { ForkName } from "@lodestar/params";
import { ExecutionPayload, LightClientHeader } from "@lodestar/types";
import { Logger } from "@lodestar/utils";
/**
 * The in-memory store for the execution payloads to be used to verify the proofs
 */
export declare class PayloadStore {
    private opts;
    private finalizedRoots;
    private unfinalizedRoots;
    private payloads;
    private latestBlockRoot;
    constructor(opts: {
        api: ApiClient;
        logger: Logger;
    });
    get finalized(): ExecutionPayload | undefined;
    get latest(): ExecutionPayload | undefined;
    get(blockId: number | string): Promise<ExecutionPayload | undefined>;
    protected getOrFetchFinalizedPayload(blockNumber: number): Promise<ExecutionPayload | undefined>;
    set(payload: ExecutionPayload, slot: number, finalized: boolean): void;
    processLCHeader(header: LightClientHeader<ForkName.capella>, finalized?: boolean): Promise<void>;
    prune(): void;
}
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