import { Contracts } from "@arkecosystem/core-kernel";
import { Interfaces } from "@arkecosystem/crypto";
export declare class ChunkCache implements Contracts.P2P.ChunkCache {
    /**
     * If downloading some chunk fails but nevertheless we manage to download higher chunks,
     * then they are stored here for later retrieval.
     */
    private downloadedChunksCache;
    /**
     * Maximum number of entries to keep in `downloadedChunksCache`.
     * At 400 blocks per chunk, 100 chunks would amount to 40k blocks.
     * Chunks are removed by First in first out method.
     */
    private downloadedChunksCacheMax;
    has(key: string): boolean;
    get(key: string): Interfaces.IBlockData[];
    set(key: string, data: Interfaces.IBlockData[]): void;
    remove(key: string): void;
}
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