import { CacheStorage } from 'backfill-cache';
import type { Logger } from 'backfill-logger';
import type { ContainerClient } from '@azure/storage-blob';
/**
 * A custom cache storage provider that uploads individual files and a tarball to Azure Blob Storage.
 */
export declare class CustomAzureCacheStorage extends CacheStorage {
    private readonly containerClient;
    private readonly tarStorage;
    constructor(containerClient: ContainerClient, logger: Logger, cwd: string);
    protected _fetch(hash: string): Promise<boolean>;
    protected _put(hash: string, filesToCache: string[]): Promise<void>;
}
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