import type { Readable } from 'node:stream';
interface FileHandler {
    init: () => Promise<void>;
    put: (stream: Readable) => Promise<{
        checksum: string;
        size: number;
    }>;
    get: (checksum: string) => Readable;
    remove: (checksum: string) => Promise<void>;
}
declare class FileSystemHandler implements FileHandler {
    #private;
    init(): Promise<void>;
    get(checksum: string): import("node:fs").ReadStream;
    exists(checksum: string): Promise<boolean>;
    fileSize(checksum: string): Promise<number>;
    put(stream: Readable): Promise<{
        checksum: string;
        size: number;
    }>;
    remove(checksum: string): Promise<void>;
}
export declare const fileHandler: FileSystemHandler;
export {};