/*!
 * Copyright (c) Microsoft Corporation and contributors. All rights reserved.
 * Licensed under the MIT License.
 */
import type { IDocumentStorageService, ISnapshotTree, IVersion } from "@fluidframework/driver-definitions/internal";
import type { IFileSnapshot } from "@fluidframework/replay-driver/internal";
import { ReadDocumentStorageServiceBase } from "@fluidframework/replay-driver/internal";
/**
 * @internal
 */
export declare const FileStorageDocumentName = "FileStorageDocId";
/**
 * Document storage service for the file driver.
 * @internal
 */
export declare class FluidFetchReader extends ReadDocumentStorageServiceBase implements IDocumentStorageService {
    private readonly path;
    private readonly versionName?;
    protected docTree: ISnapshotTree | null;
    constructor(path: string, versionName?: string | undefined);
    /**
     * Read the file and returns the snapshot tree.
     * @param version - The version contains the path of the file which contains the snapshot tree.
     */
    getSnapshotTree(version?: IVersion): Promise<ISnapshotTree | null>;
    /**
     * Gets the path of the snapshot tree to be read.
     * @param versionId - version ID.
     * @param count - Number of versions to be returned.
     */
    getVersions(versionId: string | null, count: number): Promise<IVersion[]>;
    readBlob(sha: string): Promise<ArrayBufferLike>;
}
/**
 * @internal
 */
export interface ISnapshotWriterStorage extends IDocumentStorageService {
    onSnapshotHandler(snapshot: IFileSnapshot): void;
    reset(): void;
}
/**
 * Constructor type for creating {@link @fluidframework/driver-definitions#IDocumentStorageService} instances.
 *
 * @internal
 */
export type ReaderConstructor = new (...args: any[]) => IDocumentStorageService;
/**
 * @internal
 */
export declare const FileSnapshotWriterClassFactory: <TBase extends ReaderConstructor>(Base: TBase) => TBase & (new (...args: any[]) => ISnapshotWriterStorage);
/**
 * @internal
 */
export declare const FluidFetchReaderFileSnapshotWriter: typeof FluidFetchReader & (new (...args: any[]) => ISnapshotWriterStorage);
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