import { AttachmentData, EncodingType, LocalStorageAdapter } from '@powersync/common';
/**
 * IndexDBFileSystemStorageAdapter implements LocalStorageAdapter using IndexedDB.
 * Suitable for web browsers and web-based environments.
 */
export declare class IndexDBFileSystemStorageAdapter implements LocalStorageAdapter {
    private databaseName;
    private dbPromise;
    constructor(databaseName?: string);
    initialize(): Promise<void>;
    clear(): Promise<void>;
    getLocalUri(filename: string): string;
    private getStore;
    saveFile(filePath: string, data: AttachmentData): Promise<number>;
    readFile(fileUri: string, options?: {
        encoding?: EncodingType;
        mediaType?: string;
    }): Promise<ArrayBuffer>;
    deleteFile(uri: string, options?: {
        filename?: string;
    }): Promise<void>;
    fileExists(fileUri: string): Promise<boolean>;
    makeDir(path: string): Promise<void>;
    rmDir(path: string): Promise<void>;
}