export type AttachmentData = ArrayBuffer | string;
export declare enum EncodingType {
    UTF8 = "utf8",
    Base64 = "base64"
}
/**
 * LocalStorageAdapter defines the interface for local file storage operations.
 * Implementations handle file I/O, directory management, and storage initialization.
 *
 * @experimental
 * @alpha This is currently experimental and may change without a major version bump.
 */
export interface LocalStorageAdapter {
    /**
     * Saves data to a local file.
     * @param filePath Path where the file will be stored
     * @param data Data to store (ArrayBuffer, Blob, or string)
     * @returns Number of bytes written
     */
    saveFile(filePath: string, data: AttachmentData): Promise<number>;
    /**
     * Retrieves file data as an ArrayBuffer.
     * @param filePath Path where the file is stored
     * @returns ArrayBuffer containing the file data
     */
    readFile(filePath: string): Promise<ArrayBuffer>;
    /**
     * Deletes the file at the given path.
     * @param filePath Path where the file is stored
     */
    deleteFile(filePath: string): Promise<void>;
    /**
     * Checks if a file exists at the given path.
     * @param filePath Path where the file is stored
     * @returns True if the file exists, false otherwise
     */
    fileExists(filePath: string): Promise<boolean>;
    /**
     * Creates a directory at the specified path.
     * @param path The full path to the directory
     */
    makeDir(path: string): Promise<void>;
    /**
     * Removes a directory at the specified path.
     * @param path The full path to the directory
     */
    rmDir(path: string): Promise<void>;
    /**
     * Initializes the storage adapter (e.g., creating necessary directories).
     */
    initialize(): Promise<void>;
    /**
     * Clears all files in the storage.
     */
    clear(): Promise<void>;
    /**
     * Returns the file path for the provided filename in the storage directory.
     * @param filename The filename to get the path for
     * @returns The full file path
     */
    getLocalUri(filename: string): string;
}