/**
 * Local Filesystem Storage Provider
 *
 * Default provider for development. Stores files on local disk.
 * Does not support signed URLs (returns file:// URLs instead).
 */
import type { StorageProvider, StorageObject, UploadResult, HealthCheckResult } from "./provider.js";
export interface LocalStorageConfig {
    /** Base directory for storage */
    basePath: string;
}
export declare class LocalStorageProvider implements StorageProvider {
    readonly name = "local";
    private basePath;
    constructor(config: LocalStorageConfig);
    upload(localPath: string, remotePath: string): Promise<UploadResult>;
    download(remotePath: string, localPath: string): Promise<void>;
    list(prefix: string): Promise<StorageObject[]>;
    private listRecursive;
    getSignedUrl(remotePath: string, _expiresInSeconds?: number): Promise<string>;
    healthCheck(): Promise<HealthCheckResult>;
    delete(remotePath: string): Promise<void>;
    exists(remotePath: string): Promise<boolean>;
    /**
     * Guess content type from file extension
     */
    private guessContentType;
}