/**
 * Storage Backend Factory
 *
 * Auto-detects the best storage backend for the current environment:
 * - Bun/Node.js: BunStorageBackend (file system)
 * - Modern browsers: OPFSBackend (Origin Private File System)
 * - Fallback: MemoryBackend (in-memory)
 */
import type { StorageBackend, StorageOptions } from './StorageBackend.js';
export type StorageType = 'auto' | 'bun' | 'opfs' | 'memory';
export interface CreateStorageOptions extends StorageOptions {
    /** Force a specific storage type */
    type?: StorageType;
}
/**
 * Detect the current runtime environment
 */
export declare function detectEnvironment(): 'bun' | 'browser' | 'node' | 'unknown';
/**
 * Create the optimal storage backend for the current environment
 *
 * @param options Configuration options
 * @returns Initialized storage backend
 *
 * @example
 * ```typescript
 * // Auto-detect best backend
 * const storage = await createStorageBackend();
 *
 * // Force specific backend
 * const bunStorage = await createStorageBackend({ type: 'bun', path: './data' });
 * const memStorage = await createStorageBackend({ type: 'memory' });
 * ```
 */
export declare function createStorageBackend(options?: CreateStorageOptions): Promise<StorageBackend>;
/**
 * Get the recommended storage type for the current environment
 */
export declare function getRecommendedStorageType(): StorageType;
/**
 * Check if a specific storage type is available
 */
export declare function isStorageTypeAvailable(type: StorageType): boolean;
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