import type { Logger } from '@dexto/core';
import type { BlobStore, BlobInput, BlobMetadata, BlobReference, BlobData, BlobStats } from './types.js';
import type { InMemoryBlobStoreConfigInput } from './schemas.js';
/**
 * In-memory blob store implementation.
 *
 * Stores blobs in memory with content-based deduplication and size limits.
 * Suitable for development, testing, and scenarios where blob persistence
 * across restarts is not required.
 *
 * Features:
 * - Content-based deduplication (same as LocalBlobStore)
 * - Configurable size limits (per-blob and total)
 * - Automatic cleanup of old blobs
 * - MIME type detection
 * - Multi-format retrieval (base64, buffer, stream, data URI)
 *
 * Limitations:
 * - Data lost on restart (no persistence)
 * - Path format not supported (no filesystem)
 * - Memory usage proportional to blob size
 */
export type MemoryBlobStoreOptions = Omit<InMemoryBlobStoreConfigInput, 'type'>;
export declare class MemoryBlobStore implements BlobStore {
    private config;
    private blobs;
    private connected;
    private logger;
    constructor(options: MemoryBlobStoreOptions, logger: Logger);
    connect(): Promise<void>;
    disconnect(): Promise<void>;
    isConnected(): boolean;
    getStoreType(): string;
    store(input: BlobInput, metadata?: BlobMetadata): Promise<BlobReference>;
    retrieve(reference: string, format?: 'base64' | 'buffer' | 'path' | 'stream' | 'url'): Promise<BlobData>;
    exists(reference: string): Promise<boolean>;
    delete(reference: string): Promise<void>;
    cleanup(olderThan?: Date): Promise<number>;
    getStats(): Promise<BlobStats>;
    listBlobs(): Promise<BlobReference[]>;
    getStoragePath(): string | undefined;
    /**
     * Calculate total size of all blobs in memory
     */
    private getTotalSize;
    /**
     * Convert various input types to Buffer.
     * Copied from LocalBlobStore with minor adaptations.
     */
    private inputToBuffer;
    /**
     * Parse blob reference to extract ID.
     * Copied from LocalBlobStore.
     */
    private parseReference;
    /**
     * Detect MIME type from buffer content and/or filename.
     * Copied from LocalBlobStore.
     */
    private detectMimeType;
    /**
     * Check if buffer contains text content.
     * Copied from LocalBlobStore.
     */
    private isTextBuffer;
}
//# sourceMappingURL=memory-blob-store.d.ts.map