/**
 * Chunk Fetcher Module
 * Handles fetching and caching of individual chunks
 *
 * Note: This module provides reference implementations.
 * The actual code is inlined into the generated Service Worker by serviceWorkerGenerator.ts
 */
import type { StreamConfig } from './types.js';
/**
 * Fetches a chunk with cache-first strategy
 * @param chunkUrlPath - URL path to the chunk (e.g., /content/txid_vout)
 * @param config - Stream configuration with baseUrl and cacheName
 * @returns ArrayBuffer containing the chunk data
 */
export declare function fetchChunk(chunkUrlPath: string, config: StreamConfig): Promise<ArrayBuffer>;
/**
 * Prefetches chunks in the background to improve seeking performance
 * @param chunkUrlPaths - Array of chunk URL paths to prefetch
 * @param config - Stream configuration
 */
export declare function prefetchChunks(chunkUrlPaths: string[], config: StreamConfig): Promise<void>;
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