import type { ShardPatternInfo, ShardUrl } from "../../schemas/index";
/**
 * Detect if model filename follows shard pattern (00001-of-0000x)
 */
export declare function detectShardedModel(filename: string): ShardPatternInfo;
/**
 * Generate list of shard filenames for a sharded model
 * Accepts any shard in the group
 *
 * @param shardName - Any shard filename in the group (e.g., "model-00002-of-00005.gguf")
 * @returns Array of all numbered shard filenames
 */
export declare function generateShardFilenames(shardName: string): string[];
/**
 * Parse pattern-based shard URL and generate all shard URLs with cache key
 * Works with patterns like: https://example.com/path/model-00002-of-00005.gguf
 *
 * @param shardUrl - Any shard URL in the group
 * @returns Object with shard URLs array and cache key
 */
export declare function parsePatternBasedShardUrl(shardUrl: string): {
    shardUrls: ShardUrl[];
    cacheKey: string;
};
/**
 * Extract tensor information from all shards and write to baseFilename.tensors.txt
 * Required for sharded models to enable incremental/async loading
 * @param shardDir - Directory containing the shard files
 * @param shardFilename - Filename of any shard (e.g., "model-00001-of-00002.gguf")
 * @returns Path to the created tensors.txt file
 * @throws If not a sharded model or extraction fails
 */
export declare function extractTensorsFromShards(shardDir: string, shardFilename: string): Promise<string>;
/**
 * Check if all numbered shard files exist
 * @param shardDir - Directory containing the shard files
 * @param shardFilename - Filename of any shard (e.g., "model-00001-of-00002.gguf")
 * @returns true if all numbered shards exist, false otherwise
 */
export declare function checkAllShardsExist(shardDir: string, shardFilename: string): Promise<boolean>;
/**
 * Validate that all shards and tensors.txt exist for a sharded model
 * @param shardDir - Directory containing the shard files
 * @param shardFilename - Filename of any shard (e.g., "model-00001-of-00002.gguf")
 * @returns true if all shards and tensors.txt exist, false otherwise
 */
export declare function validateShardedModelCache(shardDir: string, shardFilename: string): Promise<boolean>;
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