/**
 * djb2 hash algorithm - simple and effective string hash function
 * @param str - String to hash
 * @returns 32-bit unsigned integer hash
 */
export declare const hashString: (str: string) => number;
/**
 * Get partition index from a key using consistent hashing
 * Handles negative modulo correctly and ensures result is in [0, numPartitions)
 *
 * @param key - The shard key
 * @param numPartitions - Number of partitions
 * @returns Partition index in range [0, numPartitions)
 */
export declare const getPartitionIndex: (key: string, numPartitions: number) => number;