/**
 * Computes a 31-based polynomial rolling hash of the input string,
 * and returns a base36-encoded identifier of the given length.
 *
 * This method mimics the behavior of Java's `String.hashCode()`,
 * ensuring fast, deterministic, and compact hash generation.
 *
 * Note: This hash is **not cryptographically secure**, and is best suited
 * for quick identification or lookup purposes (e.g. cache keys, short IDs).
 *
 * @param target - The input string to hash.
 * @param length - Desired length of the result identifier (default: 7, max: 7).
 * @returns A base36-encoded hash string of the specified length.
 */
export declare const polynomialHash: (target: string, length?: number) => string;