/**
 * Constructs and returns a hash string for the given set of className,
 * methodName, and arguments. The hash is deterministic: argument objects that
 * differ only in key insertion order produce the same signature, and circular
 * arguments are handled without throwing.
 *
 * @param className - name of the class the method belongs to
 * @param methodName - name of the method being called
 * @param args - arguments passed to the method
 * @returns {string} - hexadecimal hash string
 */
export declare function signature(className: string, methodName: string | symbol, args: readonly unknown[]): string;