import { Headers, Subject } from '../types/index.js';
export declare function randomId(): string;
export declare function kebabCase(s: string): string;
export declare function errorToString(error: unknown): string;
export declare function subjectToString(subject: Subject): string;
export declare function errorFromHeaders(headers: Iterable<[string, string]> | undefined): Error | undefined;
export declare const contextHeadersToObject: (headers: Headers) => Record<string, unknown>;
export declare const objectToContextHeaders: (object: Record<string, unknown>) => Headers;