import { HeadersModifier, HttpHeaders } from './_types';
export declare const header: (name: string, value: number | string) => HeadersModifier;
export declare const headers: (headers: HttpHeaders) => HeadersModifier;
export declare const webhookHeader: (name: string, value: number | string) => HeadersModifier;
export declare const webhookHeaders: (headers: HttpHeaders) => HeadersModifier;