import { FsRequestHeaders } from './../types';
/**
 * Parse response raw header (xhr)
 *
 * @param {string} headers - raw headers string
 */
export declare const parse: (headers: any) => {};
/**
 * Normalize input headers
 *
 * @param headers
 */
export declare const normalizeHeaders: (headers: FsRequestHeaders) => FsRequestHeaders;
/**
 * Set request headers
 *
 * @param headers - object containing headers
 * @param name - header name
 * @param value - header value
 * @param setIFExists - determine if we should change header value if exists
 */
export declare const set: (headers: FsRequestHeaders, name: string, value: string, setIFExists?: boolean) => FsRequestHeaders;
/**
 * Normalize header names according to rfc spec
 *
 * @param {string} name - header name
 */
export declare const normalizeName: (name: string) => string;