import superagent from 'superagent';
import { HTTPMethod } from '../../shared/types/http';
import { NetworkAdapterFetchOptions } from '../modules/network-adapter';
export interface ResponseError extends Error {
    status: number;
    response: superagent.Response;
}
/**
 * Check if Error is thrown from superagent due to reponse with 4xx, 5xx status.
 * For 4xx, 5xx status, superagent throws Error object with status and response.
 */
export declare function isResponseError(value: unknown): value is ResponseError;
export declare function composeFetchOption(method: Extract<HTTPMethod, 'GET' | 'POST'>, headers: Record<string, unknown> | undefined, body: string | object | undefined): NetworkAdapterFetchOptions;
/**
 * Get media type part from Content-Type header value, and returns it in lowercase.
 *
 * Reference: https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Type#syntax
 */
export declare function getContentType(contentTypeHeader: string): string;
/**
 * Parse form string into key-value pair object.
 */
export declare function parseFormData(value: string): Record<string, string>;
export declare function isRedirectCode(code: number): boolean;