/** @noSelfInFile */

import { Client } from './Client';
import { ClientOptions } from './ClientOptions';
import { ClientStat } from './ClientStat';
import { HttpMethod } from './HttpMethod';
import { IoObject } from './IoObject';
import { RequestOptions } from './RequestOptions';
import { ResponseObject } from './ResponseObject';

/**
 * Create an HTTP client instance.
 * @param options Configuration options of the client.
 * @return A new HTTP client instance
 * @customName new
 */
export declare function new_(options?: ClientOptions): Client

/**
   * Make an HTTP request and receive a response.
   * @param method A request HTTP method. Possible values: `GET`, `POST`, `PUT`, `PATCH`, `OPTIONS`, `HEAD`, `DELETE`, `TRACE`, `CONNECT`.
   * @param url A request URL, for example, `https://httpbin.org/get`.
   * @param body A request body.
   * @param opts Request options.
   * @returns This method returns one of the following objects:
   * - `response_object`;
   * - `io_object` if `request_options.chunked` is set to `true`.
   */
export declare function request(method: HttpMethod, url: string, body?: unknown, opts?: RequestOptions & { chunked: true }): IoObject;

/**
 * Make an HTTP request and receive a response.
 * @param method A request HTTP method. Possible values: `GET`, `POST`, `PUT`, `PATCH`, `OPTIONS`, `HEAD`, `DELETE`, `TRACE`, `CONNECT`.
 * @param url A request URL, for example, `https://httpbin.org/get`.
 * @param body A request body.
 * @param opts Request options.
 * @returns This method returns one of the following objects:
 * - `response_object`;
 * - `io_object` if `request_options.chunked` is set to `true`.
 */
export declare function request(method: HttpMethod, url: string, body?: unknown, opts?: RequestOptions): ResponseObject;

/**
 * Make a `GET` request and receive a response.
 * @param url A request URL, for example, `https://httpbin.org/get`.
 * @param opts Request options.
 * @returns This method might return one of the following objects:
 * - `response_object`;
 * - `io_object` if `request_options.chunked` is set to `true`.
 */
export declare function get(url: string, opts: RequestOptions & { chunked: true }): IoObject;

/**
 * Make a `GET` request and receive a response.
 * @param url A request URL, for example, `https://httpbin.org/get`.
 * @param opts Request options.
 * @returns This method might return one of the following objects:
 * - `response_object`;
 * - `io_object` if `request_options.chunked` is set to `true`.
 */
export declare function get(url: string, opts?: RequestOptions): ResponseObject;

/**
 * Make a `POST` request and receive a response.
 * @param url A request URL, for example, `https://httpbin.org/post`.
 * @param body A request body.
 * @param opts Request options.
 * @returns This method might return one of the following objects:
 * - `response_object`;
 * - `io_object` if `request_options.chunked` is set to `true`.
 */
export declare function post(url: string, body?: unknown, opts?: RequestOptions & { chunked: true }): IoObject;

/**
 * Make a `POST` request and receive a response.
 * @param url A request URL, for example, `https://httpbin.org/post`.
 * @param body A request body.
 * @param opts Request options.
 * @returns This method might return one of the following objects:
 * - `response_object`;
 * - `io_object` if `request_options.chunked` is set to `true`.
 */
export declare function post(url: string, body?: unknown, opts?: RequestOptions): ResponseObject;

/**
 * Make a `PUT` request and receive a response.
 * @param url A request URL, for example, `https://httpbin.org/put`.
 * @param body A request body.
 * @param opts Request options.
 * @returns This method might return one of the following objects:
 * - `response_object`;
 * - `io_object` if `request_options.chunked` is set to `true`.
 */
export declare function put(url: string, body?: unknown, opts?: RequestOptions & { chunked: true }): IoObject;

/**
 * Make a `PUT` request and receive a response.
 * @param url A request URL, for example, `https://httpbin.org/put`.
 * @param body A request body.
 * @param opts Request options.
 * @returns This method might return one of the following objects:
 * - `response_object`;
 * - `io_object` if `request_options.chunked` is set to `true`.
 */
export declare function put(url: string, body?: unknown, opts?: RequestOptions): ResponseObject;

/**
 * Make a `PATCH` request and receive a response.
 * @param url A request URL, for example, `https://httpbin.org/patch`.
 * @param body A request body.
 * @param opts Request options.
 * @returns This method might return one of the following objects:
 * - `response_object`;
 * - `io_object` if `request_options.chunked` is set to `true`.
 */
export declare function patch(url: string, body?: unknown, opts?: RequestOptions & { chunked: true }): IoObject;

/**
 * Make a `PATCH` request and receive a response.
 * @param url A request URL, for example, `https://httpbin.org/patch`.
 * @param body A request body.
 * @param opts Request options.
 * @returns This method might return one of the following objects:
 * - `response_object`;
 * - `io_object` if `request_options.chunked` is set to `true`.
 */
export declare function patch(url: string, body?: unknown, opts?: RequestOptions): ResponseObject;

/**
 * Make a `DELETE` request and receive a response.
 * @param url A request URL, for example, `https://httpbin.org/delete`.
 * @param opts Request options.
 * @returns This method might return one of the following objects:
 * - `response_object`;
 * - `io_object` if `request_options.chunked` is set to `true`.
 * @customName delete
 */
export declare function delete_(url: string, opts: RequestOptions & { chunked: true }): IoObject;

/**
 * Make a `DELETE` request and receive a response.
 * @param url A request URL, for example, `https://httpbin.org/delete`.
 * @param opts Request options.
 * @returns This method might return one of the following objects:
 * - `response_object`;
 * - `io_object` if `request_options.chunked` is set to `true`.
 * @customName delete
 */
export declare function delete_(url: string, opts?: RequestOptions): ResponseObject;

/**
 * Make a `HEAD` request and receive a response.
 * @param url A request URL, for example, `https://httpbin.org/head`.
 * @param opts Request options.
 * @returns This method might return one of the following objects:
 * - `response_object`;
 * - `io_object` if `request_options.chunked` is set to `true`.
 */
export declare function head(url: string, opts: RequestOptions & { chunked: true }): IoObject;

/**
 * Make a `HEAD` request and receive a response.
 * @param url A request URL, for example, `https://httpbin.org/head`.
 * @param opts Request options.
 * @returns This method might return one of the following objects:
 * - `response_object`;
 * - `io_object` if `request_options.chunked` is set to `true`.
 */
export declare function head(url: string, opts?: RequestOptions): ResponseObject;

/**
 * Make a `OPTIONS` request and receive a response.
 * @param url A request URL, for example, `https://httpbin.org/options`.
 * @param opts Request options.
 * @returns This method might return one of the following objects:
 * - `response_object`;
 * - `io_object` if `request_options.chunked` is set to `true`.
 */
export declare function options(url: string, opts: RequestOptions & { chunked: true }): IoObject;

/**
 * Make a `OPTIONS` request and receive a response.
 * @param url A request URL, for example, `https://httpbin.org/options`.
 * @param opts Request options.
 * @returns This method might return one of the following objects:
 * - `response_object`;
 * - `io_object` if `request_options.chunked` is set to `true`.
 */
export declare function options(url: string, opts?: RequestOptions): ResponseObject;

/**
 * Make a `TRACE` request and receive a response.
 * @param url A request URL, for example, `https://httpbin.org/trace`.
 * @param opts Request options.
 * @returns This method might return one of the following objects:
 * - `response_object`;
 * - `io_object` if `request_options.chunked` is set to `true`.
 */
export declare function trace(url: string, opts: RequestOptions & { chunked: true }): IoObject;

/**
 * Make a `TRACE` request and receive a response.
 * @param url A request URL, for example, `https://httpbin.org/trace`.
 * @param opts Request options.
 * @returns This method might return one of the following objects:
 * - `response_object`;
 * - `io_object` if `request_options.chunked` is set to `true`.
 */
export declare function trace(url: string, opts?: RequestOptions): ResponseObject;

/**
 * Make a `CONNECT` request and receive a response.
 * @param url A request URL, for example, `https://httpbin.org/connect`.
 * @param opts Request options.
 * @returns This method might return one of the following objects:
 * - `response_object`;
 * - `io_object` if `request_options.chunked` is set to `true`.
 */
export declare function connect(url: string, opts: RequestOptions & { chunked: true }): IoObject;

/**
 * Make a `CONNECT` request and receive a response.
 * @param url A request URL, for example, `https://httpbin.org/connect`.
 * @param opts Request options.
 * @returns This method might return one of the following objects:
 * - `response_object`;
 * - `io_object` if `request_options.chunked` is set to `true`.
 */
export declare function connect(url: string, opts?: RequestOptions): ResponseObject;

/**
 * Get a table with statistics for the HTTP client.
 */
export declare function stat(): ClientStat;

/**
 * Since: `2.11.0`.
 *
 * Decoders used to deserialize response data based on the `Content-Type` header value.
 */
export declare let decoders: { [key: string]: (this: void) => (body: string, _content_type: unknown) => unknown };