import { Headers } from 'node-fetch';
import { HttpError } from './errors';
import { Client } from '../clients/client';
import { AbortSignal } from 'node-fetch/externals';
export declare class HttpClient {
    private _client?;
    constructor(client?: Client);
    /**
     * Performs a fetch request.
     *
     * @param options
     */
    fetch<T>(options: EnvatoHttpRequest): Promise<EnvatoHttpResponse<T>>;
    /**
     * Returns the fetch init object to use for the request.
     *
     * @param opts
     */
    private _getRequestOptions;
    /**
     * Returns an object containing the request headers to use for the given request.
     *
     * @param options
     */
    private _getRequestHeaders;
    /**
     * Returns an `HttpError` instance for erroneous responses, or `undefined` for successful responses.
     *
     * @param status
     * @param message
     * @param body
     */
    private _getHttpError;
    /**
     * Parses the given response text as JSON and converts timestamps into dates. Returns `undefined` if there is a
     * parse error.
     *
     * @param data
     */
    private _parseResponseText;
}
export interface EnvatoHttpRequest {
    /**
     * The request URL.
     */
    url: string;
    /**
     * The request method.
     * @default GET
     */
    method?: RequestMethod;
    /**
     * The headers to send with the request.
     */
    headers: RequestHeaders;
    /**
     * Optional form data to send with the request. If provided, the `Content-Type` will automatically be set to
     * `x-www-form-urlencoded` and the form data will be encoded accordingly.
     */
    form?: RequestForm;
    /**
     * Optional fetch options. These will override client defaults if provided.
     */
    options?: RequestOptions;
}
export interface EnvatoHttpResponse<T> {
    /**
     * The options for this request.
     */
    request: EnvatoHttpRequest;
    /**
     * The status code for the request.
     */
    status: number;
    /**
     * For requests with an erroneous status code, this will contain an `HttpError` instance.
     */
    error?: HttpError;
    /**
     * The parsed body from the response.
     */
    body: T;
    /**
     * The response headers.
     */
    headers: Headers;
    /**
     * The number of milliseconds the request took to execute.
     */
    took: number;
}
export interface EnvatoHttpOptions {
    /**
     * The default timeout for requests in milliseconds, or `0` to disable.
     * @default 0
     */
    timeout?: number;
    /**
     * Whether or not to support gzip/deflate content encoding for requests.
     * @default true
     */
    compress?: boolean;
}
export type RequestMethod = 'GET' | 'POST' | 'PUT' | 'PATCH' | 'DELETE' | 'HEAD' | 'OPTIONS';
export type RequestForm = {
    [name: string]: any;
};
export type RequestHeaders = {
    [name: string]: string;
};
export type RequestOptions = EnvatoHttpOptions & {
    /**
     * An optional abort signal for cancelling a request before it completes. This is preferred over `timeout`.
     */
    signal?: AbortSignal | null;
};