import { IConnection } from "./IConnection";
import { IFetchRoute } from "./IFetchRoute";
import { IPropagation } from "./IPropagation";
/**
 * Utility class for `fetch` functions used in `@nestia/sdk`.
 *
 * `PlainFetcher` is a utility class designed for SDK functions generated by
 * [`@nestia/sdk`](https://nestia.io/docs/sdk/sdk), interacting with the remote
 * HTTP sever API. In other words, this is a collection of dedicated `fetch()`
 * functions for `@nestia/sdk`.
 *
 * For reference, `PlainFetcher` class does not encrypt or decrypt the body data
 * at all. It just delivers plain data without any post processing. If you've
 * defined a controller method through `@EncryptedRoute` or `@EncryptedBody`
 * decorator, then {@liink EncryptedFetcher} class would be used instead.
 *
 * @author Jeongho Nam - https://github.com/samchon
 */
export declare namespace PlainFetcher {
    /**
     * Fetch function only for `HEAD` method.
     *
     * @param connection Connection information for the remote HTTP server
     * @param route Route information about the target API
     * @returns Nothing because of `HEAD` method
     */
    function fetch(connection: IConnection, route: IFetchRoute<"HEAD">): Promise<void>;
    /**
     * Fetch function only for `GET` method.
     *
     * @param connection Connection information for the remote HTTP server
     * @param route Route information about the target API
     * @returns Response body data from the remote API
     */
    function fetch<Output>(connection: IConnection, route: IFetchRoute<"GET">): Promise<Output>;
    /**
     * Fetch function for the `POST`, `PUT`, `PATCH` and `DELETE` methods.
     *
     * @param connection Connection information for the remote HTTP server
     * @param route Route information about the target API
     * @returns Response body data from the remote API
     */
    function fetch<Input, Output>(connection: IConnection, route: IFetchRoute<"POST" | "PUT" | "PATCH" | "DELETE">, input?: Input, stringify?: (input: Input) => string): Promise<Output>;
    function propagate<Output extends IPropagation<any, any>>(connection: IConnection, route: IFetchRoute<"GET" | "HEAD">): Promise<Output>;
    function propagate<Input, Output extends IPropagation<any, any>>(connection: IConnection, route: IFetchRoute<"DELETE" | "GET" | "HEAD" | "PATCH" | "POST" | "PUT">, input?: Input, stringify?: (input: Input) => string): Promise<Output>;
}