import { RequestContext, ResponseContext } from './http/http.js';
import { Observable } from './rxjsStub.js';
/**
 * Defines the contract for a middleware intercepting requests before
 * they are sent (but after the RequestContext was created)
 * and before the ResponseContext is unwrapped.
 *
 */
export interface Middleware {
    /**
     * Modifies the request before the request is sent.
     *
     * @param context RequestContext of a request which is about to be sent to the server
     * @returns an observable of the updated request context
     *
     */
    pre(context: RequestContext): Observable<RequestContext>;
    /**
     * Modifies the returned response before it is deserialized.
     *
     * @param context ResponseContext of a sent request
     * @returns an observable of the modified response context
     */
    post(context: ResponseContext): Observable<ResponseContext>;
}
export declare class PromiseMiddlewareWrapper implements Middleware {
    private middleware;
    constructor(middleware: PromiseMiddleware);
    pre(context: RequestContext): Observable<RequestContext>;
    post(context: ResponseContext): Observable<ResponseContext>;
}
/**
 * Defines the contract for a middleware intercepting requests before
 * they are sent (but after the RequestContext was created)
 * and before the ResponseContext is unwrapped.
 *
 */
export interface PromiseMiddleware {
    /**
     * Modifies the request before the request is sent.
     *
     * @param context RequestContext of a request which is about to be sent to the server
     * @returns an observable of the updated request context
     *
     */
    pre(context: RequestContext): Promise<RequestContext>;
    /**
 * Modifies the returned response before it is deserialized.
 *
 * @param context ResponseContext of a sent request
 * @returns an observable of the modified response context
 */
    post(context: ResponseContext): Promise<ResponseContext>;
}