import { Observable } from 'rxjs';
import { HttpAdapterInterface, HttpRequestInterface, HttpRequestOptionsInterface, HttpResponseInterface } from '../../contract';
export declare class FetchBrowserAdapter implements HttpAdapterInterface {
    private readonly _fetchFn;
    constructor(fetchFn?: typeof fetch);
    /**
     * {@inheritdoc}
     */
    execute<T>(request: HttpRequestInterface, options?: HttpRequestOptionsInterface): Observable<HttpResponseInterface<T>>;
}