import type { SearchParams } from '../search-params';
import type { Result } from '@internetarchive/result-type';
import type { SearchServiceError } from '../search-service-error';
import { BaseSearchBackend } from './base-search-backend';
import type { SearchBackendOptionsInterface } from './search-backend-options';
/**
 * The FulltextSearchBackend performs a `window.fetch` request to archive.org
 */
export declare class FulltextSearchBackend extends BaseSearchBackend {
    private servicePath;
    constructor(options?: SearchBackendOptionsInterface);
    /** @inheritdoc */
    performSearch(params: SearchParams): Promise<Result<any, SearchServiceError>>;
}