/**
 * @license
 * Copyright 2023 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
import { GenerateContentResponse, GenerateContentStreamResult } from "../../types";
/**
 * Process a response.body stream from the backend and return an
 * iterator that provides one complete GenerateContentResponse at a time
 * and a promise that resolves with a single aggregated
 * GenerateContentResponse.
 *
 * @param response - Response from a fetch call
 */
export declare function processStream(response: Response): GenerateContentStreamResult;
/**
 * Reads a raw stream from the fetch response and join incomplete
 * chunks, returning a new stream that provides a single complete
 * GenerateContentResponse in each iteration.
 */
export declare function getResponseStream<T>(inputStream: ReadableStream<string>): ReadableStream<T>;
/**
 * Aggregates an array of `GenerateContentResponse`s into a single
 * GenerateContentResponse.
 */
export declare function aggregateResponses(responses: GenerateContentResponse[]): GenerateContentResponse;
