/**
 * @license
 * Copyright 2020 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 { Connection } from '../implementation/connection';
export declare function injectTestConnection(factory: (() => Connection<string>) | null): void;
export declare function newTextConnection(): Connection<string>;
export declare function newBytesConnection(): Connection<ArrayBuffer>;
export declare function newBlobConnection(): Connection<Blob>;
export declare function newStreamConnection(): Connection<ReadableStream<Uint8Array>>;