/**
 * @license
 * Copyright 2018 Palantir Technologies, Inc.
 *
 * 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 { IHttpApiBridge, IHttpEndpointOptions } from "../httpApiBridge";
import { IUserAgent } from "../userAgent";
export interface IFetchBody {
    json(): Promise<any>;
    text(): Promise<string>;
    blob(): Promise<Blob>;
}
export interface IFetchResponse extends IFetchBody {
    readonly body: ReadableStream<Uint8Array> | null;
    readonly headers: Headers;
    readonly ok: boolean;
    readonly status: number;
}
export type FetchFunction = (url: string | Request, init?: RequestInit) => Promise<IFetchResponse>;
export type Supplier<T> = () => T;
export interface IFetchBridgeParams {
    baseUrl: string | Supplier<string>;
    /**
     * All network requests will add this userAgent as a header param called 'Fetch-User-Agent'.
     * This will be logged in receiving service's request logs as params.User-Agent
     */
    userAgent: IUserAgent | ReadonlyArray<IUserAgent | Supplier<IUserAgent | IUserAgent[]>>;
    token?: string | Supplier<string> | Supplier<Promise<string>>;
    fetch?: FetchFunction;
}
export declare class FetchBridge implements IHttpApiBridge {
    private static ACCEPT_HEADER;
    private readonly getBaseUrl;
    private readonly getToken;
    private readonly fetch;
    private readonly userAgentSuppliers;
    constructor(params: IFetchBridgeParams);
    call<T>(serviceName: string, endpointName: string, method: string, endpointPath: string, data?: any, headers?: {
        [p: string]: string | number | boolean | undefined | null;
    }, queryArguments?: {
        [p: string]: any;
    }, pathArguments?: any[], requestMediaType?: string, responseMediaType?: string): Promise<T>;
    callEndpoint<T>(params: IHttpEndpointOptions): Promise<T>;
    private makeFetchCall;
    private getUserAgent;
    private getQoSMetadataFromHeaders;
    private handleBinaryResponseBody;
    private appendQueryParameter;
    private buildPath;
    private buildQueryString;
    private handleBody;
    private normalizeWithNoLeadingSlash;
    private getMediaType;
    private isBinaryMedia;
}