import type OpenAI from "openai";
import type { Pipeline, HttpClient } from "@azure/core-rest-pipeline";
type FetchFn = NonNullable<NonNullable<ConstructorParameters<typeof OpenAI>[0]>["fetch"]>;
/**
 * A custom `fetch` implementation that forwards requests to an Azure Core Pipeline.
 * This allows us to send traffic to the test proxy for recording and playback.
 * @param pipeline - The pipeline to use
 * @param customHttpClient - The http client to make requests with
 * @returns A fetch-compatible function.
 */
export declare function getCustomFetch(pipeline: Pipeline, customHttpClient?: HttpClient): FetchFn;
export {};
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