export interface TrackedProxyRequest {
    requestId: string;
    method: string;
    path: string;
    startTime: number;
}
export declare class ProxyRequestDrainTracker {
    private readonly inFlight;
    start(requestId: string, method: string, path: string): void;
    complete(requestId: string): void;
    completeOnResponseEnd(requestId: string, response: Response): Response;
    getInFlightCount(): number;
    getInFlightRequests(): TrackedProxyRequest[];
    waitForDrain(timeoutMs: number, pollIntervalMs?: number): Promise<boolean>;
}
export declare function parseProxyDrainTimeoutMs(rawValue: string | undefined, defaultValue: number): number;
export declare function createProxyDrainingResponse(): Response;
export declare function closeProxyServerWithin(close: () => Promise<void>, timeoutMs: number): Promise<boolean>;
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