import type { FetchLike, OnEvent, CapturedSent } from './types.js';
export interface DeferredOptions {
    signedFetch: FetchLike;
    locationUrl: string;
    interactionUrl?: string;
    interactionCode?: string;
    onInteraction?: (url: string, code: string) => void;
    onClarification?: (question: string) => Promise<string>;
    onEvent?: OnEvent;
    maxPollDuration?: number;
    /** Shared sent-request tracker; see TokenExchangeOptions. */
    sentTracker?: {
        latest?: CapturedSent;
    };
}
export interface AAuthError {
    error: string;
    error_description?: string;
    error_uri?: string;
}
export interface DeferredResult {
    response: Response;
    error?: AAuthError;
}
/**
 * Poll a 202 Location URL until a terminal response is received.
 *
 * Terminal: 200, 400, 401, 403, 408, 410, 500
 * Transient: 202 (continue polling), 503 (backoff then retry)
 *
 * On 202 with clarification body: calls onClarification, POSTs response back.
 * On 202 with AAuth-Requirement: requirement=interaction header: calls onInteraction.
 */
export declare function pollDeferred(options: DeferredOptions): Promise<DeferredResult>;
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