import type { Recording } from '../types.js';
export type StartReplayUpstreamOpts = {
    /** Pre-captured exchanges; replayed in order. */
    recording: Recording;
    /**
     * Number of matched POSTs to replay before falling through to the
     * live upstream. Must be ≥ 0 and ≤ recording.exchanges.length.
     */
    upTo: number;
    /** URL forwarded to once the prefix is exhausted. */
    liveUpstream: string;
    /** Path predicate — only POSTs matching this get replay/forward treatment. */
    matchPath: (url: string) => boolean;
};
export type ReplayUpstream = {
    /** URL the proxy forwards to. */
    url: string;
    /** Number of matched POSTs served from the recording so far. */
    exchangeIndex(): number;
    close(): Promise<void>;
};
export declare function startReplayUpstream(opts: StartReplayUpstreamOpts): Promise<ReplayUpstream>;
//# sourceMappingURL=replay-upstream.d.ts.map