import { type PipelineBus } from "./pipeline-bus.js";
import type { Reasoner, ReasonerTurn, ReasoningPart } from "./reasoner.js";
import { type Scheduler } from "./scheduler.js";
export interface HedgedReasonerOptions {
    readonly primary: Reasoner;
    readonly backup: Reasoner;
    readonly hedgeAfterMs: number;
    readonly bus?: PipelineBus;
    readonly contextId?: string;
    readonly scheduler?: Scheduler;
}
export declare class HedgedReasoner implements Reasoner {
    private readonly opts;
    private readonly scheduler;
    constructor(opts: HedgedReasonerOptions);
    stream(turn: ReasonerTurn): AsyncIterable<ReasoningPart>;
    private doStream;
    private raceToCommit;
    private metric;
}
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