export type ContinuationUtteranceBlockReason = "in-flight" | "retry-cap-reached" | "same-blocker";
type ContinuationUtteranceRequest = {
    readonly allowSameBlockerRetry?: boolean;
    readonly blockerId: string;
    readonly maxAttempts: number;
    readonly sessionId: string;
};
type ContinuationUtteranceAllowed = {
    readonly kind: "allowed";
    readonly complete: () => void;
};
type ContinuationUtteranceBlocked = {
    readonly kind: "blocked";
    readonly reason: ContinuationUtteranceBlockReason;
};
export type ContinuationUtteranceDecision = ContinuationUtteranceAllowed | ContinuationUtteranceBlocked;
export declare class ContinuationUtteranceGate {
    private readonly inFlightSessions;
    private readonly lastBlockerIds;
    private readonly sentCounts;
    reset(sessionId: string): void;
    tryBegin(request: ContinuationUtteranceRequest): ContinuationUtteranceDecision;
}
export {};