import { type InteractionStateSignal } from '../../user-context/interaction-state.js';
export interface InteractionState extends InteractionStateSignal {
    sessionKey: string;
    expiresAt: number;
    updatedAt: number;
}
export declare function getInteractionState(sessionKey: string, now?: number): InteractionState | undefined;
export declare function setInteractionState(input: {
    sessionKey: string;
    signal: InteractionStateSignal;
    now?: number;
}): InteractionState;
export declare function updateInteractionStateFromMessage(input: {
    sessionKey: string;
    message: string;
    now?: number;
}): InteractionState;