import { FailureType } from './types.js';
export interface HeartbeatCheckDefinition {
    id: FailureType;
    description: string;
}
export interface HeartbeatState {
    lastRunAt: number;
    lastWindowKey: string;
    lastExecutedCheckIds: string[];
    updatedAt: number;
}
export interface ConversationHeartbeatResult {
    executed: boolean;
    reason: 'executed' | 'window_not_elapsed' | 'window_dedup' | 'no_checks';
    executedCheckIds: string[];
}
export interface ConversationHeartbeatOptions {
    heartbeatFilePath?: string;
    stateFilePath?: string;
    windowMs?: number;
    now?: () => number;
    executeCheck?: (check: HeartbeatCheckDefinition) => Promise<void> | void;
    logger?: Pick<Console, 'warn' | 'error' | 'info'>;
}
export declare function parseHeartbeatChecklist(markdown: string): HeartbeatCheckDefinition[];
export declare class ConversationHeartbeatEngine {
    private readonly heartbeatFilePath;
    private readonly stateFilePath;
    private readonly windowMs;
    private readonly now;
    private readonly executeCheck;
    private readonly logger;
    constructor(options?: ConversationHeartbeatOptions);
    onInboundMessage(): Promise<ConversationHeartbeatResult>;
    private loadChecklist;
}
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