/** Cadence used when a workflow definition omits `heartbeatIntervalMinutes`. */
export declare const DEFAULT_WORKFLOW_HEARTBEAT_INTERVAL_MINUTES = 15;
export declare const WORKFLOW_HEARTBEAT_CUSTOM_TYPE = "workflows:workflow-heartbeat";
/** Stable identity for one scheduled boundary of a workflow run. */
export interface WorkflowHeartbeatIdentity {
    readonly runId: string;
    /** Unix timestamp in milliseconds for the cadence boundary. */
    readonly scheduledAt: number;
}
/** Deterministic context carried by a workflow heartbeat event. */
export interface WorkflowHeartbeatEventDetails extends WorkflowHeartbeatIdentity {
    readonly workflowName: string;
    /** Persisted workflow start timestamp in Unix milliseconds. */
    readonly startedAt: number;
    readonly intervalMinutes: number;
}
/** Slice-1 event envelope; scheduling and delivery are wired separately. */
export interface WorkflowHeartbeatEvent {
    readonly customType: typeof WORKFLOW_HEARTBEAT_CUSTOM_TYPE;
    readonly details: WorkflowHeartbeatEventDetails;
}