export type SpanStatus = 'pending' | 'running' | 'completed' | 'failed';
export type SpanKind = 'activity' | 'child_workflow';
export interface Span {
    id: string;
    name: string;
    technicalName: string;
    description: string | null;
    status: SpanStatus;
    kind: SpanKind;
    attempt: number;
    startedAt: string | null;
    scheduledAt: string | null;
    completedAt: string | null;
    startOffsetMs: number;
    endOffsetMs: number;
    durationMs: number;
    failureMessage: string | null;
    input?: unknown;
    output?: unknown;
}
export type HistoryEvent = Record<string, unknown>;
export declare function eventTypeName(event: HistoryEvent): string;
export declare function eventAttributes(event?: HistoryEvent): Record<string, unknown> | undefined;
/**
 * @param events - flat Temporal history events, in chronological order
 * @param workflowStartTimeMs - epoch ms used as the timeline origin (0 offset)
 */
export declare function correlate(events: HistoryEvent[], workflowStartTimeMs: number | null): Span[];