export type AuditAction = 'append' | 'erase' | 'query' | 'sync.pull' | 'sync.push';
export interface AuditEvent {
    ts: string;
    action: AuditAction;
    entry_id?: string;
    device_id: string;
    detail?: Record<string, unknown>;
}
export declare class AuditTrail {
    private filePath;
    constructor(filePath: string);
    log(event: AuditEvent): Promise<void>;
    readAll(): Promise<AuditEvent[]>;
    getFilePath(): string;
}