import type { DeviceLogsBackend, LogContext } from './struct.js';
export declare const LOGS_SECONDARY_BACKEND_ENABLED: boolean;
export declare const shouldReadFromSecondary: () => boolean;
export declare const shouldPublishToSecondary: () => boolean;
export declare function addRetentionLimit(ctx: Omit<LogContext, 'retention_limit'>): LogContext;
export declare const getPrimaryBackend: () => Promise<DeviceLogsBackend>;
export declare const getSecondaryBackend: () => Promise<DeviceLogsBackend>;
export declare const omitNanoTimestamp: (key: string, value: any) => any;