export declare function secondsToNumber(seconds: number, nanos: number): number;
/**
 * Encodes seconds and fraction into an array of numbers that matches
 * Jackson's optional second/fraction timestamp fields.
 */
export declare function encodeNumericArray(seconds: number, fraction: number): number[];
/**
 * Appends Jackson-style optional second/fraction fields to a required
 * date/time prefix (such as year-month-day-hour-minute).
 */
export declare function appendNumericTimeFields(prefix: number[], seconds: number, fraction: number): number[];