/**
 * Return value if defined or 0 if not defined
 * @param v Value
 * @returns value
 */
declare const valueOrZero: (v: number | null | undefined) => number;
/**
 * Parse the string to number or return null if string cannot be parsed
 * @param v Value
 * @returns value
 */
declare const valueOrNull: (v: string) => number | null;
export { valueOrZero, valueOrNull };