import { isly } from "isly";
import type { Year } from "./index";
export type Numeric = number;
export declare namespace Numeric {
    const type: isly.Number<number>, is: (value: number | any) => value is number, flawed: (value: number | any) => isly.Flaw | false;
    function parse(value: Year): Numeric;
    function parse(value: string): Numeric | undefined;
    function isLeapYear(year: Numeric): boolean;
}