import { AbstractType } from "./AbstractType";
import { Req, scalar } from "@huz-com/types";
import { DigitTypeOption } from "./index.interfaces";
declare type T = scalar.Digit;
declare type O = DigitTypeOption;
export declare class DigitType extends AbstractType<T, O> {
    protected static readonly _PATTERN: RegExp;
    protected static _ins: DigitType;
    /**
     * Returns skeleton instance
     * */
    static ins(): DigitType;
    constructor();
    /**
     * Checks is digit?
     */
    is(value: scalar.Unknown, opt?: O, req?: Req): boolean;
    /**
     * Converts a value to digit
     */
    cast(value: scalar.Unknown, opt?: O, req?: Req): T | null;
}
export {};