import { Digit } from "..";
import { IsUnion } from "../../../set";
type _IsDigitString<S extends string> = [
    S
] extends [''] ? true : [S] extends [`${Digit}${infer Rest}`] ? _IsDigitString<Rest> : false;
/**
 * checks whether a string is a digit string
 *
 * returns `false` on encountering union types
 *
 * @since 0.0.6
 */
export type IsDigitString<S extends string> = S extends '' ? false : IsUnion<S> extends true ? false : _IsDigitString<S>;
export {};
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