import { type StrNum } from "https://deno.land/x/rimbu@0.13.1/typical/mod.ts";
const { IsPosNum } = StrNum;
Returns true if the given string is a valid positive integer, false otherwise.
definition: N extends Str.Append<PosDigit, infer Rest> ? Str.DropWhile<Rest, Digit> extends "" ? true : false : false