- "use strict";
-
- var isNatural = require("../number/is-natural")
- , toShortString = require("../to-short-string-representation");
-
- module.exports = function (arg) {
- var num = Number(arg);
- if (!isNatural(num)) throw new TypeError(toShortString(arg) + " is not a natural number");
- return num;
- };
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