Usage

isIntString("0"); // => true
isIntString("0.1"); // => false
isIntString("+1"); // => false

Installation

CLI

npx atmx add helper is-int-string

Manually

Copy and paste the following method into @/utils/helpers/undefined.ts:

import { isString } from "@/helpers/is-string.ts";

/**
* Return true if the given value is a string that can be parsed as an
* integer.
*
* @example
* isIntString('0') // => true
* isIntString('0.1') // => false
* isIntString('+1') // => false
*/
export function isIntString(value: any): value is string {
if (!isString(value)) {
return false;
}
const num = +value;
return Number.isInteger(num) && `${num}` === value;
}