@skhemata/skhemata-form/src/validator/lib/isOctal.js

Skhemata Form Web Component. This web component can be used as base web component when working with forms and inputs.

import assertString from './util/assertString';

const octal = /^(0o)?[0-7]+$/i;

export default function isOctal(str) {
  assertString(str);
  return octal.test(str);
}