@skhemata/skhemata-form/src/validator/lib/isNumeric.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';
import { decimal } from './alpha';

const numericNoSymbols = /^[0-9]+$/;

export default function isNumeric(str, options) {
  assertString(str);
  if (options && options.no_symbols) {
    return numericNoSymbols.test(str);
  }
  return (new RegExp(`^[+-]?([0-9]*[${(options || {}).locale ? decimal[options.locale] : '.'}])?[0-9]+$`)).test(str);
}