node-input-validator/src/rules/lengthBetween.js

validation library for nodejs, inspired by laravel.

const integer = require('./integer');

module.exports = async function lengthBetween(attribute, value, args) {
  if (!Array.isArray(args) && args.length !== 2) {
    throw `The number of arguments for length between in the field ${attribute} are invalid.`;
  }

  let [min, max] = args;

  const [isIntMin, isIntMax] = await Promise.all([
    integer(attribute, min.toString()),
    integer(attribute, max.toString()),
  ]);

  if (!isIntMin || !isIntMax) {
    throw 'Seeds must be integer for lengthBetween rule.';
  }

  min = parseInt(min);
  max = parseInt(max);

  if (min >= max) {
    throw 'Seed min must be less then max in lengthBetween.';
  }

  // if (Array.isArray(attribute)) {

  //     if (attribute.length < min || attribute.length > max) {
  //         return false;
  //     }

  //     return true;
  // }

  if (typeof value === 'string' || Array.isArray(value)) {
    if (value.length < min || value.length > max) {
      return false;
    }

    return true;
  }

  /* istanbul ignore next */
  return false;
};