simplepass-js/index.js

Library generates passwords

const data = require('./data').config;

class Password {
  /**
 * Generate a password
 * @param {Number} length - password length
 * @param {Boolean} isNumbers - allow to contain numbers
 * @param {Number} specialsLevel - allow to contain a special characters
 * see more in data.js config
 * @return {String} password
 */
  static generate (length = 8, isNumbers = 1, specialsLevel = 0) {
    let password = [];
    const randomPosition = this.random(2, 6);
    for (let i = 0; i < length; i++) {
      if (isNumbers && i != 0 && i % randomPosition == 0) {
        password.push(data.numbers[this.random(0, data.numbers.length)]);
        continue;
      }

      if (specialsLevel && i != 0 && i % (randomPosition + 1) == 0) {
        password.push(data["specials_" + [specialsLevel]][this.random(0, data["specials_" + [specialsLevel]].length)]);
        continue;
      }
      password.push(data.alphabet_en[this.random(0, data.alphabet_en.length)]);
    }
    return password.join('');
  }

  /**
   * Return a random integer
   * @param {Number} min
   * @param {Number} max
   * @return {Number} random number
   */
  static random (min, max) {
    return Math.floor(Math.random() * (max - min)) + min;
  }
}

module.exports = Password;