New update nodejs above v10

crypto.js

import crypto = require('crypto');

export class CryptoAES {
  
  private algorithm = 'aes-256-cbc';
  private key: string;
  private IV_LENGTH: number = 16;
  private iv: Buffer;   // random bytes 
  /**
   * @example crytpo = new CryptoAES(<string 16,32 bits>) {Class object}
   * @param key 
   */
  constructor(key) {
    if(!key) throw new Error('Key can not be empty');
    this.key = key;
    this.iv = crypto.randomBytes(this.IV_LENGTH);
  }

  /**
   * encrypt
   *
   * @param  {String} message         
   * @example self.encrypt('some secret'); {String}
   * @return {String} encrypted  
   */
  encrypt(message: string) {
    let cipher = crypto.createCipheriv(this.algorithm, Buffer.from(this.key, 'base64'), this.iv);
    let encrypted = cipher.update(message);
    encrypted = Buffer.concat([encrypted, cipher.final()]);
    // return format base64
    return this.iv.toString('base64') + ':' + encrypted.toString('base64');
  }

  /**
   * decrypt
   *
   * @param  {String} encrypted
   * @example self.encrypted(5IDMv3w1g68HqbFrCXzKyQ==:/oq12uZIyEB21ClDM3CJjAfcTEz7f8+H+UT+); {String}
   * @return {String} decrypted
   */
  decrypt(encrypted:string) {
    // split to array
    let textParts = encrypted.split(':');
    // get iv in encrypted 
    let iv = Buffer.from(textParts.shift(), 'base64');
    let encryptedText = Buffer.from(textParts.join(':'), 'base64');
    let decipher = crypto.createDecipheriv(this.algorithm, Buffer.from(this.key, 'base64'), iv);
    let decrypted = decipher.update(encryptedText);
    decrypted = Buffer.concat([decrypted, decipher.final()]);
    // to encode base64
    return decrypted.toString();
  }
};