node-lombok does not work with complex object with different types

[trcoelho]

Describe the bug
Following example:

import { Getters, Setters} from 'node-lombok';

@Getters()
@Setters()
class User {
  [x: string]: any;
  private name: string;
  private birthday: Date;

  constructor(name: string, birthday: Date) {
    this.name = name;
    this.birthday = birthday;
  }
}
const user = new User('', new Date());
user.setName('user');
user.setBirthday(new Date());
console.log(user.getName());
console.log(user.getBirthday());

To Reproduce
1- Create an complex type with different attributes types (string, Date, bitint etc...)
2 - Annotate class with @Getters() and @Setters()

Expected behavior
Respect data type as per class attributes definition.