I have a simple class User and I am using ES5:

/**
 * @property {number} id
 * @property {string} username
 * @property {string} password
 * @property {string} email
 */
class User {
  
  constructor(obj) {
    ...
  }
}

However I cannot get VSCode's intellisense to hint any of the instance properties if I type say:

let a = new User();
a.|      <-- Here intellisense should hint me id, username, etc...

Intellisense will only hint properties if I explicitly declare them in the constructor like so:

constructor(obj) {
    this.id = 1;
    this.username = '';
}

How can I write the JSDoc in the correct form?