Why are classes in ES6 so miserable?

Question

JavaScript

Hello.
Interested in the new ES6 standard. Looked at implementation of classes and was disappointed. What I didn’t like the most was that in the new standard you can’t declare fields in the body of a class declaration. Even in ES5, we could mimic private fields in a constructor function using a closure.

var Person = (function()
{
  var name;

  function Person(_name)
  {
    name = _name;
  }

  Person.prototype.getName = function()
  {
      return name;
  };

  return Person;
}());

var p = new Person("Kirill");
console.log(p.getName()); // Kirill

I looked at the old coder tricks using Symbol and WeakMap to simulate privacy in ES6 and was still dissatisfied.

(function()
{
  const name = Symbol();
  
  class Person
  {
    constructor(_name)
    {
      this[name] = _name;
    }
    getName()
    {
      return this[name];
    }
  }
  
  var p = new Person("Kirill");
  console.log(p.getName()); // Kirill
}());

Why are ES6 classes so unfinished? Would have done at least like in TypeScript. Although there is private and not private, at least there are normal fields.

Answer 1

Yes, because it's just syntactic sugar and nothing more.
Just as there were no classes in JavaScript, there are none...