Understanding “public” / “private” in typescript class

Question

In the below type script code , irrespective of whether name is \"public\" or \"private\" , java script code that is generated is same.

So my question is, how to decide

Answer 1

In ESnext, private class fields are defined using a hash # prefix:

class MyClass {
  a = 1;          // .a is public
  #b = 2;         // .#b is private
  static #c = 3;  // .#c is private and static
  incB() {
    this.#b++;
  }
}

const m = new MyClass();
m.incB(); // runs OK
m.#b = 0; // error - private property cannot be modified outside class

*Note: there’s no way to define private methods, getters and setters.

but a proposal is there https://github.com/tc39/proposal-private-methods