I know that this could clearly work for implementing private arrays, etc.
as well, but what about private integer or booleans?

```js
let _x = 0;
let _y = false;

class Foo {
  constructor(x, y) {
    this::_x = x;
    this::_y = y;
  }

  // ...
}
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I know that this could clearly work for implementing private arrays, etc.
as well, but what about private integer or booleans?

```js
let _x = 0;
let _y = false;

class Foo {
  constructor(x, y) {
    this::_x = x;
    this::_y = y;
  }

  // ...
}
```