Private fields and private methods support

[lobau]

If you write this valid ES6 code in JSFiddle, you get tons of errors

class Mosaic {
  #count;
  #view;
  constructor(div) {
    this.#view = document.getElementById(div)
  }
  set videoCount(count) {
    this.#count = count;
    this.#update();
  }
  get videoCount() {
    return this.#count;
  }
  #update() {
  	const result = `<h1>${this.#count}</h1>`;
  	this.#view.innerHTML = result;
  	console.log(this.videoCount);
  }
}

const mosaic = new Mosaic('container')
mosaic.videoCount = 2;

That's because JSFiddle does't understand the # used for private fields and private methods.
tc39/proposal-private-fields#14

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[d-002]

The error stills occurs. Please reopen this issue

[zaxinothdigital]

I have this same problem. Please reopen this issue