How to use Observable code and "this" in Quarto ojs cell?

[Juuso1]

Description

I try to copy this code (https://observablehq.com/@fil/whats-this) to Quarto document, but I can´t see nothing. Only Replay button an this one "Object {value: NaN}" ? What should I do?

viewof replay = html`<button>replay`

{
  replay;
  mutable that = this;
  if (this) yield { value: this.value + 1 };
  else yield { value: 0 };
}

mutable that = undefined

Br, Juuso

[cscheid]

I think this is a bug. Tracking on #10035.