[Feature]: Expose Frame for JSHandle (and ElementHandle)

[stevenwdv]

JSHandle#executionContext() was removed in v17, but with it also the ability to get the Frame or Page from a handle was removed. Previously one could use handle.executionContext().frame(), but now there is no way to get the Frame anymore. I would propose adding a JSHandle#frame() method to get the Frame from an element.

Note: ElementHandle#contentFrame() is for <iframe>s, this does not return the Frame that an element is on or a JSHandle is part of.

[OrKoN]

@stevenwdv do you mean this #8875? Note that the getter is on the ElementHandle at runtime but was not exported via types until that PR.

[stevenwdv]

@OrKoN Ah, hadn't seen that. Yes that would cover my current needs, although I wonder what the reason is for not exposing it for all JSHandles?

[OrKoN]

@stevenwdv JSHandles could come from service workers or workers and, thus, might not have a frame associated with them. In general, if you have a JS handle you should be able to do :

  const handle = await page.evaluateHandle(() => 1 + 2);
  console.log((await handle.evaluateHandle(() => document.body)).frame);

to see if JSHandle's context has DOM and has a frame. I guess the issue is then resolved? Let me know if there are additional use cases we overlooked.