The spec states that a call to screen.orientation.unlock() returns void.

However Firefox throws an internal "Not supported" exception on the desktop browser.

Because nothing is returned, the following approaches do not appear to work:

screen
  .orientation.unlock()
  .catch(error => console.error('[Screen orientation]', error))

try {
  screen.orientation.unlock()
} catch (error) {
  console.error('[Screen orientation]', error)
}

Is there a way to handle / suppress this error?