compose event firing before content is ready

[woniesong92]

issue

compose event fires before the content inside the compose element is ready.

repro steps

gmail.observe.on('compose', function (compose, type) {
  console.log(compose.body()) // undefined

  setTimeout(() => {console.log(compose.body())}, 10 * 1000)) // content is ready usually after 10 seconds
}

attempts to fix

• Tried waiting until document.readyState to become complete from interactive. However, the compose element is still not ready by then. Alternatively, I could wait for compose.dom.body() to not be undefined, which works for my usecase.

[josteink]

Not everyone needs all parts of the compose to be ready when this event fires, so I don't think there's any concrete spec or behaviour we can say is "most correct" here.

Alternatively, I could wait for compose.dom.body() to not be undefined, which works for my usecase.

As such, this would be my suggestion too.