CloseWatcherThe CloseWatcher API listens and responds to close requests on in-page components, such as modals, popovers, and sidebars.limitedhttps://html.spec.whatwg.org/multipage/interaction.html#close-requests-and-close-watchershttps://developer.mozilla.org/docs/Web/API/CloseWatcherapi.CloseWatcherapi.CloseWatcher.CloseWatcherapi.CloseWatcher.cancel_eventapi.CloseWatcher.closeapi.CloseWatcher.close_eventapi.CloseWatcher.destroyapi.CloseWatcher.requestClosehttps://nowyoucanuse.com/features--closewatcher.html