ReadonlyeditorReadonlylayoutEvery element the layout built, for a host that wants to reach one.
ReadonlyuiThe menubar, toolbar and status bar, for a host that wants to drive them.
Tear it all down: panes, listeners, autosave, chrome, the editor and the DOM this built. Safe to call twice. A framework that unmounts and mounts again, React's strict mode does exactly that, needs this to be complete, or the second editor competes with the first over the same document.
The mounted editor, and the one call that takes it back down.