How to configure the `app` for custom elements

[KonnorRogers]

How does one configure the Vue SFC playground https://play.vuejs.org/ for custom elements?

I can't find any documentation on how to pass options to createApp() for isCustomElement

https://vuejs.org/api/application.html#app-config-compileroptions-iscustomelement

[filimon-danopoulos-stratsys]

I too request this, I can't to seem to find a way to provide this setting.