This feature is experimental. It may be changed or removed in a future version.
Returns whether the given element matches the given CSS selector.
Other than up.element.matches() this function supports non-standard selectors like :main or :layer.
up.element.matches()
:main
:layer
The layer for which to match.
Pseudo-selectors like :main may expand to different selectors in different layers.
Required if { layer: 'new' } is passed.
{ layer: 'new' }
