The value of up.layer.current will be set to the this layer
while event listeners are running.
Example
let rootLayer = up.layer.root
let overlay = await up.layer.open()
rootLayer.on('foo', (event) => console.log('Listener called'))
rootLayer.emit('foo') // logs "Listener called"
overlay.emit('foo') // listener is not called
Parameters
eventType
required
The event type, e.g. my:event.
string
[props={}]
optional
A list of properties to become part of the event object that will be passed to listeners.
