Fired before the web browser inputs, deletes, or formats some data.
This event is introduced by InputObserver and available by default in all editor instances (attached by EditingView).
InputObserver
EditingView
args : tuple
module:engine/view/observer/inputobserver~ViewDocumentInputEvent#args
name : 'beforeinput'
module:engine/view/observer/inputobserver~ViewDocumentInputEvent#name
object