Class type `File.progressEventTarget`

method onloadstart : ('self Js.t, 'self progressEvent Js.t) Dom.event_listener Js.writeonly_prop
method onprogress : ('self Js.t, 'self progressEvent Js.t) Dom.event_listener Js.writeonly_prop
method onload : ('self Js.t, 'self progressEvent Js.t) Dom.event_listener Js.writeonly_prop
method onabort : ('self Js.t, 'self progressEvent Js.t) Dom.event_listener Js.writeonly_prop
method onerror : ('self Js.t, 'self progressEvent Js.t) Dom.event_listener Js.writeonly_prop
method onloadend : ('self Js.t, 'self progressEvent Js.t) Dom.event_listener Js.writeonly_prop