Check if event exists

Hi all ! Could anyone suggest please… is it possible to check the same events when subscribe ? My has identical events and it call several times.

t {_channels: Array[0]}
_channels: Array[0]
ShowProgressBar:data: Array[2]
Update:complete: Array[2]
length: 0
stream:add: Array[2]
stream:remove: Array[2]
updater:data: Array[2]
updaterTreeInsert:data: Array[2]
user:logout: Array[1]
proto: Array[0]
proto: t