While trying to host my server code on Colyseus Arena, I've come up with a problem - I can't use performance.now() because it is undefined. Although it works fine on local server.
For illustration I took a simple server template and put logging of performance.now() in onJoin method
And with a simple client that just joins the room I have a following log
Is there any idea why it could be the case? Is there any workaround?