Pls close topic, questions moved to ticket.
0 .constructor is a slightly weird construct (no pun intended ) but apparently a valid statement.
Try to replace it with
new Number().constructor and I’d assume Cloudflare wont optimise to an invalid state. Alternatively,
0.0.constructor should work too.
This was not answering your question, as I dont have the answers. This was providing you with a potential fix.