SyntaxError: Unexpected token '=' [Safari 17]

[genyslt]

In Safari 17 there is a syntax error: SyntaxError: Unexpected token '='

Browser: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.1.2 Safari/605.1.15

File: base.js
Line: 508