Regarding the browser compatibility of gojs?

A syntax error occurred in the chrome56 version.

Uncaught SyntaxError : unexpected token )

I want to know what browsers gojs supports and what version? Is there a clear message to tell me.

All browsers that support HTML5 and ES2012. Basically that means all modern browsers. But we have stopped testing on older versions of browsers.

What was the cause of the syntax error?

Chrome version 56 was released more than three years ago.