Regex works on browser but not in Node.js

Question

I have a regex: /(?/g. Works fine in browser console if I do \"(<> * * * <

Answer 1

As an answer as well (more space):
Unless node.js uses it's own regex engine and not the JavaScript one, lookbehinds are not supported in JS, thus (? cannot work. To somewhat mimic this feature from other programming languages, have a look at Flagrant Badassery or use additional packages like node-re2 or node-perl-regex.

As for the differences between Browsers, Chrome does support lookbehinds.