Unfortunately, I didn't get an answer.

You have right. When I try it in that way, everything was right. I didn't now that the name of the function is also important. Thank you for your answer!

Hello!
In te VS I'm getting good results, but here i'm getting this message:
Fixed tests
ReferenceError: filter_list is not defined
at Context. (test.js:15:12)
at process.processImmediate (node:internal/timers:471:21)
Random tests
ReferenceError: filter_list is not defined
at Context. (test.js:37:14)
at process.processImmediate (node:internal/timers:471:21)

Could someone explain me what is going on?

Language is JS.

Hello to everyone! I'm new here. Could you please explain me where and how to put code to analyze it with the others?