Your code now fails for this -->

Testing for [] and []

expected false to equal true

Your code returns false, but correct output is true

(I did not actually write the JSFuck myself, just used an encoder)
You can use https://jscrew.it/ to decode it! Enjoy it :D

For this input the correct answer is false, so you are mistaken somewhere. Read this: https://docs.codewars.com/training/troubleshooting/

Printing the input you can narrow down the input values that make your code fail and debug your code easier.

Print the input: https://docs.codewars.com/training/troubleshooting#print-input