Yep, looks much more sexier, thanks.

doh! thank you

thanks for the translation, but

getting a lot of InvalidBond and UnlockedMolecule is not defined errors in what appears to be the Test Suite. Forgive me if I am just being stupid.

ReferenceError: UnlockedMolecule is not defined
at Test.it
at begin
at Object.it
at Test.describe
at /runner/frameworks/javascript/cw-2.js:159:11
at Promise._execute
at Promise._resolveFromExecutor
at new Promise
at Object.describe
at /home/codewarrior/index.js:738:6
at /home/codewarrior/index.js:1319:5
at Object.handleError

congratulations

not correct but well done on passing the tests

so maybe clever, but not best practice

It would be good to know whether or not this is a chai incompatibility error, or whether it is a requirement for the task that Thing not have anything using Symbols...:hmm?

Yup, I too am at this point.

true enough, but at time of writing the code, default parameters threw out the syntax highlighting on codewars

This works, but much nicer in ES6 is to use default parameters https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Functions/Default_parameters

random tests added

Thanks so much for this very helpful description. I finally got it done!

Not sure if something updated but it appears System.out.print now works to some extent. The only condition is that your code compiles perfectly. Once that's satisfied, you should be able to print to console messages in your solution. You can also modify the example test cases to print out each case.