I was using 6.6.0 all this time, and it took using 0.10-babel for this to work. It's rediculous that I had to switch to a specific Node version, and should at least be mentioned in the instructions.

This stupid error has been driving me crazy ever since I started this Kata, as it's the only thing keeping me from completion.

I'm starting to wonder if the author even checks CW, since I've had a question up for another one of his katas for weeks (A similar issue).

Wow! This is my first time seeing the Bitwise operators used, but I'll definitely keep them in mind next time.

Everything works perfectly fine in tests including my added non-instance call to the class method, but once I submit every 3nth tests fails with a similar error to the following leaving me with a total of 84 passed, and 33 failed:

Unhandled rejection TestError: Expected: 'Solution {\n firstName: 'fezt7v0vec71qkhuxr',\n lastName: 'wwudua4st3vgwo03sor',\n age: 84,\n gender: 'iei4kqwnrnfnjzrjatt9' }', instead got: 'Person {\n firstName: 'fezt7v0vec71qkhuxr',\n lastName: 'wwudua4st3vgwo03sor',\n age: 84,\n gender: 'iei4kqwnrnfnjzrjatt9' }'

Wow! Thanks! I was bookmarking all of my katas, just so I didn't have to find them again. This removes the need for that. :)

Could you, please update the description? It's not very clear what the person is to do to complete the challenge. I know you want to be very subtle about it, but it's a bit too vague relying completely on the quote.