This method is meant to simply convert a boolean value to an English string representation.

There is no requirement in the description to check that the value passed is actually boolean before returning a result.

I've made the instruction wording clearer.

Thanks for your feedback.

I've improved the test failure messages.

Thanks for your feedback.

This was a really enjoyable one, with a huge range of solutions.

The short solution is very cool. I'm so glad I know that method now :)

Oops, bad syntax in my test cases! Fixed and re-published.

Thanks for looking.

"Format a list of names"

Given: an array containing hashes of names

Return: a string of names separated by commas except for the last two names, which should be separated by an ampersand.

list([{name: 'Bart'},{name: 'Lisa'},{name: 'Maggie'}])

should return 'Bart, Lisa & Maggie'

list([{name: 'Bart'},{name: 'Lisa'}])

should return 'Bart & Lisa'

list([{name: 'Bart'}])

should return 'Bart'