Added and updated the solution, thanks for finding a breaking scenario. I've updated the description to assume there will be not chained mentions also e.g. @Joe@Anter.

Usernames can consist of alphanumeric characters in any order and will not contain other types of characters.

Now add this test case: "@Joe_was_here", ["Joe"] expecting ["Joe"]

I've updated the description with this clarified - thanks for your input.

Great idea thanks - test added.

It should be explained what can be in a username: ascii letters + digits only? (Abc123) Any order? (123abc) Dashes allowed? (abc-123) Underscores? (abc_123) Unicode? (战神)

should add some edge cases, like:

• "@Joker said", ["Jo"] expecting []

I'm trying to improve it to be up to standard, if you have any feedback i'd be happy to hear it.

deja-vu?

( JS ) Cleaning up the template a little would not have hurt. This looked done completely lovelessly.

Not in JS they weren't.

( JS )

It's too late for this kata ( it's retired ), but please note the difference between assert and assert.deepEqual.

assert will accept any truthy value. That is not what you want.

Random tests added

No random tests

Republished