Goed dag, flemish is similar to dutch (holland) welcom it is welkom then:) thaks anyway for the exe

Actually for Lithuanian it's "Sveiki atvykę" or just "Sveiki" =)

Great solution! Is this considered better practice than using the Number.isInteger() javascript function? Perhaps it's faster?

This would require to update all languages, so not ideal. Also, users can train on how to write their own dictionary or hashmap that way!

OP solved it, closing

There are no restrictions on how a problem can be solved, unless the author explictly establishes tests for such cases.

Because all of languages are only examples, and they don't mean anything special here.

Thanks! That was an inteesting one.

The only thing that confused this type of database list or dict. The author does not give a direct indication of the database typing.

The reason your code fails is because you copied descriptions of invalid tests and thought they were meant to be the result, but the instructions say:

It should default to English ... in the event of an invalid input.

So, your foreign environment pass your code because it has been given incorrect results. The correct expected results are in place correctly here on this site, so you must base your code on that.

If you cannot prove that the kata has flawed code, do not post as an issue, post as a question. "It works on my machine" is not enough of a basis.