Javascript version still using Node 8

C++ Translation.

python new test framework is required. updated in this fork

Python Description agnostic and solution ungolfed

Description should be language-agnostic

Python: reference solution and translator's solution should be ungolfed.

Description should be language-agnostic

JS Node 18 should be enabled

C translation (author inactive)

Ruby 3.0 should be enabled, see this to learn how to do it

Ruby 3.0 should be enabled, see this to learn how to do it

"If you get something that's not a number at all, return false."

I think it will be good to add to Basic Tests case with something like union_jack('7') -> expected: False.
It will clearly show what is 'not number at all' because in some katas such 'numbers' are still valid numbers in others katas no.

this kata has to be completely rewritten. Asking for a string with float representation is just non sense.
Some options:

1. ask only for the float value (the string has no interest)
2. ask for a tuple (string, float), but well... the string has no interest... -> back to option 1+
3. at least, rewrite the solution so that the float steps are handled correctly:

• use math.pi (python) and tell about it in the description
• do the division as the very last operation. Not the first one like it is right now... x/