I fixed it, thanks

Your implementation of the random tests makes it possible for the function to be passed no arguments, which contradicts the description.

Python translation

Rejected

Haskell translation waiting for approval, please

https://www.codewars.com/kumite/662e6f30eda528006aca4392?sel=662e6f30eda528006aca4392

Nice. Something new for me. Hint: look up functions with double parentheses or currying functions.

Oh god:0

This kata only supports up to node 8 and the ?? operator was introduced in node 14.

What is wrong?

/home/codewarrior/index.js:7
    calculate.counter = calculate.counter ?? 0;
                                           ^

SyntaxError: Unexpected token ?
    at createScript (vm.js:80:10)
    at Object.runInThisContext (vm.js:139:10)
    at Module._compile (module.js:616:28)
    at Object.Module._extensions..js (module.js:663:10)
    at Module.load (module.js:565:32)
    at tryModuleLoad (module.js:505:12)
    at Function.Module._load (module.js:497:3)
    at Module.require (module.js:596:17)
    at require (internal/module.js:11:18)
    at [eval]:1:1
    

Im sure that my function works... ??- defines whether variable is defined, if this one doesn define so its takes value after??` sign

Its too difficult for 7kyu

kata very good!

Duplicate of other "implement a currying function" katas.

Fixed.

Needs random test cases

I think, it's worth it to introduce edge cases like calcualte(1)() or even calcualte(1)() which should return 0 or undefined.