Nice. Additionally the description could include a hint on wether multiple '-' / '_' are something to worry about as input (e.g. "camel___case--this").

si ven esto, el test si funciona, deben verificar el planteamiento de los test porque ahi cosas que no mencionan en la descripcion del ejercicio

creo que ya entiendo, es como si hubiese un test que recibe un string vacio, y al string estar vacio se genera el error, pero en el ejercicio no se menciona que aya un test que verifique eso

I could see it, please read this: https://docs.codewars.com/training/troubleshooting#post-discourse

Already gave you a hint about what makes your code fail, now try to patch your code so it doesn't happen. Did you try calling your function in VSC with "" as input? Did it fail?

Please write in english here. Your code works there because you didn't use the same input your code fails here, it's failing the first sample test, the one with an empty string as input. If you try your code in VSC with that, it'll fail there too.

el ejercicio presenta error, en mi visualStudio pasa las pruebas pero en la plataforma aparece error