I am sorry, but this Kata does not force you to use any language related features ..... IMO, it should be changed.

At the moment, I would mark that (JS):

1. the spec is for ECMAScript 2015 (ES6).
2. Advise to check browser comatibility
3. Give a link for the docs

I would say direclty what is expected output. It is misleading that there is sequence of dividers given and the amount of dividers. Firstly, I returned all the values that are dividers. Generally, I would add "Return value is expected to be integer representing number of dividers..." or sth similar to that.

Got the same ........ and as Arosemena said: "details said the decimals must be truncated to 2 decimals not rounded :)", but the description says: "Your objective is to add formatting to a plain number to display it as price."

When I calculate price, I always thnink of rounding down or up, dont You ?

My suggestion is to mark in the description "no rounding". The word price is misleading here imo.