I applied through recruiter, first round coding into a google drive spreadsheet two tasks, one for recursion, the other to shorten function code (remove redundant pieces of it). The time should have been 30 minutes but I finished later and it was not a problem.
The second round was a quick function coding also into a spreadsheet while skyping with a developer, it did not seem complicated however I did not even understood the assignment correctly in the time.
All basic javascript (no libraries, frameworks etc., no need for es6 etc.)