The Office IV - Find a Meeting Room.js

/*
Description:
Your job at E-Corp is both boring and difficult. It isn't made any easier by the fact that everyone constantly wants to have a meeting with you, and that the meeting rooms are always taken!

In this kata, you will be given an array. Each value represents a meeting room. Your job? Find the first empty one and return it's index (N.B. There may be more than one empty room in some test cases).

'X' --> busy 'O' --> empty

If all rooms are busy, return 'None available!'.
*/

function meeting(x){
  if (x.indexOf('O')===-1) return'None available!'
  return x.indexOf('O')
}