Kata

"It should work for random inputs too"

This is not a useful custom error message.

Testing for o,o,o,o,~,o,o,o,o,o,o,o,o,o,o,o,o,o,o,B,o,o,o,o,o,o,o,o,o,o,~,o,o,~,o,o,~,o,o,~,o,o,o,o,o,o,o,o,o

That's completely useless.

Wow, the random generator for this isn't going to be trivial.

Pete, I like your katas but after solving this one I couldn't eat breakfast.

Flat and FlatMap doesnt works in codewars?

If .. there is no baby

This is not tested.

Also, something tells me that would not be "calm before the storm" - that would be ":O !! WHERE'S THE BABY ?!" ( in large, friendly letters, of course :)

Didn't check, but are we sure this is an impossible case?

~ o o o
~ o o o
~ o o o
B ~ ~ ~

Or what should we return in that case if it is possible?

Lack of fixed cases where the baby is not connected to at least three straight scents, like

~ ~ ~
o o o
B o o

~ o o
~ ~ ~
~ o B

[ [ 'o', 'o', 'o', 'o', 'o', 'o', 'o' ],
  [ 'o', 'o', 'o', 'o', 'o', 'o', 'B' ],
  [ 'o', '~', '~', '~', 'o', 'o', 'o' ],
  [ 'o', 'o', 'o', 'o', 'o', 'o', 'o' ],
  [ 'o', 'o', 'o', 'o', 'o', 'o', 'o' ],
  [ 'o', 'o', 'o', 'o', 'o', 'o', 'o' ],
  [ 'o', '~', 'o', '~', 'o', 'o', 'o' ] ]
It should work for random inputs too - Expected: 'Calm before the storm', instead got: 'You disgust me!'

Ummm... rules are not clear...