We can add this at the first line: if (Object.keys(recipe).length === 0) return 0;
It will save us from empty recipe.

In the rest this solution seems to be the best practice.

All the logic that I have made for solving the problem too, but written laconically in one line, I really like this style.

neat!

the clearest and the shortest write

Say hi to olg good Gauss))