meanOrThrow

meanOrThrow(array)

Returns the mean (average) value from array, or throws an error if the array is empty.

data-first

meanOrThrow([1, 2, 3]); // 2
meanOrThrow([]); // throws FnError

data-last

pipe([1, 2, 3], meanOrThrow()); // 2
pipe([], meanOrThrow()); // throws FnError