Average Multidimensional Array Javascript (recursive)

averange_multidimensional_array.js

const averange = (input) => {
    const {sum, count} = sumAndCount(input)
    return sum/count
}

const sumAndCount = (arr) => {
  let count = 0
  const sum = arr.reduce((acc, element) => {
    if(Array.isArray(element)) {
      const res = sumAndCount(element)
      count += res.count
      acc += res.sum
    } else {
      count += 1
      acc += element
    }
    return acc
  }, 0)
  return {count, sum}
}

// Given: 
const data = [[1,2,3], [4,5,6], 7]
// Use: 
averange(data)
// Outputs: 4