docs: function intFromNumbers(numbers) {
    if (numbers.length === 0) { return }
  
    // Find the largest number.
    let max = numbers[0]
    let maxi = 0  // max index
    numbers.forEach((n, i) => {if (max < n) { max = n; maxi = i }})
  
    // Compute the corresponding prior number.
    let priorNumber = intFromNumbers(numbers.slice(0, maxi))
    if (priorNumber === undefined) { priorNumber = 1 }
    let posteriorNumber = intFromNumbers(numbers.slice(maxi + 1))
    if (posteriorNumber === undefined) { posteriorNumber = 0 }
  
    return priorNumber * max + posteriorNumber
  }