57.mergeIntervals

Write a function named mergeIntervals that receives 2 parameters:

• an Array of objects representing intervals of numbers - intervals. Each object has the following props:

  • from: the smallest number in the interval
  • to: the biggest number in the interval
  • numbers: an Array of numbers in ascending order. All numbers are between from and to (inclusive).

  The intervals are non-overlapping and sorted ascending based on the from prop.

• another Array of intervals following the same structure - newIntervals

The function should merge both intervals into one and return it. It's important that the returned interval Array follows the same rules as the parameter ones.