Functional Programming - Implement map on a Prototype

Tell us what’s happening:
[1, 1, 2, 5, 2].myMap((element, index, array) => array[index + 1] || array[0]) should return [1, 2, 5, 2, 1]

Your code so far

Array.prototype.myMap = function(callback) {
  const newArray = [];
  // Only change code below this line
    this.forEach(a => newArray.push(callback(a)));
  // Only change code above this line
  return newArray;
};

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Challenge: Functional Programming - Implement map on a Prototype

Link to the challenge:

Can this code handle the callback here:

How many arguments are there in the callback in the test?

thank you very much sir

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