Write Higher Order Arrow Functions help please

This really hard for me to understand so if anyone can help please respond.
I had code in there but i lost it and its wrong anyway.

const realNumberArray = [4, 5.6, -9.8, 3.14, 42, 6, 8.34, -2];
const squareList = (arr) => {
  "use strict";
  // change code below this line
  const squaredIntegers = arr;
  // change code above this line
  return squaredIntegers;
// test your code
const squaredIntegers = squareList(realNumberArray);

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So you have a set of numbers (arr) and you need to loop through them. You are going to return a new array (squaredIntegers). If the number is an integer, square it and it goes in the new array.

filter takes an array and returns a new array with some values filtered (by running a function on every value that returns true to keep or false to drop) – this may help transforming the collection of mixed numbers into a collection of integers.

map takes an array and returns a new array where a function has been ran on every value – this may help squaring each number in your collection of integers.

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your explanation is so much clearer. now i can code.