Polyfill for map function in JavaScript

Array.prototype.myMap = function (callbackFn, thisArg) {
  let array = this;
  let returnedArray = [];

  for (let i = 0; i < array.length; i++) {
    let callbackArguments = [array[i], i, array];

    if (thisArg) {
      returnedArray.push(callbackFn.call(thisArg, ...callbackArguments));
    } else {
      returnedArray.push(callbackFn(...callbackArguments));
    }
  }

  return returnedArray;
};

// Arrow function
myMap((element) => {
  /* ... */
})
myMap((element, index) => {
  /* ... */
})
myMap((element, index, array) => {
  /* ... */
})

// Callback function
myMap(callbackFn)
myMap(callbackFn, thisArg)

// Inline callback function
myMap(function (element) {
  /* ... */
})
myMap(function (element, index) {
  /* ... */
})
myMap(function (element, index, array) {
  /* ... */
})
myMap(function (element, index, array) {
  /* ... */
}, thisArg)