diff --git a/.results.json b/.results.json
new file mode 100644
index 000000000..1912d96ba
--- /dev/null
+++ b/.results.json
@@ -0,0 +1,396 @@
+{
+  "stats": {
+    "suites": 11,
+    "tests": 27,
+    "passes": 27,
+    "pending": 0,
+    "failures": 0,
+    "start": "2025-05-22T16:27:13.512Z",
+    "end": "2025-05-22T16:27:13.626Z",
+    "duration": 114
+  },
+  "tests": [
+    {
+      "title": "calls alert with each element passed",
+      "fullTitle": "index.js myEach calls alert with each element passed",
+      "duration": 0,
+      "currentRetry": 0,
+      "err": {}
+    },
+    {
+      "title": "calls alert properly on object values",
+      "fullTitle": "index.js myEach calls alert properly on object values",
+      "duration": 1,
+      "currentRetry": 0,
+      "err": {}
+    },
+    {
+      "title": "returns the original collection",
+      "fullTitle": "index.js myEach returns the original collection",
+      "duration": 0,
+      "currentRetry": 0,
+      "err": {}
+    },
+    {
+      "title": "successfully returns a correctly populated array",
+      "fullTitle": "index.js myMap successfully returns a correctly populated array",
+      "duration": 0,
+      "currentRetry": 0,
+      "err": {}
+    },
+    {
+      "title": "does not modify the original array",
+      "fullTitle": "index.js myMap does not modify the original array",
+      "duration": 0,
+      "currentRetry": 0,
+      "err": {}
+    },
+    {
+      "title": "successfully returns a correctly populated array from modified object values",
+      "fullTitle": "index.js myMap successfully returns a correctly populated array from modified object values",
+      "duration": 0,
+      "currentRetry": 0,
+      "err": {}
+    },
+    {
+      "title": "does not modify the original object",
+      "fullTitle": "index.js myMap does not modify the original object",
+      "duration": 0,
+      "currentRetry": 0,
+      "err": {}
+    },
+    {
+      "title": "returns the correct reduced value when passed an initial value",
+      "fullTitle": "index.js myReduce returns the correct reduced value when passed an initial value",
+      "duration": 0,
+      "currentRetry": 0,
+      "err": {}
+    },
+    {
+      "title": "returns the correct reduced value when not passed an initial value",
+      "fullTitle": "index.js myReduce returns the correct reduced value when not passed an initial value",
+      "duration": 0,
+      "currentRetry": 0,
+      "err": {}
+    },
+    {
+      "title": "does not modify the original array",
+      "fullTitle": "index.js myReduce does not modify the original array",
+      "duration": 0,
+      "currentRetry": 0,
+      "err": {}
+    },
+    {
+      "title": "returns the correct reduced value from object values",
+      "fullTitle": "index.js myReduce returns the correct reduced value from object values",
+      "duration": 0,
+      "currentRetry": 0,
+      "err": {}
+    },
+    {
+      "title": "does not modify the original object",
+      "fullTitle": "index.js myReduce does not modify the original object",
+      "duration": 0,
+      "currentRetry": 0,
+      "err": {}
+    },
+    {
+      "title": "returns the value if found",
+      "fullTitle": "index.js myFind returns the value if found",
+      "duration": 0,
+      "currentRetry": 0,
+      "err": {}
+    },
+    {
+      "title": "does not traverse the whole array if the value is found early",
+      "fullTitle": "index.js myFind does not traverse the whole array if the value is found early",
+      "duration": 0,
+      "currentRetry": 0,
+      "err": {}
+    },
+    {
+      "title": "returns undefined if the value is not present",
+      "fullTitle": "index.js myFind returns undefined if the value is not present",
+      "duration": 0,
+      "currentRetry": 0,
+      "err": {}
+    },
+    {
+      "title": "correctly filters for values that the callback evaluates as true",
+      "fullTitle": "index.js myFilter correctly filters for values that the callback evaluates as true",
+      "duration": 0,
+      "currentRetry": 0,
+      "err": {}
+    },
+    {
+      "title": "correctly returns an empty array if no matching values are found",
+      "fullTitle": "index.js myFilter correctly returns an empty array if no matching values are found",
+      "duration": 0,
+      "currentRetry": 0,
+      "err": {}
+    },
+    {
+      "title": "correctly returns the size of the collection when an array is passed",
+      "fullTitle": "index.js mySize correctly returns the size of the collection when an array is passed",
+      "duration": 0,
+      "currentRetry": 0,
+      "err": {}
+    },
+    {
+      "title": "correctly returns the size of the collection (amount of keys) when an object is passed",
+      "fullTitle": "index.js mySize correctly returns the size of the collection (amount of keys) when an object is passed",
+      "duration": 0,
+      "currentRetry": 0,
+      "err": {}
+    },
+    {
+      "title": "returns the first element of the collection",
+      "fullTitle": "index.js myFirst returns the first element of the collection",
+      "duration": 0,
+      "currentRetry": 0,
+      "err": {}
+    },
+    {
+      "title": "returns the first n elements of the collection when the second optional argument (n) is provided",
+      "fullTitle": "index.js myFirst returns the first n elements of the collection when the second optional argument (n) is provided",
+      "duration": 0,
+      "currentRetry": 0,
+      "err": {}
+    },
+    {
+      "title": "returns the last element of the collection",
+      "fullTitle": "index.js myLast returns the last element of the collection",
+      "duration": 0,
+      "currentRetry": 0,
+      "err": {}
+    },
+    {
+      "title": "returns the last n elements of the collection when the second optional argument (n) is provided",
+      "fullTitle": "index.js myLast returns the last n elements of the collection when the second optional argument (n) is provided",
+      "duration": 0,
+      "currentRetry": 0,
+      "err": {}
+    },
+    {
+      "title": "retrieves all the names of the object's own enumerable properties",
+      "fullTitle": "index.js myKeys retrieves all the names of the object's own enumerable properties",
+      "duration": 0,
+      "currentRetry": 0,
+      "err": {}
+    },
+    {
+      "title": "does not modify the original object",
+      "fullTitle": "index.js myKeys does not modify the original object",
+      "duration": 0,
+      "currentRetry": 0,
+      "err": {}
+    },
+    {
+      "title": "retrieves all the values of the object's own properties",
+      "fullTitle": "index.js myValues retrieves all the values of the object's own properties",
+      "duration": 0,
+      "currentRetry": 0,
+      "err": {}
+    },
+    {
+      "title": "does not modify the original object",
+      "fullTitle": "index.js myValues does not modify the original object",
+      "duration": 0,
+      "currentRetry": 0,
+      "err": {}
+    }
+  ],
+  "pending": [],
+  "failures": [],
+  "passes": [
+    {
+      "title": "calls alert with each element passed",
+      "fullTitle": "index.js myEach calls alert with each element passed",
+      "duration": 0,
+      "currentRetry": 0,
+      "err": {}
+    },
+    {
+      "title": "calls alert properly on object values",
+      "fullTitle": "index.js myEach calls alert properly on object values",
+      "duration": 1,
+      "currentRetry": 0,
+      "err": {}
+    },
+    {
+      "title": "returns the original collection",
+      "fullTitle": "index.js myEach returns the original collection",
+      "duration": 0,
+      "currentRetry": 0,
+      "err": {}
+    },
+    {
+      "title": "successfully returns a correctly populated array",
+      "fullTitle": "index.js myMap successfully returns a correctly populated array",
+      "duration": 0,
+      "currentRetry": 0,
+      "err": {}
+    },
+    {
+      "title": "does not modify the original array",
+      "fullTitle": "index.js myMap does not modify the original array",
+      "duration": 0,
+      "currentRetry": 0,
+      "err": {}
+    },
+    {
+      "title": "successfully returns a correctly populated array from modified object values",
+      "fullTitle": "index.js myMap successfully returns a correctly populated array from modified object values",
+      "duration": 0,
+      "currentRetry": 0,
+      "err": {}
+    },
+    {
+      "title": "does not modify the original object",
+      "fullTitle": "index.js myMap does not modify the original object",
+      "duration": 0,
+      "currentRetry": 0,
+      "err": {}
+    },
+    {
+      "title": "returns the correct reduced value when passed an initial value",
+      "fullTitle": "index.js myReduce returns the correct reduced value when passed an initial value",
+      "duration": 0,
+      "currentRetry": 0,
+      "err": {}
+    },
+    {
+      "title": "returns the correct reduced value when not passed an initial value",
+      "fullTitle": "index.js myReduce returns the correct reduced value when not passed an initial value",
+      "duration": 0,
+      "currentRetry": 0,
+      "err": {}
+    },
+    {
+      "title": "does not modify the original array",
+      "fullTitle": "index.js myReduce does not modify the original array",
+      "duration": 0,
+      "currentRetry": 0,
+      "err": {}
+    },
+    {
+      "title": "returns the correct reduced value from object values",
+      "fullTitle": "index.js myReduce returns the correct reduced value from object values",
+      "duration": 0,
+      "currentRetry": 0,
+      "err": {}
+    },
+    {
+      "title": "does not modify the original object",
+      "fullTitle": "index.js myReduce does not modify the original object",
+      "duration": 0,
+      "currentRetry": 0,
+      "err": {}
+    },
+    {
+      "title": "returns the value if found",
+      "fullTitle": "index.js myFind returns the value if found",
+      "duration": 0,
+      "currentRetry": 0,
+      "err": {}
+    },
+    {
+      "title": "does not traverse the whole array if the value is found early",
+      "fullTitle": "index.js myFind does not traverse the whole array if the value is found early",
+      "duration": 0,
+      "currentRetry": 0,
+      "err": {}
+    },
+    {
+      "title": "returns undefined if the value is not present",
+      "fullTitle": "index.js myFind returns undefined if the value is not present",
+      "duration": 0,
+      "currentRetry": 0,
+      "err": {}
+    },
+    {
+      "title": "correctly filters for values that the callback evaluates as true",
+      "fullTitle": "index.js myFilter correctly filters for values that the callback evaluates as true",
+      "duration": 0,
+      "currentRetry": 0,
+      "err": {}
+    },
+    {
+      "title": "correctly returns an empty array if no matching values are found",
+      "fullTitle": "index.js myFilter correctly returns an empty array if no matching values are found",
+      "duration": 0,
+      "currentRetry": 0,
+      "err": {}
+    },
+    {
+      "title": "correctly returns the size of the collection when an array is passed",
+      "fullTitle": "index.js mySize correctly returns the size of the collection when an array is passed",
+      "duration": 0,
+      "currentRetry": 0,
+      "err": {}
+    },
+    {
+      "title": "correctly returns the size of the collection (amount of keys) when an object is passed",
+      "fullTitle": "index.js mySize correctly returns the size of the collection (amount of keys) when an object is passed",
+      "duration": 0,
+      "currentRetry": 0,
+      "err": {}
+    },
+    {
+      "title": "returns the first element of the collection",
+      "fullTitle": "index.js myFirst returns the first element of the collection",
+      "duration": 0,
+      "currentRetry": 0,
+      "err": {}
+    },
+    {
+      "title": "returns the first n elements of the collection when the second optional argument (n) is provided",
+      "fullTitle": "index.js myFirst returns the first n elements of the collection when the second optional argument (n) is provided",
+      "duration": 0,
+      "currentRetry": 0,
+      "err": {}
+    },
+    {
+      "title": "returns the last element of the collection",
+      "fullTitle": "index.js myLast returns the last element of the collection",
+      "duration": 0,
+      "currentRetry": 0,
+      "err": {}
+    },
+    {
+      "title": "returns the last n elements of the collection when the second optional argument (n) is provided",
+      "fullTitle": "index.js myLast returns the last n elements of the collection when the second optional argument (n) is provided",
+      "duration": 0,
+      "currentRetry": 0,
+      "err": {}
+    },
+    {
+      "title": "retrieves all the names of the object's own enumerable properties",
+      "fullTitle": "index.js myKeys retrieves all the names of the object's own enumerable properties",
+      "duration": 0,
+      "currentRetry": 0,
+      "err": {}
+    },
+    {
+      "title": "does not modify the original object",
+      "fullTitle": "index.js myKeys does not modify the original object",
+      "duration": 0,
+      "currentRetry": 0,
+      "err": {}
+    },
+    {
+      "title": "retrieves all the values of the object's own properties",
+      "fullTitle": "index.js myValues retrieves all the values of the object's own properties",
+      "duration": 0,
+      "currentRetry": 0,
+      "err": {}
+    },
+    {
+      "title": "does not modify the original object",
+      "fullTitle": "index.js myValues does not modify the original object",
+      "duration": 0,
+      "currentRetry": 0,
+      "err": {}
+    }
+  ]
+}
\ No newline at end of file
diff --git a/index.js b/index.js
index e69de29bb..cf161c11b 100644
--- a/index.js
+++ b/index.js
@@ -0,0 +1,130 @@
+// COLLECTION FUNCTIONS (WORK WITH ARRAYS OR OBJECTS)
+function ensureArray(collection) {
+  if (Array.isArray(collection)) {
+    return collection;
+  } else if (typeof collection === "object" && collection != null) {
+    return Object.values(collection);
+  } else {
+    return [];
+  }
+}
+
+function myEach(collection, callback) {
+  const array = ensureArray(collection);
+
+  for (const element of array) {
+    callback(element);
+  }
+
+  return collection;
+}
+
+function myMap(collection, callback) {
+  const array = ensureArray(collection);
+  const newArray = [];
+
+  for (const element of array) {
+    newArray.push(callback(element));
+  }
+
+  return newArray;
+
+}
+
+function myReduce(collection, callback, acc) {
+  const array = ensureArray(collection);
+  let startIndex = 0;
+
+  if (acc === undefined) {
+    acc = array[0];
+    startIndex = 1;
+  }
+
+  for (let i = startIndex; i < array.length; i++) {
+    acc = callback(acc, array[i], collection);
+  }
+
+  return acc;
+}
+
+function myFind(collection, predicate) {
+  const array = ensureArray(collection);
+  let returnValue = undefined;
+
+  for (let i = 0; i < array.length; i++) {
+    if (predicate(array[i]) === true) {
+      returnValue = array[i];
+      break;
+    }
+  }
+  return returnValue;
+}
+
+function myFilter(collection, predicate) {
+  const array = ensureArray(collection);
+  const trueValues = [];
+
+  for (const value of array) {
+    if (predicate(value) === true) {
+      trueValues.push(value);
+    }
+  }
+
+  return trueValues;
+}
+
+function mySize(collection) {
+  const array = ensureArray(collection);
+  let count = 0;
+
+  for (let i = 0; i < array.length; i++) {
+    count++;
+  }
+
+  return count;
+}
+
+// ARRAY FUNCTIONS
+function myFirst(array, n) {
+  if (n === undefined) {
+    return array[0];
+  } else {
+    const slice = [];
+    for (let i = 0; i < n; i++) {
+      slice.push(array[i])
+    }
+    return slice;
+  }
+}
+
+function myLast(array, n) {
+  if (n === undefined) {
+    return array[array.length - 1];
+  } else {
+    const slice = [];
+    for (let i = array.length - n; i < array.length; i++) {
+      slice.push(array[i]);
+    }
+    return slice;
+  }
+}
+
+// OBJECT FUNCTIONS
+function myKeys(object) {
+  const keys = [];
+
+  for (const key in object) {
+    keys.push(key);
+  }
+  return keys;
+}
+
+function myValues(object) {
+  const values = [];
+
+  for (const value in object) {
+    values.push(object[value]);
+  }
+
+  return values;
+}