diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-advanced-array-methods-by-building-a-statistics-calculator/635060a5c03c950f46174cb5.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-advanced-array-methods-by-building-a-statistics-calculator/635060a5c03c950f46174cb5.md
index e85d882fe27..8795e060483 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-advanced-array-methods-by-building-a-statistics-calculator/635060a5c03c950f46174cb5.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-advanced-array-methods-by-building-a-statistics-calculator/635060a5c03c950f46174cb5.md
@@ -18,7 +18,7 @@ The HTML and CSS have been provided for you. Feel free to explore the code – y
 You should use the `const` keyword to declare a variable `calculate`.
 
 ```js
-assert.match(code, /const\s*calculate/);
+assert.match(code, /const\s+calculate/);
 ```
 
 Your `calculate` variable should be a function.
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-advanced-array-methods-by-building-a-statistics-calculator/6352fe473d53592a40ae403b.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-advanced-array-methods-by-building-a-statistics-calculator/6352fe473d53592a40ae403b.md
index c354dd84c0d..a144d66e015 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-advanced-array-methods-by-building-a-statistics-calculator/6352fe473d53592a40ae403b.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-advanced-array-methods-by-building-a-statistics-calculator/6352fe473d53592a40ae403b.md
@@ -14,37 +14,37 @@ Within your empty `.reduce()` callback, declare a variable `difference` and set
 Your `reduce` callback should have a `difference` variable.
 
 ```js
-assert.match(getVariance.toString(), /variance\s*=\s*array\.reduce\(function\s*\(?\s*acc\s*,\s*el\s*\)?\s*\{\s*var\s*difference\s*=/);
+assert.match(getVariance.toString(), /variance\s*=\s*array\.reduce\(function\s*\(?\s*acc\s*,\s*el\s*\)?\s*\{\s*var\s+difference\s*=/);
 ```
 
 Your `difference` variable should be set to the value of `el` minus `mean`.
 
 ```js
-assert.match(getVariance.toString(), /variance\s*=\s*array\.reduce\(function\s*\(?\s*acc\s*,\s*el\s*\)?\s*\{\s*var\s*difference\s*=\s*el\s*-\s*mean\s*;/);
+assert.match(getVariance.toString(), /variance\s*=\s*array\.reduce\(function\s*\(?\s*acc\s*,\s*el\s*\)?\s*\{\s*var\s+difference\s*=\s*el\s*-\s*mean\s*;/);
 ```
 
 Your `reduce` callback should have a `squared` variable.
 
 ```js
-assert.match(getVariance.toString(), /variance\s*=\s*array\.reduce\(function\s*\(?\s*acc\s*,\s*el\s*\)?\s*\{\s*var\s*difference\s*=\s*el\s*-\s*mean\s*;\s*var\s*squared\s*=/);
+assert.match(getVariance.toString(), /variance\s*=\s*array\.reduce\(function\s*\(?\s*acc\s*,\s*el\s*\)?\s*\{\s*var\s+difference\s*=\s*el\s*-\s*mean\s*;\s*var\s+squared\s*=/);
 ```
 
 Your `squared` variable should be set to the value of `difference` to the power of 2.
 
 ```js
-assert.match(getVariance.toString(), /variance\s*=\s*array\.reduce\(function\s*\(?\s*acc\s*,\s*el\s*\)?\s*\{\s*var\s*difference\s*=\s*el\s*-\s*mean\s*;\s*var\s*squared\s*=\s*Math\.pow\(\s*difference\s*,\s*2\s*\);/);
+assert.match(getVariance.toString(), /variance\s*=\s*array\.reduce\(function\s*\(?\s*acc\s*,\s*el\s*\)?\s*\{\s*var\s+difference\s*=\s*el\s*-\s*mean\s*;\s*var\s+squared\s*=\s*Math\.pow\(\s*difference\s*,\s*2\s*\);/);
 ```
 
 Your `reduce` callback should return the value of `acc` plus `squared`.
 
 ```js
-assert.match(getVariance.toString(), /variance\s*=\s*array\.reduce\(function\s*\(?\s*acc\s*,\s*el\s*\)?\s*\{\s*var\s*difference\s*=\s*el\s*-\s*mean\s*;\s*var\s*squared\s*=\s*Math\.pow\(\s*difference\s*,\s*2\s*\);\s*return\s+acc\s*\+\s*squared\s*;/);
+assert.match(getVariance.toString(), /variance\s*=\s*array\.reduce\(function\s*\(?\s*acc\s*,\s*el\s*\)?\s*\{\s*var\s+difference\s*=\s*el\s*-\s*mean\s*;\s*var\s+squared\s*=\s*Math\.pow\(\s*difference\s*,\s*2\s*\);\s*return\s+acc\s*\+\s*squared\s*;/);
 ```
 
 You should not remove the initial value of `0` from your `.reduce()` method.
 
 ```js
-assert.match(getVariance.toString(), /variance\s*=\s*array\.reduce\(function\s*\(?\s*acc\s*,\s*el\s*\)?\s*\{\s*var\s*difference\s*=\s*el\s*-\s*mean\s*;\s*var\s*squared\s*=\s*Math\.pow\(\s*difference\s*,\s*2\s*\);\s*return\s+acc\s*\+\s*squared\s*;\s*\}\s*,\s*0\)/);
+assert.match(getVariance.toString(), /variance\s*=\s*array\.reduce\(function\s*\(?\s*acc\s*,\s*el\s*\)?\s*\{\s*var\s+difference\s*=\s*el\s*-\s*mean\s*;\s*var\s+squared\s*=\s*Math\.pow\(\s*difference\s*,\s*2\s*\);\s*return\s+acc\s*\+\s*squared\s*;\s*\}\s*,\s*0\)/);
 ```
 
 # --seed--
@@ -179,7 +179,7 @@ const calculate = () => {
   const value = document.querySelector("#numbers").value;
   const array = value.split(/,\s*/g);
   const numbers = array.map(el => Number(el)).filter(el => !isNaN(el));
-  
+
   const mean = getMean(numbers);
   const median = getMedian(numbers);
   const mode = getMode(numbers);
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-advanced-array-methods-by-building-a-statistics-calculator/6352fed209792d2b89e92ea1.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-advanced-array-methods-by-building-a-statistics-calculator/6352fed209792d2b89e92ea1.md
index 5d8039b9f6a..117861dc74e 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-advanced-array-methods-by-building-a-statistics-calculator/6352fed209792d2b89e92ea1.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-advanced-array-methods-by-building-a-statistics-calculator/6352fed209792d2b89e92ea1.md
@@ -16,7 +16,7 @@ Divide your `.reduce()` call by the length of the array (in your `variance` decl
 You should divide the result of the `.reduce()` call by the length of the array.
 
 ```js
-assert.match(getVariance.toString(), /variance\s*=\s*array\.reduce\(function\s*\(?\s*acc\s*,\s*el\s*\)?\s*\{\s*var\s*difference\s*=\s*el\s*-\s*mean\s*;\s*var\s*squared\s*=\s*Math\.pow\(\s*difference\s*,\s*2\s*\);\s*return\s+acc\s*\+\s*squared\s*;\s*\}\s*,\s*0\)\s*\/\s*array\.length;/);
+assert.match(getVariance.toString(), /variance\s*=\s*array\.reduce\(function\s*\(?\s*acc\s*,\s*el\s*\)?\s*\{\s*var\s+difference\s*=\s*el\s*-\s*mean\s*;\s*var\s+squared\s*=\s*Math\.pow\(\s*difference\s*,\s*2\s*\);\s*return\s+acc\s*\+\s*squared\s*;\s*\}\s*,\s*0\)\s*\/\s*array\.length;/);
 ```
 
 You should return the value of `variance`.
@@ -159,7 +159,7 @@ const calculate = () => {
   const value = document.querySelector("#numbers").value;
   const array = value.split(/,\s*/g);
   const numbers = array.map(el => Number(el)).filter(el => !isNaN(el));
-  
+
   const mean = getMean(numbers);
   const median = getMedian(numbers);
   const mode = getMode(numbers);
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-asynchronous-programming-by-building-an-fcc-forum-leaderboard/64388945b59341057e955fbb.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-asynchronous-programming-by-building-an-fcc-forum-leaderboard/64388945b59341057e955fbb.md
index b392f5c89e0..99db067f68d 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-asynchronous-programming-by-building-an-fcc-forum-leaderboard/64388945b59341057e955fbb.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-asynchronous-programming-by-building-an-fcc-forum-leaderboard/64388945b59341057e955fbb.md
@@ -24,7 +24,7 @@ Use the `async` keyword to create an asynchronous arrow function called `fetchDa
 You should use the `async` keyword to create an asynchronous arrow function called `fetchData`.
 
 ```js
-assert.match(code, /const\s*fetchData\s*=\s*async\s*\(\)\s*=>\s*{\s*[^}]*\s*}/);
+assert.match(code, /const\s+fetchData\s*=\s*async\s*\(\)\s*=>\s*{\s*[^}]*\s*}/);
 ```
 
 `fetchData` should be defined.
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-asynchronous-programming-by-building-an-fcc-forum-leaderboard/643c0ab6779047014ca69b4f.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-asynchronous-programming-by-building-an-fcc-forum-leaderboard/643c0ab6779047014ca69b4f.md
index 88eb3bff7e4..4994bfbe6bc 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-asynchronous-programming-by-building-an-fcc-forum-leaderboard/643c0ab6779047014ca69b4f.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-asynchronous-programming-by-building-an-fcc-forum-leaderboard/643c0ab6779047014ca69b4f.md
@@ -18,26 +18,26 @@ const example = async () => {
 }
 ```
 
-Inside the `try` block, create a constant called `res` and assign it `await fetch()`. For the `fetch` call, pass in the `forumLatest` variable. 
+Inside the `try` block, create a constant called `res` and assign it `await fetch()`. For the `fetch` call, pass in the `forumLatest` variable.
 
 # --hints--
 
 You should have a constant called `res` inside your `try` block.
 
 ```js
-assert.match(code, /\s*const\s*res/)
+assert.match(code, /\s*const\s+res/)
 ```
 
 You should assign `await fetch()` to your `res` variable.
 
 ```js
-assert.match(code, /\s*const\s*res\s*=\s*await\s+fetch\(\s*(.*)\s*\)/);
+assert.match(code, /\s*const\s+res\s*=\s*await\s+fetch\(\s*(.*)\s*\)/);
 ```
 
 You should pass in the `forumLatest` constant to the `fetch` call.
 
 ```js
-assert.match(code, /const\s*fetchData\s*=\s*async\s*\(\)\s*=>\s*{\s*try\s*{\s*const\s*res\s*=\s*await\s+fetch\(\s*forumLatest\s*\)\s*;?\s*}\s*catch\s*\(\s*err\s*\)\s*{\s*}\s*}/);
+assert.match(code, /const\s+fetchData\s*=\s*async\s*\(\)\s*=>\s*{\s*try\s*{\s*const\s+res\s*=\s*await\s+fetch\(\s*forumLatest\s*\)\s*;?\s*}\s*catch\s*\(\s*err\s*\)\s*{\s*}\s*}/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-asynchronous-programming-by-building-an-fcc-forum-leaderboard/643c14c8027369027334e802.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-asynchronous-programming-by-building-an-fcc-forum-leaderboard/643c14c8027369027334e802.md
index e30aaf6e781..39e052aafbb 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-asynchronous-programming-by-building-an-fcc-forum-leaderboard/643c14c8027369027334e802.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-asynchronous-programming-by-building-an-fcc-forum-leaderboard/643c14c8027369027334e802.md
@@ -16,13 +16,13 @@ Create a constant called `data` and assign it the value of `await res.json()`.
 You should have a `const` variable named `data`.
 
 ```js
-assert.match(code, /const\s*data/);
+assert.match(code, /const\s+data/);
 ```
 
 You should assign `await res.json()` to the `data` variable.
 
 ```js
-assert.match(code, /\s*const\s*data\s*=\s*await\s+res\.json\(\);?\s*/);
+assert.match(code, /\s*const\s+data\s*=\s*await\s+res\.json\(\);?\s*/);
 ```
 
 # --seed--
@@ -241,9 +241,9 @@ const postsContainer = document.getElementById("posts-container");
 const fetchData = async () => {
   try {
     const res = await fetch(forumLatest);
-    
+
   } catch (err) {
-    
+
   }
 };
 --fcc-editable-region--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-asynchronous-programming-by-building-an-fcc-forum-leaderboard/643ee973c162ae017b3d30db.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-asynchronous-programming-by-building-an-fcc-forum-leaderboard/643ee973c162ae017b3d30db.md
index 758d0211b1a..55f736c03c9 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-asynchronous-programming-by-building-an-fcc-forum-leaderboard/643ee973c162ae017b3d30db.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-asynchronous-programming-by-building-an-fcc-forum-leaderboard/643ee973c162ae017b3d30db.md
@@ -16,7 +16,7 @@ Create a new arrow function called `timeAgo` with a parameter called `time`.
 You should have an arrow function named `timeAgo`.
 
 ```js
-assert.match(code, /\s*const\s*timeAgo\s*=\s*\(?\s*.*\)?\s*=>/);
+assert.match(code, /\s*const\s+timeAgo\s*=\s*\(?\s*.*\)?\s*=>/);
 ```
 
 `timeAgo` should be defined.
@@ -34,7 +34,7 @@ assert.isFunction(timeAgo);
 `timeAgo` should be an empty function.
 
 ```js
-assert.match(code, /\s*const\s*timeAgo\s*=\s*\(?\s*.*\)?\s*=>\s*{\s*}/);
+assert.match(code, /\s*const\s+timeAgo\s*=\s*\(?\s*.*\)?\s*=>\s*{\s*}/);
 ```
 
 You should have a `time` parameter for the `timeAgo` function.
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-asynchronous-programming-by-building-an-fcc-forum-leaderboard/64440a50d076c204051f2cc0.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-asynchronous-programming-by-building-an-fcc-forum-leaderboard/64440a50d076c204051f2cc0.md
index 4ae1ebdbf95..b55f82329eb 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-asynchronous-programming-by-building-an-fcc-forum-leaderboard/64440a50d076c204051f2cc0.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-asynchronous-programming-by-building-an-fcc-forum-leaderboard/64440a50d076c204051f2cc0.md
@@ -7,7 +7,7 @@ dashedName: step-34
 
 # --description--
 
-You need a function to convert view counts to a more readable format. For example, if the view count is `1000`, it should display as `1k` and if the view count is `100,000` it should display as `100k`. 
+You need a function to convert view counts to a more readable format. For example, if the view count is `1000`, it should display as `1k` and if the view count is `100,000` it should display as `100k`.
 
 Create an arrow function called `viewCount` with a parameter called `views`.
 
@@ -34,7 +34,7 @@ assert.isFunction(viewCount);
 `viewCount` should be an empty function.
 
 ```js
-assert.match(code, /\s*const\s*viewCount\s*=\s*(\([^)]*\)|[^\s()]+)\s*=>\s*{\s*}\s*/);
+assert.match(code, /\s*const\s+viewCount\s*=\s*(\([^)]*\)|[^\s()]+)\s*=>\s*{\s*}\s*/);
 ```
 
 You should have a parameter called `views` for your `viewCount` function.
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-asynchronous-programming-by-building-an-fcc-forum-leaderboard/6444ec416a1fe1017e517bd8.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-asynchronous-programming-by-building-an-fcc-forum-leaderboard/6444ec416a1fe1017e517bd8.md
index 520416669bd..cf752880e2e 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-asynchronous-programming-by-building-an-fcc-forum-leaderboard/6444ec416a1fe1017e517bd8.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-asynchronous-programming-by-building-an-fcc-forum-leaderboard/6444ec416a1fe1017e517bd8.md
@@ -14,13 +14,13 @@ Create a constant named `thousands` and assign `Math.floor(views / 1000)` to it.
 You should have a constant called `thousands`.
 
 ```js
-assert.match(code, /\s*const\s*thousands\s*=/);
+assert.match(code, /\s*const\s+thousands\s*=/);
 ```
 
 Your should assign `Math.floor(views / 1000)` to your `thousands` variable.
 
 ```js
-assert.match(code, /\s*const\s*thousands\s*=\s*Math.floor\(views\s*\/\s*1000\)\s*/);
+assert.match(code, /\s*const\s+thousands\s*=\s*Math.floor\(views\s*\/\s*1000\)\s*/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-asynchronous-programming-by-building-an-fcc-forum-leaderboard/6446d8f9fce0fa0172473964.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-asynchronous-programming-by-building-an-fcc-forum-leaderboard/6446d8f9fce0fa0172473964.md
index fdc807d3e52..8031ce823e2 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-asynchronous-programming-by-building-an-fcc-forum-leaderboard/6446d8f9fce0fa0172473964.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-asynchronous-programming-by-building-an-fcc-forum-leaderboard/6446d8f9fce0fa0172473964.md
@@ -9,7 +9,7 @@ dashedName: step-43
 
 The rest of the `allCategories` object has been completed for you.
 
-In the next few steps, you will create a function to retrieve the category name from the `allCategories` object. 
+In the next few steps, you will create a function to retrieve the category name from the `allCategories` object.
 
 Start by creating an arrow function named `forumCategory`, with `id` as the parameter name.
 
@@ -18,7 +18,7 @@ Start by creating an arrow function named `forumCategory`, with `id` as the para
 You need to create an empty function named `forumCategory`.
 
 ```js
-assert.match(code, /\s*const\s*forumCategory\s*=\s*(\([^)]*\)|[^\s()]+)\s*=>\s*{\s*}\s*/);
+assert.match(code, /\s*const\s+forumCategory\s*=\s*(\([^)]*\)|[^\s()]+)\s*=>\s*{\s*}\s*/);
 ```
 
 You should have a parameter named `id` in the `forumCategory` function.
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-asynchronous-programming-by-building-an-fcc-forum-leaderboard/644b6d20eabd7e0149383254.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-asynchronous-programming-by-building-an-fcc-forum-leaderboard/644b6d20eabd7e0149383254.md
index 52d2bb99d4f..cec10962706 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-asynchronous-programming-by-building-an-fcc-forum-leaderboard/644b6d20eabd7e0149383254.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-asynchronous-programming-by-building-an-fcc-forum-leaderboard/644b6d20eabd7e0149383254.md
@@ -14,13 +14,13 @@ Inside your `forumCategory` function, create a new `let` variable named `selecte
 You should use `let` to declare a variable named `selectedCategory`. 
 
 ```js
-assert.match(code, /\s*let\s*selectedCategory\s*/);
+assert.match(code, /\s*let\s+selectedCategory\s*/);
 ```
 
 Your should assign an empty object to the `selectedCategory` variable.
 
 ```js
-assert.match(code, /\s*let\s*selectedCategory\s*=\s*{\s*}\s*/);
+assert.match(code, /\s*let\s+selectedCategory\s*=\s*{\s*}\s*/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-asynchronous-programming-by-building-an-fcc-forum-leaderboard/645f06144bc0dc0143a5a3a2.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-asynchronous-programming-by-building-an-fcc-forum-leaderboard/645f06144bc0dc0143a5a3a2.md
index 2aa12f5a133..d1f384b3007 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-asynchronous-programming-by-building-an-fcc-forum-leaderboard/645f06144bc0dc0143a5a3a2.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-asynchronous-programming-by-building-an-fcc-forum-leaderboard/645f06144bc0dc0143a5a3a2.md
@@ -16,13 +16,13 @@ Start by creating an arrow function called `avatars`, with two parameters called
 You should have an empty arrow function called `avatars`.
 
 ```js
-assert.match(code, /const\s*avatars\s*=\s*\([\s\S]*\)\s*=>\s*{\s*}/);
+assert.match(code, /const\s+avatars\s*=\s*\([\s\S]*\)\s*=>\s*{\s*}/);
 ```
 
 You should have the parameters named `posters` and `users` in the function named `avatars`.
 
 ```js
-assert.match(code, /const\s*avatars\s*=\s*\(\s*(posters|users)\s*,\s*(posters|users)\s*\)\s*=>\s*{\s*}/);
+assert.match(code, /const\s+avatars\s*=\s*\(\s*(posters|users)\s*,\s*(posters|users)\s*\)\s*=>\s*{\s*}/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-asynchronous-programming-by-building-an-fcc-forum-leaderboard/653f173100e7791a72a8a4c8.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-asynchronous-programming-by-building-an-fcc-forum-leaderboard/653f173100e7791a72a8a4c8.md
index 913ef1cdf53..041dd6eb52c 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-asynchronous-programming-by-building-an-fcc-forum-leaderboard/653f173100e7791a72a8a4c8.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-asynchronous-programming-by-building-an-fcc-forum-leaderboard/653f173100e7791a72a8a4c8.md
@@ -27,19 +27,19 @@ Inside your `fetchData` function, add a `try...catch` statement. The `catch` blo
 You should have a `try` block inside your `fetchData` function.
 
 ```js
-assert.match(code, /const\s*fetchData\s*=\s*async\s*\(\)\s*=>\s*{\s*try\s*{[^}]*\s*}/);
+assert.match(code, /const\s+fetchData\s*=\s*async\s*\(\)\s*=>\s*{\s*try\s*{[^}]*\s*}/);
 ```
 
 You should have a `catch` block after your `try` block.
 
 ```js
-assert.match(code, /const\s*fetchData\s*=\s*async\s*\(\)\s*=>\s*{\s*try\s*{[^}]*\s*}\s*catch\s*\(.*\)\s*{[^}]*\s*}/);
+assert.match(code, /const\s+fetchData\s*=\s*async\s*\(\)\s*=>\s*{\s*try\s*{[^}]*\s*}\s*catch\s*\(.*\)\s*{[^}]*\s*}/);
 ```
 
 Your `catch` block should have an `err` parameter.
 
 ```js
-assert.match(code, /const\s*fetchData\s*=\s*async\s*\(\)\s*=>\s*{\s*try\s*{[^}]*\s*}\s*catch\s*\(\s*err\s*\)\s*{[^}]*\s*}/);
+assert.match(code, /const\s+fetchData\s*=\s*async\s*\(\)\s*=>\s*{\s*try\s*{[^}]*\s*}\s*catch\s*\(\s*err\s*\)\s*{[^}]*\s*}/);
 ```
 
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-algorithmic-thinking-by-building-a-number-sorter/6407c627ddc93708c8dee796.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-algorithmic-thinking-by-building-a-number-sorter/6407c627ddc93708c8dee796.md
index 5c428de740e..f7a30bf266a 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-algorithmic-thinking-by-building-a-number-sorter/6407c627ddc93708c8dee796.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-algorithmic-thinking-by-building-a-number-sorter/6407c627ddc93708c8dee796.md
@@ -14,19 +14,19 @@ Create a variable named `outputValueNode` and set its value to the result of cal
 Use `const` to declare an `outputValueNode` variable in your `.forEach()` callback.
 
 ```js
-assert.match(code, /array\.forEach\s*\(\s*\(\s*num\s*,\s*i\s*\)\s*=>\s*\{\s*const\s*outputValueNode\s*=/)
+assert.match(code, /array\.forEach\s*\(\s*\(\s*num\s*,\s*i\s*\)\s*=>\s*\{\s*const\s+outputValueNode\s*=/)
 ```
 
 `outputValueNode` should be assigned the value of calling `document.getElementById()`.
 
 ```js
-assert.match(code, /array\.forEach\s*\(\s*\(\s*num\s*,\s*i\s*\)\s*=>\s*\{\s*const\s*outputValueNode\s*=\s*document\.getElementById\s*\(/)
+assert.match(code, /array\.forEach\s*\(\s*\(\s*num\s*,\s*i\s*\)\s*=>\s*\{\s*const\s+outputValueNode\s*=\s*document\.getElementById\s*\(/)
 ```
 
 Use template literal syntax to pass in the `output-value-${i}` string to `.getElementById()`.
 
 ```js
-assert.match(code, /array\.forEach\s*\(\s*\(\s*num\s*,\s*i\s*\)\s*=>\s*\{\s*const\s*outputValueNode\s*=\s*document\.getElementById\s*\(\s*`output-value-\$\{i\}`\s*\)/)
+assert.match(code, /array\.forEach\s*\(\s*\(\s*num\s*,\s*i\s*\)\s*=>\s*\{\s*const\s+outputValueNode\s*=\s*document\.getElementById\s*\(\s*`output-value-\$\{i\}`\s*\)/)
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-algorithmic-thinking-by-building-a-number-sorter/6407c6a2c2159309994779a5.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-algorithmic-thinking-by-building-a-number-sorter/6407c6a2c2159309994779a5.md
index 4d6dd47de6f..22a9c68edfb 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-algorithmic-thinking-by-building-a-number-sorter/6407c6a2c2159309994779a5.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-algorithmic-thinking-by-building-a-number-sorter/6407c6a2c2159309994779a5.md
@@ -14,13 +14,13 @@ Set the `innerText` property of `outputValueNode` to `num`.
 You should use `innerText` to set the text of `outputValueNode`.
 
 ```js
-assert.match(code, /array\.forEach\s*\(\s*\(\s*num\s*,\s*i\s*\)\s*=>\s*\{\s*const\s*outputValueNode\s*=\s*document\.getElementById\s*\(\s*`output-value-\$\{i\}`\s*\)\s*;?\s*outputValueNode\.innerText/)
+assert.match(code, /array\.forEach\s*\(\s*\(\s*num\s*,\s*i\s*\)\s*=>\s*\{\s*const\s+outputValueNode\s*=\s*document\.getElementById\s*\(\s*`output-value-\$\{i\}`\s*\)\s*;?\s*outputValueNode\.innerText/)
 ```
 
 You should use `innerText` to set the text of `outputValueNode` to `num`.
 
 ```js
-assert.match(code, /array\.forEach\s*\(\s*\(\s*num\s*,\s*i\s*\)\s*=>\s*\{\s*const\s*outputValueNode\s*=\s*document\.getElementById\s*\(\s*`output-value-\$\{i\}`\s*\)\s*;?\s*outputValueNode\.innerText\s*=\s*num;?/)
+assert.match(code, /array\.forEach\s*\(\s*\(\s*num\s*,\s*i\s*\)\s*=>\s*\{\s*const\s+outputValueNode\s*=\s*document\.getElementById\s*\(\s*`output-value-\$\{i\}`\s*\)\s*;?\s*outputValueNode\.innerText\s*=\s*num;?/)
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-algorithmic-thinking-by-building-a-number-sorter/6410edb33eeaf50dd9a22ab4.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-algorithmic-thinking-by-building-a-number-sorter/6410edb33eeaf50dd9a22ab4.md
index c815a5da5a7..b9fac73101c 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-algorithmic-thinking-by-building-a-number-sorter/6410edb33eeaf50dd9a22ab4.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-algorithmic-thinking-by-building-a-number-sorter/6410edb33eeaf50dd9a22ab4.md
@@ -16,25 +16,25 @@ To do this, declare a `temp` variable and assign it the value of `array[j]`. The
 Within your `if` statement, you should declare a `temp` variable.
 
 ```js
-assert.match(code, /const\s+bubbleSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*0\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*for\s*\(\s*let\s+j\s*=\s*0\s*;\s*j\s*<\s*array\.length\s*-\s*1\s*;\s*j\s*\+\+\s*\)\s*{\s*console\.log\s*\(\s*array\s*,\s*array\s*\[\s*j\s*\]\s*,\s*array\s*\[\s*j\s*\+\s*1\s*\]\s*\);?\s*if\s*\(\s*array\s*\[\s*j\s*\]\s*>\s*array\s*\[\s*j\s*\+\s*1\s*\]\s*\)\s*{\s*const\s*temp\s*=/);
+assert.match(code, /const\s+bubbleSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*0\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*for\s*\(\s*let\s+j\s*=\s*0\s*;\s*j\s*<\s*array\.length\s*-\s*1\s*;\s*j\s*\+\+\s*\)\s*{\s*console\.log\s*\(\s*array\s*,\s*array\s*\[\s*j\s*\]\s*,\s*array\s*\[\s*j\s*\+\s*1\s*\]\s*\);?\s*if\s*\(\s*array\s*\[\s*j\s*\]\s*>\s*array\s*\[\s*j\s*\+\s*1\s*\]\s*\)\s*{\s*const\s+temp\s*=/);
 ```
 
 You should assign `temp` the value of `array[j]`.
 
 ```js
-assert.match(code, /const\s+bubbleSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*0\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*for\s*\(\s*let\s+j\s*=\s*0\s*;\s*j\s*<\s*array\.length\s*-\s*1\s*;\s*j\s*\+\+\s*\)\s*{\s*console\.log\s*\(\s*array\s*,\s*array\s*\[\s*j\s*\]\s*,\s*array\s*\[\s*j\s*\+\s*1\s*\]\s*\);?\s*if\s*\(\s*array\s*\[\s*j\s*\]\s*>\s*array\s*\[\s*j\s*\+\s*1\s*\]\s*\)\s*{\s*const\s*temp\s*=\s*array\s*\[\s*j\s*\];?/);
+assert.match(code, /const\s+bubbleSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*0\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*for\s*\(\s*let\s+j\s*=\s*0\s*;\s*j\s*<\s*array\.length\s*-\s*1\s*;\s*j\s*\+\+\s*\)\s*{\s*console\.log\s*\(\s*array\s*,\s*array\s*\[\s*j\s*\]\s*,\s*array\s*\[\s*j\s*\+\s*1\s*\]\s*\);?\s*if\s*\(\s*array\s*\[\s*j\s*\]\s*>\s*array\s*\[\s*j\s*\+\s*1\s*\]\s*\)\s*{\s*const\s+temp\s*=\s*array\s*\[\s*j\s*\];?/);
 ```
 
 You should assign `array[j]` the value of `array[j + 1]`.
 
 ```js
-assert.match(code, /const\s+bubbleSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*0\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*for\s*\(\s*let\s+j\s*=\s*0\s*;\s*j\s*<\s*array\.length\s*-\s*1\s*;\s*j\s*\+\+\s*\)\s*{\s*console\.log\s*\(\s*array\s*,\s*array\s*\[\s*j\s*\]\s*,\s*array\s*\[\s*j\s*\+\s*1\s*\]\s*\);?\s*if\s*\(\s*array\s*\[\s*j\s*\]\s*>\s*array\s*\[\s*j\s*\+\s*1\s*\]\s*\)\s*{\s*const\s*temp\s*=\s*array\s*\[\s*j\s*\];?\s*array\s*\[\s*j\s*\]\s*=\s*array\s*\[\s*j\s*\+\s*1\s*\];?/);
+assert.match(code, /const\s+bubbleSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*0\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*for\s*\(\s*let\s+j\s*=\s*0\s*;\s*j\s*<\s*array\.length\s*-\s*1\s*;\s*j\s*\+\+\s*\)\s*{\s*console\.log\s*\(\s*array\s*,\s*array\s*\[\s*j\s*\]\s*,\s*array\s*\[\s*j\s*\+\s*1\s*\]\s*\);?\s*if\s*\(\s*array\s*\[\s*j\s*\]\s*>\s*array\s*\[\s*j\s*\+\s*1\s*\]\s*\)\s*{\s*const\s+temp\s*=\s*array\s*\[\s*j\s*\];?\s*array\s*\[\s*j\s*\]\s*=\s*array\s*\[\s*j\s*\+\s*1\s*\];?/);
 ```
 
 You should assign `array[j + 1]` the value of `temp`.
 
 ```js
-assert.match(code, /const\s+bubbleSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*0\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*for\s*\(\s*let\s+j\s*=\s*0\s*;\s*j\s*<\s*array\.length\s*-\s*1\s*;\s*j\s*\+\+\s*\)\s*{\s*console\.log\s*\(\s*array\s*,\s*array\s*\[\s*j\s*\]\s*,\s*array\s*\[\s*j\s*\+\s*1\s*\]\s*\);?\s*if\s*\(\s*array\s*\[\s*j\s*\]\s*>\s*array\s*\[\s*j\s*\+\s*1\s*\]\s*\)\s*{\s*const\s*temp\s*=\s*array\s*\[\s*j\s*\];?\s*array\s*\[\s*j\s*\]\s*=\s*array\s*\[\s*j\s*\+\s*1\s*\];?\s*array\s*\[\s*j\s*\+\s*1\s*\]\s*=\s*temp\s*;?/);
+assert.match(code, /const\s+bubbleSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*0\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*for\s*\(\s*let\s+j\s*=\s*0\s*;\s*j\s*<\s*array\.length\s*-\s*1\s*;\s*j\s*\+\+\s*\)\s*{\s*console\.log\s*\(\s*array\s*,\s*array\s*\[\s*j\s*\]\s*,\s*array\s*\[\s*j\s*\+\s*1\s*\]\s*\);?\s*if\s*\(\s*array\s*\[\s*j\s*\]\s*>\s*array\s*\[\s*j\s*\+\s*1\s*\]\s*\)\s*{\s*const\s+temp\s*=\s*array\s*\[\s*j\s*\];?\s*array\s*\[\s*j\s*\]\s*=\s*array\s*\[\s*j\s*\+\s*1\s*\];?\s*array\s*\[\s*j\s*\+\s*1\s*\]\s*=\s*temp\s*;?/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-algorithmic-thinking-by-building-a-number-sorter/6410efff0ae97c0f06856511.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-algorithmic-thinking-by-building-a-number-sorter/6410efff0ae97c0f06856511.md
index eea8f2d2a22..f61a8dd398a 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-algorithmic-thinking-by-building-a-number-sorter/6410efff0ae97c0f06856511.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-algorithmic-thinking-by-building-a-number-sorter/6410efff0ae97c0f06856511.md
@@ -14,7 +14,7 @@ Finally, after your outer loop has finished executing, return the sorted array.
 You should `return` the `array` variable.
 
 ```js
-assert.match(code, /const\s+bubbleSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*0\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*for\s*\(\s*let\s+j\s*=\s*0\s*;\s*j\s*<\s*array\.length\s*-\s*1\s*;\s*j\s*\+\+\s*\)\s*{\s*console\.log\s*\(\s*array\s*,\s*array\s*\[\s*j\s*\]\s*,\s*array\s*\[\s*j\s*\+\s*1\s*\]\s*\);?\s*if\s*\(\s*array\s*\[\s*j\s*\]\s*>\s*array\s*\[\s*j\s*\+\s*1\s*\]\s*\)\s*{\s*const\s*temp\s*=\s*array\s*\[\s*j\s*\];?\s*array\s*\[\s*j\s*\]\s*=\s*array\s*\[\s*j\s*\+\s*1\s*\];?\s*array\s*\[\s*j\s*\+\s*1\s*\]\s*=\s*temp\s*;?\s*}\s*}\s*}\s*return\s+array;?\s*}/);
+assert.match(code, /const\s+bubbleSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*0\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*for\s*\(\s*let\s+j\s*=\s*0\s*;\s*j\s*<\s*array\.length\s*-\s*1\s*;\s*j\s*\+\+\s*\)\s*{\s*console\.log\s*\(\s*array\s*,\s*array\s*\[\s*j\s*\]\s*,\s*array\s*\[\s*j\s*\+\s*1\s*\]\s*\);?\s*if\s*\(\s*array\s*\[\s*j\s*\]\s*>\s*array\s*\[\s*j\s*\+\s*1\s*\]\s*\)\s*{\s*const\s+temp\s*=\s*array\s*\[\s*j\s*\];?\s*array\s*\[\s*j\s*\]\s*=\s*array\s*\[\s*j\s*\+\s*1\s*\];?\s*array\s*\[\s*j\s*\+\s*1\s*\]\s*=\s*temp\s*;?\s*}\s*}\s*}\s*return\s+array;?\s*}/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-algorithmic-thinking-by-building-a-number-sorter/6410fb3b68429716a810ea4b.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-algorithmic-thinking-by-building-a-number-sorter/6410fb3b68429716a810ea4b.md
index dc6efb07012..95270db2dce 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-algorithmic-thinking-by-building-a-number-sorter/6410fb3b68429716a810ea4b.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-algorithmic-thinking-by-building-a-number-sorter/6410fb3b68429716a810ea4b.md
@@ -16,37 +16,37 @@ Then, write another `for` loop, using `j` as the iterator. This loop needs to st
 You should use `let` to declare `minIndex`.
 
 ```js
-assert.match(code, /const\s+selectionSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*0\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*let\s*minIndex\s*=/)
+assert.match(code, /const\s+selectionSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*0\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*let\s+minIndex\s*=/)
 ```
 
 You should set `minIndex` to `i`.
 
 ```js
-assert.match(code, /const\s+selectionSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*0\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*let\s*minIndex\s*=\s*i\s*;?/)
+assert.match(code, /const\s+selectionSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*0\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*let\s+minIndex\s*=\s*i\s*;?/)
 ```
 
 You should have a nested `for` loop.
 
 ```js
-assert.match(code, /const\s+selectionSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*0\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*let\s*minIndex\s*=\s*i\s*;?\s*for\s*\(/)
+assert.match(code, /const\s+selectionSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*0\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*let\s+minIndex\s*=\s*i\s*;?\s*for\s*\(/)
 ```
 
 Your `for` loop should initialize `j` to `i + 1`.
 
 ```js
-assert.match(code, /const\s+selectionSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*0\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*let\s*minIndex\s*=\s*i\s*;?\s*for\s*\(\s*let\s+j\s*=\s*i\s*\+\s*1\s*;/);
+assert.match(code, /const\s+selectionSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*0\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*let\s+minIndex\s*=\s*i\s*;?\s*for\s*\(\s*let\s+j\s*=\s*i\s*\+\s*1\s*;/);
 ```
 
 Your `for` loop should iterate through the rest of the array.
 
 ```js
-assert.match(code, /const\s+selectionSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*0\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*let\s*minIndex\s*=\s*i\s*;?\s*for\s*\(\s*let\s+j\s*=\s*i\s*\+\s*1\s*;\s*j\s*<\s*array\.length\s*;/);
+assert.match(code, /const\s+selectionSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*0\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*let\s+minIndex\s*=\s*i\s*;?\s*for\s*\(\s*let\s+j\s*=\s*i\s*\+\s*1\s*;\s*j\s*<\s*array\.length\s*;/);
 ```
 
 Your `for` loop should increment `j`.
 
 ```js
-assert.match(code, /const\s+selectionSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*0\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*let\s*minIndex\s*=\s*i\s*;?\s*for\s*\(\s*let\s+j\s*=\s*i\s*\+\s*1\s*;\s*j\s*<\s*array\.length\s*;\s*j\s*\+\+\s*\)\s*{/);
+assert.match(code, /const\s+selectionSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*0\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*let\s+minIndex\s*=\s*i\s*;?\s*for\s*\(\s*let\s+j\s*=\s*i\s*\+\s*1\s*;\s*j\s*<\s*array\.length\s*;\s*j\s*\+\+\s*\)\s*{/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-algorithmic-thinking-by-building-a-number-sorter/6410fcd1f731fd17cdb101a7.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-algorithmic-thinking-by-building-a-number-sorter/6410fcd1f731fd17cdb101a7.md
index c638518f581..f09d9d55e6a 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-algorithmic-thinking-by-building-a-number-sorter/6410fcd1f731fd17cdb101a7.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-algorithmic-thinking-by-building-a-number-sorter/6410fcd1f731fd17cdb101a7.md
@@ -16,43 +16,43 @@ Then write an `if` statement that checks if the value at `j` is smaller than the
 You should have a `console.log()` call inside your nested `for` loop.
 
 ```js
-assert.match(code, /const\s+selectionSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*0\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*let\s*minIndex\s*=\s*i\s*;?\s*for\s*\(\s*let\s+j\s*=\s*i\s*\+\s*1\s*;\s*j\s*<\s*array\.length\s*;\s*j\s*\+\+\s*\)\s*{\s*console\.log\(/);
+assert.match(code, /const\s+selectionSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*0\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*let\s+minIndex\s*=\s*i\s*;?\s*for\s*\(\s*let\s+j\s*=\s*i\s*\+\s*1\s*;\s*j\s*<\s*array\.length\s*;\s*j\s*\+\+\s*\)\s*{\s*console\.log\(/);
 ```
 
 You should pass `array` as the first argument to `console.log()`.
 
 ```js
-assert.match(code, /const\s+selectionSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*0\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*let\s*minIndex\s*=\s*i\s*;?\s*for\s*\(\s*let\s+j\s*=\s*i\s*\+\s*1\s*;\s*j\s*<\s*array\.length\s*;\s*j\s*\+\+\s*\)\s*{\s*console\.log\(\s*array\s*,/);
+assert.match(code, /const\s+selectionSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*0\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*let\s+minIndex\s*=\s*i\s*;?\s*for\s*\(\s*let\s+j\s*=\s*i\s*\+\s*1\s*;\s*j\s*<\s*array\.length\s*;\s*j\s*\+\+\s*\)\s*{\s*console\.log\(\s*array\s*,/);
 ```
 
 You should pass `array[j]` as the second argument to `console.log()`.
 
 ```js
-assert.match(code, /const\s+selectionSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*0\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*let\s*minIndex\s*=\s*i\s*;?\s*for\s*\(\s*let\s+j\s*=\s*i\s*\+\s*1\s*;\s*j\s*<\s*array\.length\s*;\s*j\s*\+\+\s*\)\s*{\s*console\.log\(\s*array\s*,\s*array\s*\[\s*j\s*\]\s*,/);
+assert.match(code, /const\s+selectionSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*0\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*let\s+minIndex\s*=\s*i\s*;?\s*for\s*\(\s*let\s+j\s*=\s*i\s*\+\s*1\s*;\s*j\s*<\s*array\.length\s*;\s*j\s*\+\+\s*\)\s*{\s*console\.log\(\s*array\s*,\s*array\s*\[\s*j\s*\]\s*,/);
 ```
 
 You should pass `array[minIndex]` as the third argument to `console.log()`.
 
 ```js
-assert.match(code, /const\s+selectionSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*0\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*let\s*minIndex\s*=\s*i\s*;?\s*for\s*\(\s*let\s+j\s*=\s*i\s*\+\s*1\s*;\s*j\s*<\s*array\.length\s*;\s*j\s*\+\+\s*\)\s*{\s*console\.log\(\s*array\s*,\s*array\s*\[\s*j\s*\]\s*,\s*array\s*\[\s*minIndex\s*\]\s*\);?/);
+assert.match(code, /const\s+selectionSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*0\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*let\s+minIndex\s*=\s*i\s*;?\s*for\s*\(\s*let\s+j\s*=\s*i\s*\+\s*1\s*;\s*j\s*<\s*array\.length\s*;\s*j\s*\+\+\s*\)\s*{\s*console\.log\(\s*array\s*,\s*array\s*\[\s*j\s*\]\s*,\s*array\s*\[\s*minIndex\s*\]\s*\);?/);
 ```
 
 You should have an `if` statement after your `console.log()` call.
 
 ```js
-assert.match(code, /const\s+selectionSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*0\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*let\s*minIndex\s*=\s*i\s*;?\s*for\s*\(\s*let\s+j\s*=\s*i\s*\+\s*1\s*;\s*j\s*<\s*array\.length\s*;\s*j\s*\+\+\s*\)\s*{\s*console\.log\(\s*array\s*,\s*array\s*\[\s*j\s*\]\s*,\s*array\s*\[\s*minIndex\s*\]\s*\);?\s*if\s*\(?/);
+assert.match(code, /const\s+selectionSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*0\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*let\s+minIndex\s*=\s*i\s*;?\s*for\s*\(\s*let\s+j\s*=\s*i\s*\+\s*1\s*;\s*j\s*<\s*array\.length\s*;\s*j\s*\+\+\s*\)\s*{\s*console\.log\(\s*array\s*,\s*array\s*\[\s*j\s*\]\s*,\s*array\s*\[\s*minIndex\s*\]\s*\);?\s*if\s*\(?/);
 ```
 
 You should have a condition in your `if` statement that checks if `array[j]` is less than `array[minIndex]`.
 
 ```js
-assert.match(code, /const\s+selectionSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*0\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*let\s*minIndex\s*=\s*i\s*;?\s*for\s*\(\s*let\s+j\s*=\s*i\s*\+\s*1\s*;\s*j\s*<\s*array\.length\s*;\s*j\s*\+\+\s*\)\s*{\s*console\.log\(\s*array\s*,\s*array\s*\[\s*j\s*\]\s*,\s*array\s*\[\s*minIndex\s*\]\s*\);?\s*if\s*\(\s*array\s*\[\s*j\s*\]\s*<\s*array\s*\[\s*minIndex\s*\]\s*\)\s*{?/);
+assert.match(code, /const\s+selectionSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*0\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*let\s+minIndex\s*=\s*i\s*;?\s*for\s*\(\s*let\s+j\s*=\s*i\s*\+\s*1\s*;\s*j\s*<\s*array\.length\s*;\s*j\s*\+\+\s*\)\s*{\s*console\.log\(\s*array\s*,\s*array\s*\[\s*j\s*\]\s*,\s*array\s*\[\s*minIndex\s*\]\s*\);?\s*if\s*\(\s*array\s*\[\s*j\s*\]\s*<\s*array\s*\[\s*minIndex\s*\]\s*\)\s*{?/);
 ```
 
 Your `if` statement should set `minIndex` to `j`.
 
 ```js
-assert.match(code, /const\s+selectionSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*0\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*let\s*minIndex\s*=\s*i\s*;?\s*for\s*\(\s*let\s+j\s*=\s*i\s*\+\s*1\s*;\s*j\s*<\s*array\.length\s*;\s*j\s*\+\+\s*\)\s*{\s*console\.log\(\s*array\s*,\s*array\s*\[\s*j\s*\]\s*,\s*array\s*\[\s*minIndex\s*\]\s*\);?\s*if\s*\(\s*array\s*\[\s*j\s*\]\s*<\s*array\s*\[\s*minIndex\s*\]\s*\)\s*{\s*minIndex\s*=\s*j\s*;?\s*}/);
+assert.match(code, /const\s+selectionSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*0\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*let\s+minIndex\s*=\s*i\s*;?\s*for\s*\(\s*let\s+j\s*=\s*i\s*\+\s*1\s*;\s*j\s*<\s*array\.length\s*;\s*j\s*\+\+\s*\)\s*{\s*console\.log\(\s*array\s*,\s*array\s*\[\s*j\s*\]\s*,\s*array\s*\[\s*minIndex\s*\]\s*\);?\s*if\s*\(\s*array\s*\[\s*j\s*\]\s*<\s*array\s*\[\s*minIndex\s*\]\s*\)\s*{\s*minIndex\s*=\s*j\s*;?\s*}/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-algorithmic-thinking-by-building-a-number-sorter/6411024727181d190ef03166.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-algorithmic-thinking-by-building-a-number-sorter/6411024727181d190ef03166.md
index 68f4ff3e10b..37c1aece78e 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-algorithmic-thinking-by-building-a-number-sorter/6411024727181d190ef03166.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-algorithmic-thinking-by-building-a-number-sorter/6411024727181d190ef03166.md
@@ -16,25 +16,25 @@ Like you did in your bubble sort, use a `temp` variable to extract the value at
 After your nested `for` loop, you should declare a `temp` variable.
 
 ```js
-assert.match(code, /const\s+selectionSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*0\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*let\s*minIndex\s*=\s*i\s*;?\s*for\s*\(\s*let\s+j\s*=\s*i\s*\+\s*1\s*;\s*j\s*<\s*array\.length\s*;\s*j\s*\+\+\s*\)\s*{\s*console\.log\(\s*array\s*,\s*array\s*\[\s*j\s*\]\s*,\s*array\s*\[\s*minIndex\s*\]\s*\);\s*if\s*\(\s*array\s*\[\s*j\s*\]\s*<\s*array\s*\[\s*minIndex\s*\]\s*\)\s*{\s*minIndex\s*=\s*j\s*;?\s*}\s*}\s*const\s*temp\s*=/);
+assert.match(code, /const\s+selectionSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*0\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*let\s+minIndex\s*=\s*i\s*;?\s*for\s*\(\s*let\s+j\s*=\s*i\s*\+\s*1\s*;\s*j\s*<\s*array\.length\s*;\s*j\s*\+\+\s*\)\s*{\s*console\.log\(\s*array\s*,\s*array\s*\[\s*j\s*\]\s*,\s*array\s*\[\s*minIndex\s*\]\s*\);\s*if\s*\(\s*array\s*\[\s*j\s*\]\s*<\s*array\s*\[\s*minIndex\s*\]\s*\)\s*{\s*minIndex\s*=\s*j\s*;?\s*}\s*}\s*const\s+temp\s*=/);
 ```
 
 You should assign `array[i]` to `temp`.
 
 ```js
-assert.match(code, /const\s+selectionSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*0\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*let\s*minIndex\s*=\s*i\s*;?\s*for\s*\(\s*let\s+j\s*=\s*i\s*\+\s*1\s*;\s*j\s*<\s*array\.length\s*;\s*j\s*\+\+\s*\)\s*{\s*console\.log\(\s*array\s*,\s*array\s*\[\s*j\s*\]\s*,\s*array\s*\[\s*minIndex\s*\]\s*\);\s*if\s*\(\s*array\s*\[\s*j\s*\]\s*<\s*array\s*\[\s*minIndex\s*\]\s*\)\s*{\s*minIndex\s*=\s*j\s*;?\s*}\s*}\s*const\s*temp\s*=\s*array\[i\]/)
+assert.match(code, /const\s+selectionSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*0\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*let\s+minIndex\s*=\s*i\s*;?\s*for\s*\(\s*let\s+j\s*=\s*i\s*\+\s*1\s*;\s*j\s*<\s*array\.length\s*;\s*j\s*\+\+\s*\)\s*{\s*console\.log\(\s*array\s*,\s*array\s*\[\s*j\s*\]\s*,\s*array\s*\[\s*minIndex\s*\]\s*\);\s*if\s*\(\s*array\s*\[\s*j\s*\]\s*<\s*array\s*\[\s*minIndex\s*\]\s*\)\s*{\s*minIndex\s*=\s*j\s*;?\s*}\s*}\s*const\s+temp\s*=\s*array\[i\]/)
 ```
 
 You should assign `array[minIndex]` to `array[i]`.
 
 ```js
-assert.match(code, /const\s+selectionSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*0\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*let\s*minIndex\s*=\s*i\s*;?\s*for\s*\(\s*let\s+j\s*=\s*i\s*\+\s*1\s*;\s*j\s*<\s*array\.length\s*;\s*j\s*\+\+\s*\)\s*{\s*console\.log\(\s*array\s*,\s*array\s*\[\s*j\s*\]\s*,\s*array\s*\[\s*minIndex\s*\]\s*\);\s*if\s*\(\s*array\s*\[\s*j\s*\]\s*<\s*array\s*\[\s*minIndex\s*\]\s*\)\s*{\s*minIndex\s*=\s*j\s*;?\s*}\s*}\s*const\s*temp\s*=\s*array\[i\]\s*;?\s*array\[i\]\s*=\s*array\[minIndex\]/)
+assert.match(code, /const\s+selectionSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*0\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*let\s+minIndex\s*=\s*i\s*;?\s*for\s*\(\s*let\s+j\s*=\s*i\s*\+\s*1\s*;\s*j\s*<\s*array\.length\s*;\s*j\s*\+\+\s*\)\s*{\s*console\.log\(\s*array\s*,\s*array\s*\[\s*j\s*\]\s*,\s*array\s*\[\s*minIndex\s*\]\s*\);\s*if\s*\(\s*array\s*\[\s*j\s*\]\s*<\s*array\s*\[\s*minIndex\s*\]\s*\)\s*{\s*minIndex\s*=\s*j\s*;?\s*}\s*}\s*const\s+temp\s*=\s*array\[i\]\s*;?\s*array\[i\]\s*=\s*array\[minIndex\]/)
 ```
 
 You should assign `temp` to `array[minIndex]`.
 
 ```js
-assert.match(code, /const\s+selectionSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*0\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*let\s*minIndex\s*=\s*i\s*;?\s*for\s*\(\s*let\s+j\s*=\s*i\s*\+\s*1\s*;\s*j\s*<\s*array\.length\s*;\s*j\s*\+\+\s*\)\s*{\s*console\.log\(\s*array\s*,\s*array\s*\[\s*j\s*\]\s*,\s*array\s*\[\s*minIndex\s*\]\s*\);\s*if\s*\(\s*array\s*\[\s*j\s*\]\s*<\s*array\s*\[\s*minIndex\s*\]\s*\)\s*{\s*minIndex\s*=\s*j\s*;?\s*}\s*}\s*const\s*temp\s*=\s*array\[i\]\s*;?\s*array\[i\]\s*=\s*array\[minIndex\]\s*;?\s*array\[minIndex\]\s*=\s*temp\s*;?\s*}/)
+assert.match(code, /const\s+selectionSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*0\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*let\s+minIndex\s*=\s*i\s*;?\s*for\s*\(\s*let\s+j\s*=\s*i\s*\+\s*1\s*;\s*j\s*<\s*array\.length\s*;\s*j\s*\+\+\s*\)\s*{\s*console\.log\(\s*array\s*,\s*array\s*\[\s*j\s*\]\s*,\s*array\s*\[\s*minIndex\s*\]\s*\);\s*if\s*\(\s*array\s*\[\s*j\s*\]\s*<\s*array\s*\[\s*minIndex\s*\]\s*\)\s*{\s*minIndex\s*=\s*j\s*;?\s*}\s*}\s*const\s+temp\s*=\s*array\[i\]\s*;?\s*array\[i\]\s*=\s*array\[minIndex\]\s*;?\s*array\[minIndex\]\s*=\s*temp\s*;?\s*}/)
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-algorithmic-thinking-by-building-a-number-sorter/64110727cefd3d1d9bdb0128.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-algorithmic-thinking-by-building-a-number-sorter/64110727cefd3d1d9bdb0128.md
index fc699945de1..7eff42c8e27 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-algorithmic-thinking-by-building-a-number-sorter/64110727cefd3d1d9bdb0128.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-algorithmic-thinking-by-building-a-number-sorter/64110727cefd3d1d9bdb0128.md
@@ -14,7 +14,7 @@ Finally, after your outer loop has finished, you need to return the array. Once
 You should `return` the `array` after your outer loop completes.
 
 ```js
-assert.match(code, /const\s+selectionSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*0\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*let\s*minIndex\s*=\s*i\s*;?\s*for\s*\(\s*let\s+j\s*=\s*i\s*\+\s*1\s*;\s*j\s*<\s*array\.length\s*;\s*j\s*\+\+\s*\)\s*{\s*console\.log\(\s*array\s*,\s*array\s*\[\s*j\s*\]\s*,\s*array\s*\[\s*minIndex\s*\]\s*\);\s*if\s*\(\s*array\s*\[\s*j\s*\]\s*<\s*array\s*\[\s*minIndex\s*\]\s*\)\s*{\s*minIndex\s*=\s*j\s*;?\s*}\s*}\s*const\s*temp\s*=\s*array\[i\]\s*;?\s*array\[i\]\s*=\s*array\[minIndex\]\s*;?\s*array\[minIndex\]\s*=\s*temp\s*;?\s*}\s*return\s+array;?\s*/)
+assert.match(code, /const\s+selectionSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*0\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*let\s+minIndex\s*=\s*i\s*;?\s*for\s*\(\s*let\s+j\s*=\s*i\s*\+\s*1\s*;\s*j\s*<\s*array\.length\s*;\s*j\s*\+\+\s*\)\s*{\s*console\.log\(\s*array\s*,\s*array\s*\[\s*j\s*\]\s*,\s*array\s*\[\s*minIndex\s*\]\s*\);\s*if\s*\(\s*array\s*\[\s*j\s*\]\s*<\s*array\s*\[\s*minIndex\s*\]\s*\)\s*{\s*minIndex\s*=\s*j\s*;?\s*}\s*}\s*const\s+temp\s*=\s*array\[i\]\s*;?\s*array\[i\]\s*=\s*array\[minIndex\]\s*;?\s*array\[minIndex\]\s*=\s*temp\s*;?\s*}\s*return\s+array;?\s*/)
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-algorithmic-thinking-by-building-a-number-sorter/6411108bc8b9c324f66aab4c.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-algorithmic-thinking-by-building-a-number-sorter/6411108bc8b9c324f66aab4c.md
index 48a45004cd0..fa607005271 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-algorithmic-thinking-by-building-a-number-sorter/6411108bc8b9c324f66aab4c.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-algorithmic-thinking-by-building-a-number-sorter/6411108bc8b9c324f66aab4c.md
@@ -14,25 +14,25 @@ Declare a `currValue` variable and assign it the value at `i`. Then, declare a `
 You should declare a `currValue` variable with `const`.
 
 ```js
-assert.match(code, /const\s+insertionSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*1\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*const\s*currValue\s*=/);
+assert.match(code, /const\s+insertionSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*1\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*const\s+currValue\s*=/);
 ```
 
 You should assign `currValue` the value at `i`.
 
 ```js
-assert.match(code, /const\s+insertionSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*1\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*const\s*currValue\s*=\s*array\s*\[\s*i\s*\]\s*;?/);
+assert.match(code, /const\s+insertionSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*1\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*const\s+currValue\s*=\s*array\s*\[\s*i\s*\]\s*;?/);
 ```
 
 You should declare a `j` variable with `let`.
 
 ```js
-assert.match(code, /const\s+insertionSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*1\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*const\s*currValue\s*=\s*array\s*\[\s*i\s*\]\s*;?\s*let\s*j\s*=/);
+assert.match(code, /const\s+insertionSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*1\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*const\s+currValue\s*=\s*array\s*\[\s*i\s*\]\s*;?\s*let\s+j\s*=/);
 ```
 
 You should assign `j` the value of `i - 1`.
 
 ```js
-assert.match(code, /const\s+insertionSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*1\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*const\s*currValue\s*=\s*array\s*\[\s*i\s*\]\s*;?\s*let\s*j\s*=\s*i\s*-\s*1\s*;?/);
+assert.match(code, /const\s+insertionSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*1\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*const\s+currValue\s*=\s*array\s*\[\s*i\s*\]\s*;?\s*let\s+j\s*=\s*i\s*-\s*1\s*;?/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-algorithmic-thinking-by-building-a-number-sorter/641110e4fb696b259dbf0bcf.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-algorithmic-thinking-by-building-a-number-sorter/641110e4fb696b259dbf0bcf.md
index b05ff4a4789..f3e4144d4db 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-algorithmic-thinking-by-building-a-number-sorter/641110e4fb696b259dbf0bcf.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-algorithmic-thinking-by-building-a-number-sorter/641110e4fb696b259dbf0bcf.md
@@ -19,31 +19,31 @@ To prevent an infinite loop, decrement `j` inside your loop.
 You should use a `while` loop.
 
 ```js
-assert.match(code, /const\s+insertionSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*1\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*const\s*currValue\s*=\s*array\s*\[\s*i\s*\]\s*;?\s*let\s*j\s*=\s*i\s*-\s*1\s*;?\s*while\s*\(/);
+assert.match(code, /const\s+insertionSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*1\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*const\s+currValue\s*=\s*array\s*\[\s*i\s*\]\s*;?\s*let\s+j\s*=\s*i\s*-\s*1\s*;?\s*while\s*\(/);
 ```
 
 Your `while` loop should have its first condition that checks the value of `j` is greater than or equal to `0`.
 
 ```js
-assert.match(code, /const\s+insertionSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*1\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*const\s*currValue\s*=\s*array\s*\[\s*i\s*\]\s*;?\s*let\s*j\s*=\s*i\s*-\s*1\s*;?\s*while\s*\(\s*j\s*>=\s*0/);
+assert.match(code, /const\s+insertionSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*1\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*const\s+currValue\s*=\s*array\s*\[\s*i\s*\]\s*;?\s*let\s+j\s*=\s*i\s*-\s*1\s*;?\s*while\s*\(\s*j\s*>=\s*0/);
 ```
 
 Your `while` loop should use the AND operator.
 
 ```js
-assert.match(code, /const\s+insertionSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*1\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*const\s*currValue\s*=\s*array\s*\[\s*i\s*\]\s*;?\s*let\s*j\s*=\s*i\s*-\s*1\s*;?\s*while\s*\(\s*j\s*>=\s*0\s*&&/);
+assert.match(code, /const\s+insertionSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*1\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*const\s+currValue\s*=\s*array\s*\[\s*i\s*\]\s*;?\s*let\s+j\s*=\s*i\s*-\s*1\s*;?\s*while\s*\(\s*j\s*>=\s*0\s*&&/);
 ```
 
 Your `while` loop should have a condition that checks the value of `array[j]` is greater than `currValue`.
 
 ```js
-assert.match(code, /const\s+insertionSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*1\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*const\s*currValue\s*=\s*array\s*\[\s*i\s*\]\s*;?\s*let\s*j\s*=\s*i\s*-\s*1\s*;?\s*while\s*\(\s*j\s*>=\s*0\s*&&\s*array\s*\[\s*j\s*\]\s*>\s*currValue\s*\)/);
+assert.match(code, /const\s+insertionSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*1\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*const\s+currValue\s*=\s*array\s*\[\s*i\s*\]\s*;?\s*let\s+j\s*=\s*i\s*-\s*1\s*;?\s*while\s*\(\s*j\s*>=\s*0\s*&&\s*array\s*\[\s*j\s*\]\s*>\s*currValue\s*\)/);
 ```
 
 Your `while` loop should decrement `j` inside the loop.
 
 ```js
-assert.match(code, /const\s+insertionSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*1\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*const\s*currValue\s*=\s*array\s*\[\s*i\s*\]\s*;?\s*let\s*j\s*=\s*i\s*-\s*1\s*;?\s*while\s*\(\s*j\s*>=\s*0\s*&&\s*array\s*\[\s*j\s*\]\s*>\s*currValue\s*\)\s*{\s*j--;?\s*\}/);
+assert.match(code, /const\s+insertionSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*1\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*const\s+currValue\s*=\s*array\s*\[\s*i\s*\]\s*;?\s*let\s+j\s*=\s*i\s*-\s*1\s*;?\s*while\s*\(\s*j\s*>=\s*0\s*&&\s*array\s*\[\s*j\s*\]\s*>\s*currValue\s*\)\s*{\s*j--;?\s*\}/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-algorithmic-thinking-by-building-a-number-sorter/6411135e9ee2fa26c882eb02.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-algorithmic-thinking-by-building-a-number-sorter/6411135e9ee2fa26c882eb02.md
index 799f9b566bd..e97522ef715 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-algorithmic-thinking-by-building-a-number-sorter/6411135e9ee2fa26c882eb02.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-algorithmic-thinking-by-building-a-number-sorter/6411135e9ee2fa26c882eb02.md
@@ -16,7 +16,7 @@ Do so by assigning the value at the `j` index to the next index.
 Before decrementing `j`, assign the value at `j` to the index `j + 1`.
 
 ```js
-assert.match(code, /const\s+insertionSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*1\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*const\s*currValue\s*=\s*array\s*\[\s*i\s*\]\s*;?\s*let\s*j\s*=\s*i\s*-\s*1\s*;?\s*while\s*\(\s*j\s*>=\s*0\s*&&\s*array\s*\[\s*j\s*\]\s*>\s*currValue\s*\)\s*{\s*array\s*\[\s*j\s*\+\s*1\s*\]\s*=\s*array\s*\[\s*j\s*\];?\s*j--;?\s*\}/);
+assert.match(code, /const\s+insertionSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*1\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*const\s+currValue\s*=\s*array\s*\[\s*i\s*\]\s*;?\s*let\s+j\s*=\s*i\s*-\s*1\s*;?\s*while\s*\(\s*j\s*>=\s*0\s*&&\s*array\s*\[\s*j\s*\]\s*>\s*currValue\s*\)\s*{\s*array\s*\[\s*j\s*\+\s*1\s*\]\s*=\s*array\s*\[\s*j\s*\];?\s*j--;?\s*\}/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-algorithmic-thinking-by-building-a-number-sorter/64112c9cf53d632910ea2f9b.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-algorithmic-thinking-by-building-a-number-sorter/64112c9cf53d632910ea2f9b.md
index 1842c0a1446..8d8c9dd9b9a 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-algorithmic-thinking-by-building-a-number-sorter/64112c9cf53d632910ea2f9b.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-algorithmic-thinking-by-building-a-number-sorter/64112c9cf53d632910ea2f9b.md
@@ -16,7 +16,7 @@ Use the assignment operator to insert your current value into the correct index.
 You should assign `currValue` to the index `j + 1`.
 
 ```js
-assert.match(code, /const\s+insertionSort\s*=\s*\(\s*array\s*\)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*1\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*const\s*currValue\s*=\s*array\s*\[\s*i\s*\]\s*;?\s*let\s*j\s*=\s*i\s*-\s*1\s*;?\s*while\s*\(\s*j\s*>=\s*0\s*&&\s*array\s*\[\s*j\s*\]\s*>\s*currValue\s*\)\s*{\s*array\s*\[\s*j\s*\+\s*1\s*\]\s*=\s*array\s*\[\s*j\s*\];?\s*j--;?\s*\}\s*array\s*\[\s*j\s*\+\s*1\s*\]\s*=\s*currValue;?/);
+assert.match(code, /const\s+insertionSort\s*=\s*\(\s*array\s*\)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*1\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*const\s+currValue\s*=\s*array\s*\[\s*i\s*\]\s*;?\s*let\s+j\s*=\s*i\s*-\s*1\s*;?\s*while\s*\(\s*j\s*>=\s*0\s*&&\s*array\s*\[\s*j\s*\]\s*>\s*currValue\s*\)\s*{\s*array\s*\[\s*j\s*\+\s*1\s*\]\s*=\s*array\s*\[\s*j\s*\];?\s*j--;?\s*\}\s*array\s*\[\s*j\s*\+\s*1\s*\]\s*=\s*currValue;?/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-algorithmic-thinking-by-building-a-number-sorter/64112cea9e6ac22a314628b0.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-algorithmic-thinking-by-building-a-number-sorter/64112cea9e6ac22a314628b0.md
index b54b1f5bc4c..32af423fc5b 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-algorithmic-thinking-by-building-a-number-sorter/64112cea9e6ac22a314628b0.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-algorithmic-thinking-by-building-a-number-sorter/64112cea9e6ac22a314628b0.md
@@ -14,7 +14,7 @@ After your `for` loop has finished, you need to return the array. You should the
 You should `return` the `array`.
 
 ```js
-assert.match(code, /const\s+insertionSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*1\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*const\s*currValue\s*=\s*array\s*\[\s*i\s*\]\s*;?\s*let\s*j\s*=\s*i\s*-\s*1\s*;?\s*while\s*\(\s*j\s*>=\s*0\s*&&\s*array\s*\[\s*j\s*\]\s*>\s*currValue\s*\)\s*{\s*array\s*\[\s*j\s*\+\s*1\s*\]\s*=\s*array\s*\[\s*j\s*\];?\s*j--;?\s*\}\s*array\s*\[\s*j\s*\+\s*1\s*\]\s*=\s*currValue;?\s*\}\s*return\s+array;?\s*\}/);
+assert.match(code, /const\s+insertionSort\s*=\s*(\(\s*array\s*\)|array)\s*=>\s*{\s*for\s*\(\s*let\s+i\s*=\s*1\s*;\s*i\s*<\s*array\.length\s*;\s*i\s*\+\+\s*\)\s*{\s*const\s+currValue\s*=\s*array\s*\[\s*i\s*\]\s*;?\s*let\s+j\s*=\s*i\s*-\s*1\s*;?\s*while\s*\(\s*j\s*>=\s*0\s*&&\s*array\s*\[\s*j\s*\]\s*>\s*currValue\s*\)\s*{\s*array\s*\[\s*j\s*\+\s*1\s*\]\s*=\s*array\s*\[\s*j\s*\];?\s*j--;?\s*\}\s*array\s*\[\s*j\s*\+\s*1\s*\]\s*=\s*currValue;?\s*\}\s*return\s+array;?\s*\}/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62a3a0a3c0a4b32915d26a6e.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62a3a0a3c0a4b32915d26a6e.md
index 16134e94517..481e21b74ae 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62a3a0a3c0a4b32915d26a6e.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62a3a0a3c0a4b32915d26a6e.md
@@ -40,13 +40,13 @@ assert.match(code, /xp/);
 You should not assign a value to your variable.
 
 ```js
-assert.notMatch(code, /let xp =/);
+assert.notMatch(code, /let\s+xp\s*=/);
 ```
 
 Don't forget the semi-colon at the end of the line.
 
 ```js
-assert.match(code, /let xp;/);
+assert.match(code, /let\s+xp\s*;/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62a3a75d8466a12e009eff76.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62a3a75d8466a12e009eff76.md
index d049f57b5f7..b05c3232a80 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62a3a75d8466a12e009eff76.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62a3a75d8466a12e009eff76.md
@@ -14,25 +14,25 @@ Initialize another variable called `health` with a value of `100`, and a variabl
 You should use `let` to declare a variable called `health`.
 
 ```js
-assert.match(code, /let health/);
+assert.match(code, /let\s+health/);
 ```
 
 You should initialize a variable called `health` with a value of `100`.
 
 ```js
-assert.match(code, /let health\s?=\s?100/);
+assert.match(code, /let\s+health\s*=\s*100/);
 ```
 
 You should use `let` to declare a variable called `gold`.
 
 ```js
-assert.match(code, /let gold/);
+assert.match(code, /let\s+gold/);
 ```
 
 You should initialize a variable called `gold` with a value of `50`.
 
 ```js
-assert.match(code, /let gold\s?=\s?50/);
+assert.match(code, /let\s+gold\s*=\s*50/);
 ```
 
 `health` should have a value of `100`.
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62a3a7e4f1060e2fc5ffb34b.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62a3a7e4f1060e2fc5ffb34b.md
index b3c9786696e..e4b26e035c8 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62a3a7e4f1060e2fc5ffb34b.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62a3a7e4f1060e2fc5ffb34b.md
@@ -20,7 +20,7 @@ let thisIsCamelCase;
 You should use `let` to declare a variable called `currentWeapon`.
 
 ```js
-assert.match(code, /let currentWeapon/i);
+assert.match(code, /let\s+currentWeapon/i);
 ```
 
 You should use camelCase to name your variable.
@@ -38,7 +38,7 @@ assert.equal(currentWeapon, 0);
 You should initialize your variable to `0`.
 
 ```js
-assert.match(code, /let currentWeapon\s?=\s?0/);
+assert.match(code, /let\s+currentWeapon\s*=\s*0/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62a3b3eab50e193608c19fc6.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62a3b3eab50e193608c19fc6.md
index 0a915f6b553..5b440ff5de9 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62a3b3eab50e193608c19fc6.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62a3b3eab50e193608c19fc6.md
@@ -14,7 +14,7 @@ Declare a variable called `fighting` but do not initialize it with a value. Reme
 You should use `let` to declare a variable `fighting`.
 
 ```js
-assert.match(code, /let fighting/);
+assert.match(code, /let\s+fighting/);
 ```
 
 Your `fighting` variable should not have a value.
@@ -26,7 +26,7 @@ assert.isUndefined(fighting);
 You should not assign a value to your `fighting` variable. Don't forget the semi-colon at the end of the line.
 
 ```js
-assert.match(code, /let fighting;/);
+assert.match(code, /let\s+fighting;/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62a3b41c9494f937560640ab.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62a3b41c9494f937560640ab.md
index af0f47dd66f..e005b5a8659 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62a3b41c9494f937560640ab.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62a3b41c9494f937560640ab.md
@@ -14,7 +14,7 @@ Declare two more variables named `monsterHealth` and `inventory`, but do not ini
 You should use `let` to declare your `monsterHealth` variable.
 
 ```js
-assert.match(code, /let monsterHealth/i);
+assert.match(code, /let\s+monsterHealth/i);
 ```
 
 You should use camelCase to name your `monsterHealth` variable.
@@ -32,13 +32,13 @@ assert.isUndefined(monsterHealth);
 You should not assign a value to your `monsterHealth` variable. Remember your semi-colon.
 
 ```js
-assert.match(code, /let monsterHealth;/);
+assert.match(code, /let\s+monsterHealth;/);
 ```
 
 You should use `let` to declare your `inventory` variable.
 
 ```js
-assert.match(code, /let inventory/i);
+assert.match(code, /let\s+inventory/i);
 ```
 
 `inventory` should not have a value.
@@ -50,7 +50,7 @@ assert.isUndefined(inventory);
 You should not assign a value to your `inventory` variable. Remember your semi-colon.
 
 ```js
-assert.match(code, /let inventory;/);
+assert.match(code, /let\s+inventory;/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62a3b79d520a7f3d0e25afd6.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62a3b79d520a7f3d0e25afd6.md
index b6be1bd702b..ad8cd0d7ac5 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62a3b79d520a7f3d0e25afd6.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62a3b79d520a7f3d0e25afd6.md
@@ -24,7 +24,7 @@ Create a `button1` variable and use `querySelector()` to assign it your element
 You should use `let` to declare a `button1` variable.
 
 ```js
-assert.match(code, /let button1/);
+assert.match(code, /let\s+button1/);
 ```
 
 You should use `document.querySelector()`.
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62a3bb9aeefe4b3fc43c6d7b.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62a3bb9aeefe4b3fc43c6d7b.md
index a588b6de6da..9a0a02b1aac 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62a3bb9aeefe4b3fc43c6d7b.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62a3bb9aeefe4b3fc43c6d7b.md
@@ -16,7 +16,7 @@ Change your `button1` variable to be declared with the `const` keyword.
 Your `button1` variable should be declared with `const`.
 
 ```js
-assert.match(code, /const button1/);
+assert.match(code, /const\s+button1/);
 ```
 
 Your `button1` variable should still have the value of your `#button1` element.
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62a3bec30ea7f941412512dc.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62a3bec30ea7f941412512dc.md
index 2bf5a05d0f0..3e9326fb840 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62a3bec30ea7f941412512dc.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62a3bec30ea7f941412512dc.md
@@ -18,7 +18,7 @@ Remember to declare these with the `const` keyword, and name the variables to ma
 You should declare a `text` variable with `const`.
 
 ```js
-assert.match(code, /const text/);
+assert.match(code, /const\s+text/);
 ```
 
 Your `text` variable should have the value of your `#text` element.
@@ -30,7 +30,7 @@ assert.deepEqual(text, document.querySelector('#text'));
 You should declare a `xpText` variable with `const`.
 
 ```js
-assert.match(code, /const xpText/);
+assert.match(code, /const\s+xpText/);
 ```
 
 Your `xpText` variable should have the value of your `#xpText` element.
@@ -42,7 +42,7 @@ assert.deepEqual(xpText, document.querySelector('#xpText'));
 You should declare a `healthText` variable with `const`.
 
 ```js
-assert.match(code, /const healthText/);
+assert.match(code, /const\s+healthText/);
 ```
 
 Your `healthText` variable should have the value of your `#healthText` element.
@@ -54,7 +54,7 @@ assert.deepEqual(healthText, document.querySelector('#healthText'));
 You should declare a `goldText` variable with `const`.
 
 ```js
-assert.match(code, /const goldText/);
+assert.match(code, /const\s+goldText/);
 ```
 
 Your `goldText` variable should have the value of your `#goldText` element.
@@ -66,7 +66,7 @@ assert.deepEqual(goldText, document.querySelector('#goldText'));
 You should declare a `monsterStats` variable with `const`.
 
 ```js
-assert.match(code, /const monsterStats/);
+assert.match(code, /const\s+monsterStats/);
 ```
 
 Your `monsterStats` variable should have the value of your `#monsterStats` element.
@@ -78,7 +78,7 @@ assert.deepEqual(monsterStats, document.querySelector('#monsterStats'));
 You should declare a `monsterName` variable with `const`.
 
 ```js
-assert.match(code, /const monsterName/);
+assert.match(code, /const\s+monsterName/);
 ```
 
 Your `monsterName` variable should have the value of your `#monsterName` element.
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62a8a929e4260d08093756d2.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62a8a929e4260d08093756d2.md
index 8484fcabe39..71d6d5a95d6 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62a8a929e4260d08093756d2.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62a8a929e4260d08093756d2.md
@@ -14,7 +14,7 @@ Create a variable called `locations` and set it to an empty array.
 You should use `const` to declare `locations`.
 
 ```js
-assert.match(code, /const locations/);
+assert.match(code, /const\s+locations/);
 ```
 
 `locations` should be an array.
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62a8c6815f5f1a29735efe1b.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62a8c6815f5f1a29735efe1b.md
index 8c05efc65e0..df552626f1b 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62a8c6815f5f1a29735efe1b.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62a8c6815f5f1a29735efe1b.md
@@ -14,7 +14,7 @@ Use `const` to create a `weapons` variable above your `locations` array. Assign
 You should use `const` to declare your `weapons` variable.
 
 ```js
-assert.match(code, /const weapons/i);
+assert.match(code, /const\s+weapons/i);
 ```
 
 Your `weapons` variable should be an array.
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62a8d81f539f004776dd9b1e.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62a8d81f539f004776dd9b1e.md
index e7bc62aec01..e2f2a5bb227 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62a8d81f539f004776dd9b1e.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62a8d81f539f004776dd9b1e.md
@@ -16,7 +16,7 @@ Below your `weapons` array, define a `monsters` variable and assign it an array.
 You should use `const` to declare a `monsters` variable.
 
 ```js
-assert.match(code, /const\s*monsters/);
+assert.match(code, /const\s+monsters/);
 ```
 
 Your `monsters` variable should be an array.
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62aa1d9f535e102e4663e7a6.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62aa1d9f535e102e4663e7a6.md
index 2971b90b057..6ba53f9de9d 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62aa1d9f535e102e4663e7a6.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62aa1d9f535e102e4663e7a6.md
@@ -16,7 +16,7 @@ This will set the monster's attack to five times their `level` minus a random nu
 You should use `const` to declare the variable `hit`.
 
 ```js
-assert.match(code, /const\s*hit/);
+assert.match(code, /const\s+hit/);
 ```
 
 You should use the equation `(level * 5) - (Math.floor(Math.random() * xp))`.
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62aa27c40ca6f04ab8be5fac.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62aa27c40ca6f04ab8be5fac.md
index 8d16bef0808..c41ffdbcea4 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62aa27c40ca6f04ab8be5fac.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62aa27c40ca6f04ab8be5fac.md
@@ -20,7 +20,7 @@ for (let x = 1; x < 5; x++) {
 You should copy the above loop into your `pick` function.
 
 ```js
-assert.match(pick.toString(), /for\s*\(\s*(let|var)\s*x\s*=\s*1\s*;\s*x\s*<\s*5\s*;\s*x\s*\+\+\s*\)/);
+assert.match(pick.toString(), /for\s*\(\s*(let|var)\s+x\s*=\s*1\s*;\s*x\s*<\s*5\s*;\s*x\s*\+\+\s*\)/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62aa28032d863d4bd8058799.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62aa28032d863d4bd8058799.md
index 3304a741681..0030e660a57 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62aa28032d863d4bd8058799.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62aa28032d863d4bd8058799.md
@@ -18,7 +18,7 @@ Many `for` loops use `i` as the counter and start from 0, so change `let x = 1;`
 You should change your initialization in the `for` loop to be `let i = 0;`.
 
 ```js
-assert.match(pick.toString(), /for\s*\(\s*(let|var)\s*i\s*=\s*0\s*;/)
+assert.match(pick.toString(), /for\s*\(\s*(let|var)\s+i\s*=\s*0\s*;/)
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62aa287434dc284cea01157c.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62aa287434dc284cea01157c.md
index 10bfe57c15f..b6b9c8a6121 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62aa287434dc284cea01157c.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62aa287434dc284cea01157c.md
@@ -16,7 +16,7 @@ We want the loop to run 10 times, so change `x < 5` to `i < 10`.
 You should update your condition statement to be `i < 10`.
 
 ```js
-assert.match(pick.toString(), /for\s*\(\s*(let|var)\s*i\s*=\s*0\s*;\s*i\s*<\s*10\s*;/)
+assert.match(pick.toString(), /for\s*\(\s*(let|var)\s+i\s*=\s*0\s*;\s*i\s*<\s*10\s*;/)
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62aa28bbd6323e4dfb3ac43e.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62aa28bbd6323e4dfb3ac43e.md
index 81dc813ebfb..d9ec16a15e7 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62aa28bbd6323e4dfb3ac43e.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62aa28bbd6323e4dfb3ac43e.md
@@ -16,7 +16,7 @@ Since we changed the initialization statement to use `i` instead of `x`, change
 You should change your final expression to `i++`.
 
 ```js
-assert.match(pick.toString(), /for\s*\(\s*(let|var)\s*i\s*=\s*0\s*;\s*i\s*<\s*10\s*;\s*i\+\+\s*\)/)
+assert.match(pick.toString(), /for\s*\(\s*(let|var)\s+i\s*=\s*0\s*;\s*i\s*<\s*10\s*;\s*i\+\+\s*\)/)
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62fc20387ef88d1d1998aac5.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62fc20387ef88d1d1998aac5.md
index e221b8b819f..6270c70157d 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62fc20387ef88d1d1998aac5.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62fc20387ef88d1d1998aac5.md
@@ -14,7 +14,7 @@ Use `querySelector()` to get the other two `button` elements using their `id`s:
 You should declare a `button2` variable with `const`.
 
 ```js
-assert.match(code, /const button2/);
+assert.match(code, /const\s+button2/);
 ```
 
 Your `button2` variable should have the value of your `#button2` element.
@@ -26,7 +26,7 @@ assert.deepEqual(button2, document.querySelector('#button2'));
 You should declare a `button3` variable with `const`.
 
 ```js
-assert.match(code, /const button3/);
+assert.match(code, /const\s+button3/);
 ```
 
 Your `button3` variable should have the value of your `#button3` element.
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62fc211760bfc220f4734800.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62fc211760bfc220f4734800.md
index 0bedf2d0b00..18089ca1d44 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62fc211760bfc220f4734800.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/62fc211760bfc220f4734800.md
@@ -16,7 +16,7 @@ Declare a new variable with the `const` keyword and name it `monsterHealthText`.
 You should declare a `monsterHealthText` variable with `const`.
 
 ```js
-assert.match(code, /const monsterHealthText/);
+assert.match(code, /const\s+monsterHealthText/);
 ```
 
 Your `monsterHealthText` variable should have the value of your `#monsterHealth` element.
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-oop-by-building-a-shopping-cart/63f03686c5ea863533ec71f4.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-oop-by-building-a-shopping-cart/63f03686c5ea863533ec71f4.md
index a4c481b5796..ff1da0accf4 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-oop-by-building-a-shopping-cart/63f03686c5ea863533ec71f4.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-oop-by-building-a-shopping-cart/63f03686c5ea863533ec71f4.md
@@ -22,7 +22,7 @@ Assign the value of calling your new `.calculateTaxes()` method, passing `subTot
 
 ```js
 const afterCalculateTotal = code.split('calculateTotal')[1];
-assert.match(afterCalculateTotal, /const\s*tax\s*=\s*this\s*\.\s*calculateTaxes\s*\(\s*subTotal\s*\)/);
+assert.match(afterCalculateTotal, /const\s+tax\s*=\s*this\s*\.\s*calculateTaxes\s*\(\s*subTotal\s*\)/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-string-and-array-methods-by-building-a-music-player/653281af14be5f2055310f8e.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-string-and-array-methods-by-building-a-music-player/653281af14be5f2055310f8e.md
index 72d4d0beec4..0f8411659cf 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-string-and-array-methods-by-building-a-music-player/653281af14be5f2055310f8e.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-string-and-array-methods-by-building-a-music-player/653281af14be5f2055310f8e.md
@@ -16,7 +16,7 @@ Declare an empty `userData` object using the `let` keyword.
 You should use the `let` keyword to create an empty `userData` object.
 
 ```js
-assert.match(code, /let\s*userData\s*=\s*\{\s*\};?/)
+assert.match(code, /let\s+userData\s*=\s*\{\s*\};?/)
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-string-and-array-methods-by-building-a-music-player/65362bfd67d61d517deef191.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-string-and-array-methods-by-building-a-music-player/65362bfd67d61d517deef191.md
index 90cffb8fe22..f13ad363700 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-string-and-array-methods-by-building-a-music-player/65362bfd67d61d517deef191.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-string-and-array-methods-by-building-a-music-player/65362bfd67d61d517deef191.md
@@ -46,7 +46,7 @@ assert.match(code, /userData\?\.songs\.find\(\s*(\(\s*song\s*\)|song)\s*=>\s*(so
 Your `find` method should be assigned to a `song` constant.
 
 ```js
-assert.match(code, /const\s*song\s*=\s*userData\?\.songs\.find\(\s*(\(\s*song\s*\)|song)\s*=>\s*(song\.id\s*===\s*id|id\s*===\s*song\.id)\);?/)
+assert.match(code, /const\s+song\s*=\s*userData\?\.songs\.find\(\s*(\(\s*song\s*\)|song)\s*=>\s*(song\.id\s*===\s*id|id\s*===\s*song\.id)\);?/)
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-string-and-array-methods-by-building-a-music-player/653635c731206b718659d3d5.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-string-and-array-methods-by-building-a-music-player/653635c731206b718659d3d5.md
index 6c14e7d4a25..1cb3c6acc0c 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-string-and-array-methods-by-building-a-music-player/653635c731206b718659d3d5.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-string-and-array-methods-by-building-a-music-player/653635c731206b718659d3d5.md
@@ -16,19 +16,19 @@ Also, set the `audio.title` property equal to `song.title`. This tells the audio
 You should not modify the exist `playSong` function and its content.
 
 ```js
-assert.match(code, /const\s*playSong\s*=\s*\(id\)\s*=>\s*\{\s*const\s*song\s*=\s*userData\?\.songs\.find\(\(song\)\s=>\s*song.id\s===\s*id\);?/)
+assert.match(code, /const\s+playSong\s*=\s*\(id\)\s*=>\s*\{\s*const\s+song\s*=\s*userData\?\.songs\.find\(\(song\)\s=>\s*song.id\s===\s*id\);?/)
 ```
 
 You should set `audio.src` to `song.src`.
 
 ```js
-assert.match(code, /const\s*playSong\s*=\s*\(id\)\s*=>\s*\{\s*const\s*song\s*=\s*userData\?\.songs\.find\(\(song\)\s=>\s*song.id\s===\s*id\);?\s*audio\.src\s*=\s*song\.src;?/)
+assert.match(code, /const\s+playSong\s*=\s*\(id\)\s*=>\s*\{\s*const\s+song\s*=\s*userData\?\.songs\.find\(\(song\)\s=>\s*song.id\s===\s*id\);?\s*audio\.src\s*=\s*song\.src;?/)
 ```
 
 You should set `audio.title` to `song.title`.
 
 ```js
-assert.match(code, /const\s*playSong\s*=\s*\(id\)\s*=>\s*\{\s*const\s*song\s*=\s*userData\?\.songs\.find\(\(song\)\s=>\s*song.id\s===\s*id\);?\s*audio\.src\s*=\s*song\.src;?\s*audio\.title\s*=\s*song\.title;?\s*\};?/)
+assert.match(code, /const\s+playSong\s*=\s*\(id\)\s*=>\s*\{\s*const\s+song\s*=\s*userData\?\.songs\.find\(\(song\)\s=>\s*song.id\s===\s*id\);?\s*audio\.src\s*=\s*song\.src;?\s*audio\.title\s*=\s*song\.title;?\s*\};?/)
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-string-and-array-methods-by-building-a-music-player/655476e1ff522252fdcce5e4.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-string-and-array-methods-by-building-a-music-player/655476e1ff522252fdcce5e4.md
index 9986f0a625a..95629bea240 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-string-and-array-methods-by-building-a-music-player/655476e1ff522252fdcce5e4.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-string-and-array-methods-by-building-a-music-player/655476e1ff522252fdcce5e4.md
@@ -32,7 +32,7 @@ You should set the `currentSongIndex` constant to `getCurrentSongIndex()` inside
 ```js
 const splitter = code.split('const getCurrentSongIndex = () => userData?.songs.indexOf(userData.currentSong);')
 
-assert.match(splitter[0], /if\s*\(userData\?\.currentSong\s*===\s*null\)\s*\{\s*playSong\(userData\?\.songs\[0\]\.id\);?\s*\}\s*else\s*\{\s*const\s*currentSongIndex\s*=\s*getCurrentSongIndex\(\);?\s*\}/)
+assert.match(splitter[0], /if\s*\(userData\?\.currentSong\s*===\s*null\)\s*\{\s*playSong\(userData\?\.songs\[0\]\.id\);?\s*\}\s*else\s*\{\s*const\s+currentSongIndex\s*=\s*getCurrentSongIndex\(\);?\s*\}/)
 ```
 
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-string-and-array-methods-by-building-a-music-player/655479aa3e1e0360ae38b7a6.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-string-and-array-methods-by-building-a-music-player/655479aa3e1e0360ae38b7a6.md
index b4260590a0c..469cab46669 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-string-and-array-methods-by-building-a-music-player/655479aa3e1e0360ae38b7a6.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-string-and-array-methods-by-building-a-music-player/655479aa3e1e0360ae38b7a6.md
@@ -20,7 +20,7 @@ You should not modify the existing `if` statement, its `else` block, and content
 ```js
 const splitter = code.split('const getCurrentSongIndex = () => userData?.songs.indexOf(userData.currentSong);')
 
-assert.match(splitter[0], /if\s*\(userData\?\.currentSong\s*===\s*null\)\s*\{\s*playSong\(userData\?\.songs\[0\]\.id\);?\s*\}\s*else\s*\{\s*const\s*currentSongIndex\s*=\s*getCurrentSongIndex\(\);?\s*/)
+assert.match(splitter[0], /if\s*\(userData\?\.currentSong\s*===\s*null\)\s*\{\s*playSong\(userData\?\.songs\[0\]\.id\);?\s*\}\s*else\s*\{\s*const\s+currentSongIndex\s*=\s*getCurrentSongIndex\(\);?\s*/)
 ```
 
 You should assign `userData?.songs[currentSongIndex + 1]` to a `nextSong` constant.
@@ -28,7 +28,7 @@ You should assign `userData?.songs[currentSongIndex + 1]` to a `nextSong` consta
 ```js
 const splitter = code.split('const getCurrentSongIndex = () => userData?.songs.indexOf(userData.currentSong);')
 
-assert.match(splitter[0], /if\s*\(userData\?\.currentSong\s*===\s*null\)\s*\{\s*playSong\(userData\?\.songs\[0\]\.id\);?\s*\}\s*else\s*\{\s*const\s*currentSongIndex\s*=\s*getCurrentSongIndex\(\);?\s*const\s*nextSong\s*=\s*userData\?\.songs\[currentSongIndex\s*\+\s*1\];?\s*/)
+assert.match(splitter[0], /if\s*\(userData\?\.currentSong\s*===\s*null\)\s*\{\s*playSong\(userData\?\.songs\[0\]\.id\);?\s*\}\s*else\s*\{\s*const\s+currentSongIndex\s*=\s*getCurrentSongIndex\(\);?\s*const\s+nextSong\s*=\s*userData\?\.songs\[currentSongIndex\s*\+\s*1\];?\s*/)
 ```
 
 You should call the `playSong` function with `nextSong.id`.
@@ -36,7 +36,7 @@ You should call the `playSong` function with `nextSong.id`.
 ```js
 const splitter = code.split('const getCurrentSongIndex = () => userData?.songs.indexOf(userData.currentSong);')
 
-assert.match(splitter[0], /if\s*\(userData\?\.currentSong\s*===\s*null\)\s*\{\s*playSong\(userData\?\.songs\[0\]\.id\);?\s*\}\s*else\s*\{\s*const\s*currentSongIndex\s*=\s*getCurrentSongIndex\(\);?\s*const\s*nextSong\s*=\s*userData\?\.songs\[currentSongIndex\s*\+\s*1\];?\s*playSong\(nextSong\.id\);?\s*\}/)
+assert.match(splitter[0], /if\s*\(userData\?\.currentSong\s*===\s*null\)\s*\{\s*playSong\(userData\?\.songs\[0\]\.id\);?\s*\}\s*else\s*\{\s*const\s+currentSongIndex\s*=\s*getCurrentSongIndex\(\);?\s*const\s+nextSong\s*=\s*userData\?\.songs\[currentSongIndex\s*\+\s*1\];?\s*playSong\(nextSong\.id\);?\s*\}/)
 ```
 
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-string-and-array-methods-by-building-a-music-player/655482742cc5499726e3f347.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-string-and-array-methods-by-building-a-music-player/655482742cc5499726e3f347.md
index 8ce9f150cee..528e71741be 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-string-and-array-methods-by-building-a-music-player/655482742cc5499726e3f347.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-string-and-array-methods-by-building-a-music-player/655482742cc5499726e3f347.md
@@ -40,7 +40,7 @@ assert.match(code, /const\s+playPreviousSong\s*=\s*\(\)\s*=>\s*\{\s*if\s*\(userD
 You should call `getCurrentSongIndex` and assign it to `currentSongIndex` inside the `else` block of your `if` statement.
 
 ```js
-assert.match(code, /const\s+playPreviousSong\s*=\s*\(\)\s*=>\s*\{\s*if\s*\(userData\?.currentSong\s*===\s*null\)\s*\{?\s*return;?\s*\}?\s*else\s*\{\s*const\s*currentSongIndex\s*=\s*getCurrentSongIndex\(\);?\s*/)
+assert.match(code, /const\s+playPreviousSong\s*=\s*\(\)\s*=>\s*\{\s*if\s*\(userData\?.currentSong\s*===\s*null\)\s*\{?\s*return;?\s*\}?\s*else\s*\{\s*const\s+currentSongIndex\s*=\s*getCurrentSongIndex\(\);?\s*/)
 ```
 
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-string-and-array-methods-by-building-a-music-player/655483ebf0096ba02b2c3d4c.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-string-and-array-methods-by-building-a-music-player/655483ebf0096ba02b2c3d4c.md
index b8da840f522..2d83755f3b9 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-string-and-array-methods-by-building-a-music-player/655483ebf0096ba02b2c3d4c.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-string-and-array-methods-by-building-a-music-player/655483ebf0096ba02b2c3d4c.md
@@ -14,19 +14,19 @@ To get the previous song, subtract `1` from the `currentSongIndex` of `userData?
 You should not modify the existing `if` statement and its content.
 
 ```js
-assert.match(code, /if\s*\(userData\?.currentSong\s*===\s*null\)\s*\{?\s*return;?\s*\}?\s*else\s*\{\s*const\s*currentSongIndex\s*=\s*getCurrentSongIndex\(\);?\s*/)
+assert.match(code, /if\s*\(userData\?.currentSong\s*===\s*null\)\s*\{?\s*return;?\s*\}?\s*else\s*\{\s*const\s+currentSongIndex\s*=\s*getCurrentSongIndex\(\);?\s*/)
 ```
 
 You should assign `userData?.songs[currentSongIndex - 1]` to a `previousSong` constant.
 
 ```js
-assert.match(code, /if\s*\(userData\?.currentSong\s*===\s*null\)\s*\{?\s*return;?\s*\}?\s*else\s*\{\s*const\s*currentSongIndex\s*=\s*getCurrentSongIndex\(\);?\s*const\s*previousSong\s*=\s*userData\?\.songs\[currentSongIndex\s*-\s*1\];?\s*/)
+assert.match(code, /if\s*\(userData\?.currentSong\s*===\s*null\)\s*\{?\s*return;?\s*\}?\s*else\s*\{\s*const\s+currentSongIndex\s*=\s*getCurrentSongIndex\(\);?\s*const\s+previousSong\s*=\s*userData\?\.songs\[currentSongIndex\s*-\s*1\];?\s*/)
 ```
 
 You should call the `playSong` function with `previousSong.id`.
 
 ```js
-assert.match(code, /if\s*\(userData\?.currentSong\s*===\s*null\)\s*\{?\s*return;?\s*\}?\s*else\s*\{\s*const\s*currentSongIndex\s*=\s*getCurrentSongIndex\(\);?\s*const\s*previousSong\s*=\s*userData\?\.songs\[currentSongIndex\s*-\s*1\];?\s*playSong\(previousSong\.id\);?\s*\}/)
+assert.match(code, /if\s*\(userData\?.currentSong\s*===\s*null\)\s*\{?\s*return;?\s*\}?\s*else\s*\{\s*const\s+currentSongIndex\s*=\s*getCurrentSongIndex\(\);?\s*const\s+previousSong\s*=\s*userData\?\.songs\[currentSongIndex\s*-\s*1\];?\s*playSong\(previousSong\.id\);?\s*\}/)
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-string-and-array-methods-by-building-a-music-player/6554860ea4dfbab2f4786fc8.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-string-and-array-methods-by-building-a-music-player/6554860ea4dfbab2f4786fc8.md
index c98462bd013..f260cacb59b 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-string-and-array-methods-by-building-a-music-player/6554860ea4dfbab2f4786fc8.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-string-and-array-methods-by-building-a-music-player/6554860ea4dfbab2f4786fc8.md
@@ -34,13 +34,13 @@ assert.match(code, /const\s+highlightCurrentSong\s*=\s*\(\)\s*=>\s*{\s*/)
 You should create a `playlistSongElements` constant inside your `highlightCurrentSong` function.
 
 ```js
-assert.match(code, /const\s+highlightCurrentSong\s*=\s*\(\)\s*=>\s*{\s*const\s*playlistSongElements\s*=\s*/)
+assert.match(code, /const\s+highlightCurrentSong\s*=\s*\(\)\s*=>\s*{\s*const\s+playlistSongElements\s*=\s*/)
 ```
 
 You should use the `querySelectorAll()` method to select the `.playlist-song` element and assign it to the `playlistSongElements` constant.
 
 ```js
-assert.match(code, /const\s+highlightCurrentSong\s*=\s*\(\)\s*=>\s*{\s*const\s*playlistSongElements\s*=\s*document\.querySelectorAll\(('|")\.playlist-song\1\);?\s*\};?/)
+assert.match(code, /const\s+highlightCurrentSong\s*=\s*\(\)\s*=>\s*{\s*const\s+playlistSongElements\s*=\s*document\.querySelectorAll\(('|")\.playlist-song\1\);?\s*\};?/)
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-string-and-array-methods-by-building-a-music-player/65548f747a4cdafd186948d1.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-string-and-array-methods-by-building-a-music-player/65548f747a4cdafd186948d1.md
index ac48dbe60b7..e6d00adf2a0 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-string-and-array-methods-by-building-a-music-player/65548f747a4cdafd186948d1.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-string-and-array-methods-by-building-a-music-player/65548f747a4cdafd186948d1.md
@@ -16,7 +16,7 @@ Use `getElementById()` to get the `id` of the currently playing song, then use t
 You should not modify the existing `highlightCurrentSong` function and its content.
 
 ```js
-assert.match(code, /const\s+highlightCurrentSong\s*=\s*\(\)\s*=>\s*\s{\s*const\s*playlistSongElements\s*=\s*document\.querySelectorAll\(('|")\.playlist-song\1\);?\s*/)
+assert.match(code, /const\s+highlightCurrentSong\s*=\s*\(\)\s*=>\s*\s{\s*const\s+playlistSongElements\s*=\s*document\.querySelectorAll\(('|")\.playlist-song\1\);?\s*/)
 ```
 
 You should use `document.getElementById()` and pass in `` `song-${userData?.currentSong?.id}` ``.
@@ -28,7 +28,7 @@ assert.match(code, /document\.getElementById\(\s*`song-\$\{userData\?\.currentSo
 You should assign your `getElementById()` to a `songToHighlight` constant.
 
 ```js
-assert.match(code, /const\s*songToHighlight\s*=\s*document\.getElementById\(\s*`song-\$\{userData\?\.currentSong\?\.id\}`\s*\);?\s*\};?/)
+assert.match(code, /const\s+songToHighlight\s*=\s*document\.getElementById\(\s*`song-\$\{userData\?\.currentSong\?\.id\}`\s*\);?\s*\};?/)
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-string-and-array-methods-by-building-a-music-player/656073a2b98232c8aca72267.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-string-and-array-methods-by-building-a-music-player/656073a2b98232c8aca72267.md
index a0c60c4ebf8..9001b44a2fa 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-string-and-array-methods-by-building-a-music-player/656073a2b98232c8aca72267.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-string-and-array-methods-by-building-a-music-player/656073a2b98232c8aca72267.md
@@ -14,7 +14,7 @@ To handle the current song's information and track its playback time, create a `
 You should not modify the existing `userData` object and its content.
 
 ```js
-assert.match(code, /let\s*userData\s*=\s*\{\s*songs:\s*\[\.\.\.allSongs\],?\s*/);
+assert.match(code, /let\s+userData\s*=\s*\{\s*songs:\s*\[\.\.\.allSongs\],?\s*/);
 ```
 
 Your `userData` object should have a `currentSong` key set to `null`.
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-fetch-and-promises-by-building-an-fcc-authors-page/641da5462576784453146ec2.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-fetch-and-promises-by-building-an-fcc-authors-page/641da5462576784453146ec2.md
index 60a5b23e01e..31ead53b64b 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-fetch-and-promises-by-building-an-fcc-authors-page/641da5462576784453146ec2.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-fetch-and-promises-by-building-an-fcc-authors-page/641da5462576784453146ec2.md
@@ -30,7 +30,7 @@ assert.match(code, /let\s+startingIndex\s*=\s*0;?/)
 You should use `let` to declare a variable named `endingIndex`.
 
 ```js
-assert.match(code, /let\s*endingIndex/)
+assert.match(code, /let\s+endingIndex/)
 ```
 
 You should set your `endingIndex` variable to `8`.
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-fetch-and-promises-by-building-an-fcc-authors-page/641da895fb7ec648a5bdf19c.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-fetch-and-promises-by-building-an-fcc-authors-page/641da895fb7ec648a5bdf19c.md
index 2cb8442eb5d..b5528d4221a 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-fetch-and-promises-by-building-an-fcc-authors-page/641da895fb7ec648a5bdf19c.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-fetch-and-promises-by-building-an-fcc-authors-page/641da895fb7ec648a5bdf19c.md
@@ -16,7 +16,7 @@ Create a `fetchMoreAuthors` function with the arrow function syntax. Don't put a
 You should use `const` to create a `fetchMoreAuthors` function.
 
 ```js
-assert.match(code, /const fetchMoreAuthors\s*=\s*/)
+assert.match(code, /const\s+fetchMoreAuthors\s*=\s*/)
 ```
 
 `fetchMoreAuthors` should be a function.
@@ -28,19 +28,19 @@ assert.isFunction(fetchMoreAuthors)
 Your `fetchMoreAuthors` function should not take any parameter.
 
 ```js
-assert.match(code, /const fetchMoreAuthors\s*=\s*\(\s*\)\s*/)
+assert.match(code, /const\s+fetchMoreAuthors\s*=\s*\(\s*\)\s*/)
 ```
 
 Your `fetchMoreAuthors` function should use arrow syntax.
 
 ```js
-assert.match(code, /const fetchMoreAuthors\s*=\s*\(\)\s*=>\s*/)
+assert.match(code, /const\s+fetchMoreAuthors\s*=\s*\(\)\s*=>\s*/)
 ```
 
 Your `fetchMoreAuthors` function should be empty.
 
 ```js
-assert.match(code, /const fetchMoreAuthors\s*=\s*\(\)\s*=>\s*\{\s*\}/)
+assert.match(code, /const\s+fetchMoreAuthors\s*=\s*\(\)\s*=>\s*\{\s*\}/)
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/63c8b0187cceff21c8389543.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/63c8b0187cceff21c8389543.md
index 510279401f5..6231b6314df 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/63c8b0187cceff21c8389543.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/63c8b0187cceff21c8389543.md
@@ -42,7 +42,7 @@ Your `currVal` assignment should be in your `for` loop.
 ```js
 // another hack, because the loop protection injects stuff
 const getCaloriesString = code.split("function getCaloriesFromInputs")[1];
-assert.match(getCaloriesString, /for\s*\(\s*let\s+i\s*=\s*0\s*;\s*i\s*<\s*list\.length\s*;\s*i\s*\+\+\s*\)\s*\{\s*const|let\s*currVal\s*=\s*list\[i\]\.value/g);
+assert.match(getCaloriesString, /for\s*\(\s*let\s+i\s*=\s*0\s*;\s*i\s*<\s*list\.length\s*;\s*i\s*\+\+\s*\)\s*\{\s*(const|let)\s+currVal\s*=\s*list\[i\]\.value/g);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/642dccb78549c9285835ebc2.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/642dccb78549c9285835ebc2.md
index ddfb960df45..45d09238166 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/642dccb78549c9285835ebc2.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/642dccb78549c9285835ebc2.md
@@ -24,37 +24,37 @@ Declare a nested `createLabel` function using arrow syntax. It should take a `na
 You should declare a `createLabel` variable in your `onload` function.
 
 ```js
-assert.match(code, /window\.onload\s*=\s*\(\s*\)\s*=>\s*\{\s*(?:const\s+container\s*=\s*document\.getElementById\(\s*('|"|`)container\1\s*\);?)?\s*(?:let|var|const)\s*createLabel/);
+assert.match(code, /window\.onload\s*=\s*\(\s*\)\s*=>\s*\{\s*(?:const\s+container\s*=\s*document\.getElementById\(\s*('|"|`)container\1\s*\);?)?\s*(?:let|var|const)\s+createLabel/);
 ```
 
 Your `createLabel` variable should be declared after your `container` variable.
 
 ```js
-assert.match(code, /window\.onload\s*=\s*\(\s*\)\s*=>\s*\{\s*const\s+container\s*=\s*document\.getElementById\(\s*('|"|`)container\1\s*\);?\s*(?:let|var|const)\s*createLabel/);
+assert.match(code, /window\.onload\s*=\s*\(\s*\)\s*=>\s*\{\s*const\s+container\s*=\s*document\.getElementById\(\s*('|"|`)container\1\s*\);?\s*(?:let|var|const)\s+createLabel/);
 ```
 
 Your `createLabel` variable should be declared with `const`.
 
 ```js
-assert.match(code, /window\.onload\s*=\s*\(\s*\)\s*=>\s*\{\s*const\s+container\s*=\s*document\.getElementById\(\s*('|"|`)container\1\s*\);?\s*const\s*createLabel/);
+assert.match(code, /window\.onload\s*=\s*\(\s*\)\s*=>\s*\{\s*const\s+container\s*=\s*document\.getElementById\(\s*('|"|`)container\1\s*\);?\s*const\s+createLabel/);
 ```
 
 Your `createLabel` variable should be an arrow function.
 
 ```js
-assert.match(code, /window\.onload\s*=\s*\(\s*\)\s*=>\s*\{\s*const\s+container\s*=\s*document\.getElementById\(\s*('|"|`)container\1\s*\);?\s*const\s*createLabel\s*=\s*(\(.*\)|[^\s()]+)\s*=>/);
+assert.match(code, /window\.onload\s*=\s*\(\s*\)\s*=>\s*\{\s*const\s+container\s*=\s*document\.getElementById\(\s*('|"|`)container\1\s*\);?\s*const\s+createLabel\s*=\s*(\(.*\)|[^\s()]+)\s*=>/);
 ```
 
 Your `createLabel` function should have a `name` parameter.
 
 ```js
-assert.match(code, /window\.onload\s*=\s*\(\s*\)\s*=>\s*\{\s*const\s+container\s*=\s*document\.getElementById\(\s*('|"|`)container\1\s*\);?\s*const\s*createLabel\s*=\s*(\(\s*name\s*\)|name)\s*=>/);
+assert.match(code, /window\.onload\s*=\s*\(\s*\)\s*=>\s*\{\s*const\s+container\s*=\s*document\.getElementById\(\s*('|"|`)container\1\s*\);?\s*const\s+createLabel\s*=\s*(\(\s*name\s*\)|name)\s*=>/);
 ```
 
 Your `createLabel` function should be empty.
 
 ```js
-assert.match(code, /window\.onload\s*=\s*\(\s*\)\s*=>\s*\{\s*const\s+container\s*=\s*document\.getElementById\(\s*('|"|`)container\1\s*\);?\s*const\s*createLabel\s*=\s*(\(\s*name\s*\)|name)\s*=>\s*\{\s*\}/);
+assert.match(code, /window\.onload\s*=\s*\(\s*\)\s*=>\s*\{\s*const\s+container\s*=\s*document\.getElementById\(\s*('|"|`)container\1\s*\);?\s*const\s+createLabel\s*=\s*(\(\s*name\s*\)|name)\s*=>\s*\{\s*\}/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/642ddfdea4200e313f80a4b6.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/642ddfdea4200e313f80a4b6.md
index 77b8875bb96..a1c4fb0d7e7 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/642ddfdea4200e313f80a4b6.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/642ddfdea4200e313f80a4b6.md
@@ -16,13 +16,13 @@ In your `createLabel` function, declare a `label` variable and assign it a new `
 You should declare a `label` variable in your `createLabel` function.
 
 ```js
-assert.match(code, /const\s*createLabel\s*=\s*\(?\s*name\s*\)?\s*=>\s*\{\s*(?:const|let|var)\s*label/);
+assert.match(code, /const\s+createLabel\s*=\s*\(?\s*name\s*\)?\s*=>\s*\{\s*(?:const|let|var)\s+label/);
 ```
 
 Your `label` variable should be declared with `const`.
 
 ```js
-assert.match(code, /const\s*createLabel\s*=\s*\(?\s*name\s*\)?\s*=>\s*\{\s*const\s*label/);
+assert.match(code, /const\s+createLabel\s*=\s*\(?\s*name\s*\)?\s*=>\s*\{\s*const\s+label/);
 ```
 
 You should use the `.createElement()` method of the `document` object.
@@ -40,7 +40,7 @@ assert.match(code, /document\.createElement\(\s*('|"|`)div\1\s*\)/);
 You should assign your new `div` element to `label`.
 
 ```js
-assert.match(code, /const\s*label\s*=\s*document\.createElement\(\s*('|"|`)div\1\s*\)/)
+assert.match(code, /const\s+label\s*=\s*document\.createElement\(\s*('|"|`)div\1\s*\)/)
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/642df32c0c2db433d8b46d46.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/642df32c0c2db433d8b46d46.md
index cd4fbb784c5..ea747b729e2 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/642df32c0c2db433d8b46d46.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/642df32c0c2db433d8b46d46.md
@@ -26,7 +26,7 @@ assert.match(code, /container\.appendChild\(\s*label\s*\)/);
 You should append `label` after setting the attributes.
 
 ```js
-assert.match(code, /const\s*label\s*=\s*document.createElement\(\s*('|"|`)div\1\s*\);?\s*label\.className\s*=\s*('|"|`)label\2;?\s*label\.textContent\s*=\s*name;?\s*container\.appendChild\(\s*label\s*\)/);
+assert.match(code, /const\s+label\s*=\s*document.createElement\(\s*('|"|`)div\1\s*\);?\s*label\.className\s*=\s*('|"|`)label\2;?\s*label\.textContent\s*=\s*name;?\s*container\.appendChild\(\s*label\s*\)/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/642df9df4b5216350de7b0d2.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/642df9df4b5216350de7b0d2.md
index 6b97233445b..3855efef9cb 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/642df9df4b5216350de7b0d2.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/642df9df4b5216350de7b0d2.md
@@ -16,13 +16,13 @@ Declare an empty `range` function which takes a `start` and `end` parameter. Use
 You should declare a `range` variable.
 
 ```js
-assert.match(code, /(?:let|var|const)\s*range/);
+assert.match(code, /(?:let|var|const)\s+range/);
 ```
 
 You should use `const` to declare your `range` variable.
 
 ```js
-assert.match(code, /const\s*range/);
+assert.match(code, /const\s+range/);
 ```
 
 Your `range` variable should be a function.
@@ -34,37 +34,37 @@ assert.isFunction(range);
 Your `range` function should use arrow syntax.
 
 ```js
-assert.match(code, /const\s*range\s*=\s*\(.*\)\s*=>/);
+assert.match(code, /const\s+range\s*=\s*\(.*\)\s*=>/);
 ```
 
 Your `range` function should take a `start` parameter first.
 
 ```js
-assert.match(code, /const\s*range\s*=\s*\(\s*start/)
+assert.match(code, /const\s+range\s*=\s*\(\s*start/)
 ```
 
 Your `range` function should take an `end` parameter second.
 
 ```js
-assert.match(code, /const\s*range\s*=\s*\(\s*start\s*,\s*end\s*\)/);
+assert.match(code, /const\s+range\s*=\s*\(\s*start\s*,\s*end\s*\)/);
 ```
 
 Your `range` function should use an implicit return. Remember that this means you will not use curly brackets.
 
 ```js
-assert.notMatch(code, /const\s*range\s*=\s*\(\s*start\s*,\s*end\s*\)\s*=>\s*{/);
+assert.notMatch(code, /const\s+range\s*=\s*\(\s*start\s*,\s*end\s*\)\s*=>\s*{/);
 ```
 
 Your `range` function should use the `Array()` constructor. Primitive constructors do not need the `new` keyword.
 
 ```js
-assert.match(code, /const\s*range\s*=\s*\(\s*start\s*,\s*end\s*\)\s*=>\s*Array\(/);
+assert.match(code, /const\s+range\s*=\s*\(\s*start\s*,\s*end\s*\)\s*=>\s*Array\(/);
 ```
 
 You should not pass anything to the `Array()` constructor.
 
 ```js
-assert.match(code, /const\s*range\s*=\s*\(\s*start\s*,\s*end\s*\)\s*=>\s*Array\(\s*\)/);
+assert.match(code, /const\s+range\s*=\s*\(\s*start\s*,\s*end\s*\)\s*=>\s*Array\(\s*\)/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/642dfb07e7fa6736251541c8.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/642dfb07e7fa6736251541c8.md
index 34b11e9b256..c1fb0af3500 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/642dfb07e7fa6736251541c8.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/642dfb07e7fa6736251541c8.md
@@ -28,7 +28,7 @@ assert.match(code, /end\s*-\s*start\s*\+\s*1/);
 You should pass your calculation to the `Array()` constructor.
 
 ```js
-assert.match(code, /const\s*range\s*=\s*\(\s*start\s*,\s*end\s*\)\s*=>\s*Array\(\s*end\s*-\s*start\s*\+\s*1\s*\)/);
+assert.match(code, /const\s+range\s*=\s*\(\s*start\s*,\s*end\s*\)\s*=>\s*Array\(\s*end\s*-\s*start\s*\+\s*1\s*\)/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/642e0011c45c893845842058.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/642e0011c45c893845842058.md
index 2698f6ad2b8..af2a47c2af8 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/642e0011c45c893845842058.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/642e0011c45c893845842058.md
@@ -22,13 +22,13 @@ assert.match(code, /\.fill\(/);
 You should call the `.fill()` method on your `Array()` constructor.
 
 ```js
-assert.match(code, /const\s*range\s*=\s*\(\s*start\s*,\s*end\s*\)\s*=>\s*Array\(\s*end\s*-\s*start\s*\+\s*1\s*\)\.fill\(/);
+assert.match(code, /const\s+range\s*=\s*\(\s*start\s*,\s*end\s*\)\s*=>\s*Array\(\s*end\s*-\s*start\s*\+\s*1\s*\)\.fill\(/);
 ```
 
 You should pass `start` to the `.fill()` method.
 
 ```js
-assert.match(code, /const\s*range\s*=\s*\(\s*start\s*,\s*end\s*\)\s*=>\s*Array\(\s*end\s*-\s*start\s*\+\s*1\s*\).fill\(\s*start\s*\)/);
+assert.match(code, /const\s+range\s*=\s*\(\s*start\s*,\s*end\s*\)\s*=>\s*Array\(\s*end\s*-\s*start\s*\+\s*1\s*\).fill\(\s*start\s*\)/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/642e004130958c3975aa3a4a.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/642e004130958c3975aa3a4a.md
index aa9a9db2ec4..2c69829a98b 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/642e004130958c3975aa3a4a.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/642e004130958c3975aa3a4a.md
@@ -22,37 +22,37 @@ assert.match(code, /\.map\(/);
 You should chain the `.map()` method to your `.fill()` method.
 
 ```js
-assert.match(code, /const\s*range\s*=\s*\(\s*start\s*,\s*end\s*\)\s*=>\s*Array\(\s*end\s*-\s*start\s*\+\s*1\s*\).fill\(\s*start\s*\)\.map\(/);
+assert.match(code, /const\s+range\s*=\s*\(\s*start\s*,\s*end\s*\)\s*=>\s*Array\(\s*end\s*-\s*start\s*\+\s*1\s*\).fill\(\s*start\s*\)\.map\(/);
 ```
 
 You should pass a callback function to `.map()` using arrow syntax.
 
 ```js
-assert.match(code, /const\s*range\s*=\s*\(\s*start\s*,\s*end\s*\)\s*=>\s*Array\(\s*end\s*-\s*start\s*\+\s*1\s*\).fill\(\s*start\s*\)\.map\(\s*\(.*\)\s*=>/);
+assert.match(code, /const\s+range\s*=\s*\(\s*start\s*,\s*end\s*\)\s*=>\s*Array\(\s*end\s*-\s*start\s*\+\s*1\s*\).fill\(\s*start\s*\)\.map\(\s*\(.*\)\s*=>/);
 ```
 
 Your `.map()` callback should take `element` as the first parameter.
 
 ```js
-assert.match(code, /const\s*range\s*=\s*\(\s*start\s*,\s*end\s*\)\s*=>\s*Array\(\s*end\s*-\s*start\s*\+\s*1\s*\).fill\(\s*start\s*\)\.map\(\s*\(\s*element/);
+assert.match(code, /const\s+range\s*=\s*\(\s*start\s*,\s*end\s*\)\s*=>\s*Array\(\s*end\s*-\s*start\s*\+\s*1\s*\).fill\(\s*start\s*\)\.map\(\s*\(\s*element/);
 ```
 
 Your `.map()` callback should take `index` as the second parameter.
 
 ```js
-assert.match(code, /const\s*range\s*=\s*\(\s*start\s*,\s*end\s*\)\s*=>\s*Array\(\s*end\s*-\s*start\s*\+\s*1\s*\).fill\(\s*start\s*\)\.map\(\s*\(\s*element\s*,\s*index\s*\)\s*=>/);
+assert.match(code, /const\s+range\s*=\s*\(\s*start\s*,\s*end\s*\)\s*=>\s*Array\(\s*end\s*-\s*start\s*\+\s*1\s*\).fill\(\s*start\s*\)\.map\(\s*\(\s*element\s*,\s*index\s*\)\s*=>/);
 ```
 
 Your `.map()` callback should use an implicit return.
 
 ```js
-assert.notMatch(code, /const\s*range\s*=\s*\(\s*start\s*,\s*end\s*\)\s*=>\s*Array\(\s*end\s*-\s*start\s*\+\s*1\s*\).fill\(\s*start\s*\)\.map\(\s*\(\s*element\s*,\s*index\s*\)\s*=>\s*\{/);
+assert.notMatch(code, /const\s+range\s*=\s*\(\s*start\s*,\s*end\s*\)\s*=>\s*Array\(\s*end\s*-\s*start\s*\+\s*1\s*\).fill\(\s*start\s*\)\.map\(\s*\(\s*element\s*,\s*index\s*\)\s*=>\s*\{/);
 ```
 
 Your `.map()` callback should implicitly return the sum of `element` and `index`.
 
 ```js
-assert.match(code, /const\s*range\s*=\s*\(\s*start\s*,\s*end\s*\)\s*=>\s*Array\(\s*end\s*-\s*start\s*\+\s*1\s*\).fill\(\s*start\s*\)\.map\(\s*\(\s*element\s*,\s*index\s*\)\s*=>\s*(element\s*\+\s*index|index\s*\+\s*element)/);
+assert.match(code, /const\s+range\s*=\s*\(\s*start\s*,\s*end\s*\)\s*=>\s*Array\(\s*end\s*-\s*start\s*\+\s*1\s*\).fill\(\s*start\s*\)\.map\(\s*\(\s*element\s*,\s*index\s*\)\s*=>\s*(element\s*\+\s*index|index\s*\+\s*element)/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/642e02be7845f13b014cd2b0.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/642e02be7845f13b014cd2b0.md
index c280f9d99ad..cb8c0416918 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/642e02be7845f13b014cd2b0.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/642e02be7845f13b014cd2b0.md
@@ -16,13 +16,13 @@ Declare a `charRange` function using `const` and arrow syntax. It should take a
 You should declare a `charRange` variable.
 
 ```js
-assert.match(code, /(?:let|const|var)\s*charRange/);
+assert.match(code, /(?:let|const|var)\s+charRange/);
 ```
 
 Your `charRange` variable should be declared with `const`.
 
 ```js
-assert.match(code, /const\s*charRange/);
+assert.match(code, /const\s+charRange/);
 ```
 
 Your `charRange` variable should be a function.
@@ -34,37 +34,37 @@ assert.isFunction(charRange);
 Your `charRange` function should use arrow syntax.
 
 ```js
-assert.match(code, /const\s*charRange\s*=\s*\(.*\)\s*=>/);
+assert.match(code, /const\s+charRange\s*=\s*\(.*\)\s*=>/);
 ```
 
 Your `charRange` function should take `start` as the first parameter.
 
 ```js
-assert.match(code, /const\s*charRange\s*=\s*\(\s*start/);
+assert.match(code, /const\s+charRange\s*=\s*\(\s*start/);
 ```
 
 Your `charRange` function should take `end` as the second parameter.
 
 ```js
-assert.match(code, /const\s*charRange\s*=\s*\(\s*start\s*,\s*end\s*\)/);
+assert.match(code, /const\s+charRange\s*=\s*\(\s*start\s*,\s*end\s*\)/);
 ```
 
 Your `charRange` function should use an implicit return.
 
 ```js
-assert.notMatch(code, /const\s*charRange\s*=\s*\(\s*start\s*,\s*end\s*\)\s*=>\s*{/);
+assert.notMatch(code, /const\s+charRange\s*=\s*\(\s*start\s*,\s*end\s*\)\s*=>\s*{/);
 ```
 
 Your `charRange` function should call your `range` function.
 
 ```js
-assert.match(code, /const\s*charRange\s*=\s*\(\s*start\s*,\s*end\s*\)\s*=>\s*range\(/);
+assert.match(code, /const\s+charRange\s*=\s*\(\s*start\s*,\s*end\s*\)\s*=>\s*range\(/);
 ```
 
 You should pass `start` and `end` as the arguments to your `range` call.
 
 ```js
-assert.match(code, /const\s*charRange\s*=\s*\(\s*start\s*,\s*end\s*\)\s*=>\s*range\(\s*start\s*,\s*end\s*\)/);
+assert.match(code, /const\s+charRange\s*=\s*\(\s*start\s*,\s*end\s*\)\s*=>\s*range\(\s*start\s*,\s*end\s*\)/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/6434552bcc0a951a0a99df3b.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/6434552bcc0a951a0a99df3b.md
index e72b47c2c9d..66b6eea4fc2 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/6434552bcc0a951a0a99df3b.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/6434552bcc0a951a0a99df3b.md
@@ -46,7 +46,7 @@ assert.match(code, /end\.charCodeAt\(\s*0\s*\)/);
 You should use the `.charCodeAt()` methods directly in your `range` call.
 
 ```js
-assert.match(code, /const\s*charRange\s*=\s*\(\s*start\s*,\s*end\s*\)\s*=>\s*range\(\s*start\.charCodeAt\(\s*0\s*\)\s*,\s*end\.charCodeAt\(\s*0\s*\)\s*\)/);
+assert.match(code, /const\s+charRange\s*=\s*\(\s*start\s*,\s*end\s*\)\s*=>\s*range\(\s*start\.charCodeAt\(\s*0\s*\)\s*,\s*end\.charCodeAt\(\s*0\s*\)\s*\)/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/64345b810a6e481e5e326849.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/64345b810a6e481e5e326849.md
index d390cbf0809..276907fe638 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/64345b810a6e481e5e326849.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/64345b810a6e481e5e326849.md
@@ -22,37 +22,37 @@ assert.lengthOf(code.match(/\.map\(/g), 2);
 You should chain the `.map()` method to your `range` call.
 
 ```js
-assert.match(code, /const\s*charRange\s*=\s*\(\s*start\s*,\s*end\s*\)\s*=>\s*range\(\s*start\.charCodeAt\(\s*0\s*\)\s*,\s*end\.charCodeAt\(\s*0\s*\)\s*\)\.map\(/);
+assert.match(code, /const\s+charRange\s*=\s*\(\s*start\s*,\s*end\s*\)\s*=>\s*range\(\s*start\.charCodeAt\(\s*0\s*\)\s*,\s*end\.charCodeAt\(\s*0\s*\)\s*\)\.map\(/);
 ```
 
 You should use arrow syntax for the `.map()` callback.
 
 ```js
-assert.match(code, /const\s*charRange\s*=\s*\(\s*start\s*,\s*end\s*\)\s*=>\s*range\(\s*start\.charCodeAt\(\s*0\s*\)\s*,\s*end\.charCodeAt\(\s*0\s*\)\s*\).map\(\s*(\(.*\)|[^\s()]+)\s*=>/);
+assert.match(code, /const\s+charRange\s*=\s*\(\s*start\s*,\s*end\s*\)\s*=>\s*range\(\s*start\.charCodeAt\(\s*0\s*\)\s*,\s*end\.charCodeAt\(\s*0\s*\)\s*\).map\(\s*(\(.*\)|[^\s()]+)\s*=>/);
 ```
 
 Your `.map()` callback should take a `code` parameter.
 
 ```js
-assert.match(code, /const\s*charRange\s*=\s*\(\s*start\s*,\s*end\s*\)\s*=>\s*range\(\s*start\.charCodeAt\(\s*0\s*\)\s*,\s*end\.charCodeAt\(\s*0\s*\)\s*\).map\(\s*(\(\s*code\s*\)|code)\s*=>/);
+assert.match(code, /const\s+charRange\s*=\s*\(\s*start\s*,\s*end\s*\)\s*=>\s*range\(\s*start\.charCodeAt\(\s*0\s*\)\s*,\s*end\.charCodeAt\(\s*0\s*\)\s*\).map\(\s*(\(\s*code\s*\)|code)\s*=>/);
 ```
 
 Your `.map()` callback should use an implicit return.
 
 ```js
-assert.notMatch(code, /const\s*charRange\s*=\s*\(\s*start\s*,\s*end\s*\)\s*=>\s*range\(\s*start\.charCodeAt\(\s*0\s*\)\s*,\s*end\.charCodeAt\(\s*0\s*\)\s*\).map\(\s*(\(\s*code\s*\)|code)\s*=>\s*\{/);
+assert.notMatch(code, /const\s+charRange\s*=\s*\(\s*start\s*,\s*end\s*\)\s*=>\s*range\(\s*start\.charCodeAt\(\s*0\s*\)\s*,\s*end\.charCodeAt\(\s*0\s*\)\s*\).map\(\s*(\(\s*code\s*\)|code)\s*=>\s*\{/);
 ```
 
 Your `.map()` callback should return the result of calling `String.fromCharCode()`.
 
 ```js
-assert.match(code, /const\s*charRange\s*=\s*\(\s*start\s*,\s*end\s*\)\s*=>\s*range\(\s*start\.charCodeAt\(\s*0\s*\)\s*,\s*end\.charCodeAt\(\s*0\s*\)\s*\).map\(\s*(\(\s*code\s*\)|code)\s*=>\s*String\.fromCharCode\(/);
+assert.match(code, /const\s+charRange\s*=\s*\(\s*start\s*,\s*end\s*\)\s*=>\s*range\(\s*start\.charCodeAt\(\s*0\s*\)\s*,\s*end\.charCodeAt\(\s*0\s*\)\s*\).map\(\s*(\(\s*code\s*\)|code)\s*=>\s*String\.fromCharCode\(/);
 ```
 
 You should pass the variable `code` to `String.fromCharCode()`.
 
 ```js
-assert.match(code, /const\s*charRange\s*=\s*\(\s*start\s*,\s*end\s*\)\s*=>\s*range\(\s*start\.charCodeAt\(\s*0\s*\)\s*,\s*end\.charCodeAt\(\s*0\s*\)\s*\).map\(\s*(\(\s*code\s*\)|code)\s*=>\s*String\.fromCharCode\(\s*code\s*\)/);
+assert.match(code, /const\s+charRange\s*=\s*\(\s*start\s*,\s*end\s*\)\s*=>\s*range\(\s*start\.charCodeAt\(\s*0\s*\)\s*,\s*end\.charCodeAt\(\s*0\s*\)\s*\).map\(\s*(\(\s*code\s*\)|code)\s*=>\s*String\.fromCharCode\(\s*code\s*\)/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/64345c560591891f64976f7a.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/64345c560591891f64976f7a.md
index 51d5bc5f178..3d8b6472ea9 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/64345c560591891f64976f7a.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/64345c560591891f64976f7a.md
@@ -14,31 +14,31 @@ Now that your helper functions are complete, back in your `onload` event handler
 You should declare a `letters` variable.
 
 ```js
-assert.match(code, /(?:let|const|var)\s*letters/);
+assert.match(code, /(?:let|const|var)\s+letters/);
 ```
 
 You should use `const` to declare your `letters` variable.
 
 ```js
-assert.match(code, /const\s*letters/);
+assert.match(code, /const\s+letters/);
 ```
 
 You should assign a `charRange()` call to your `letters` variable.
 
 ```js
-assert.match(code, /const\s*letters\s*=\s*charRange\(/);
+assert.match(code, /const\s+letters\s*=\s*charRange\(/);
 ```
 
 You should pass `A` as the first argument to your `charRange()` call.
 
 ```js
-assert.match(code, /const\s*letters\s*=\s*charRange\(\s*('|"|`)A\1/);
+assert.match(code, /const\s+letters\s*=\s*charRange\(\s*('|"|`)A\1/);
 ```
 
 You should pass `J` as the second argument to your `charRange()` call.
 
 ```js
-assert.match(code, /const\s*letters\s*=\s*charRange\(\s*('|"|`)A\1\s*,\s*('|"|`)J\2\s*\)/)
+assert.match(code, /const\s+letters\s*=\s*charRange\(\s*('|"|`)A\1\s*,\s*('|"|`)J\2\s*\)/)
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/643475e13dc727231acd0f72.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/643475e13dc727231acd0f72.md
index f6179caf013..cf515d8e50c 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/643475e13dc727231acd0f72.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/643475e13dc727231acd0f72.md
@@ -16,13 +16,13 @@ For accessibility, set the `aria-label` attribute to the same value as the `id`
 You should declare an `input` variable.
 
 ```js
-assert.match(code, /(?:var|let|const)\s*input/)
+assert.match(code, /(?:var|let|const)\s+input/)
 ```
 
 You should use `const` to declare your `input` variable.
 
 ```js
-assert.match(code, /const\s*input/)
+assert.match(code, /const\s+input/)
 ```
 
 You should call the `.createElement()` method of the `document` object.
@@ -40,7 +40,7 @@ assert.match(code, /document\.createElement\(\s*('|"|`)input\1\s*\)/)
 You should assign your new `input` element to your `input` variable.
 
 ```js
-assert.match(code, /const\s*input\s*=\s*document\.createElement\(\s*('|"|`)input\1\s*\)/)
+assert.match(code, /const\s+input\s*=\s*document\.createElement\(\s*('|"|`)input\1\s*\)/)
 ```
 
 You should access the `type` property of your `input` element.
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/643498755d54c6279ba09078.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/643498755d54c6279ba09078.md
index 513efdfb322..ced31b234ab 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/643498755d54c6279ba09078.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/643498755d54c6279ba09078.md
@@ -16,13 +16,13 @@ Declare a `sum` function that takes a `nums` parameter, which will be an array o
 You should declare a `sum` variable.
 
 ```js
-assert.match(code, /(?:let|const|var)\s*sum/);
+assert.match(code, /(?:let|const|var)\s+sum/);
 ```
 
 You should use `const` to declare your `sum` variable.
 
 ```js
-assert.match(code, /const\s*sum/);
+assert.match(code, /const\s+sum/);
 ```
 
 Your `sum` variable should be a function.
@@ -34,25 +34,25 @@ assert.isFunction(sum);
 Your `sum` function should use arrow syntax.
 
 ```js
-assert.match(code, /const\s*sum\s*=\(?.*\)?\s*=>/);
+assert.match(code, /const\s+sum\s*=\(?.*\)?\s*=>/);
 ```
 
 Your `sum` function should have a `nums` parameter.
 
 ```js
-assert.match(code, /const\s*sum\s*=\s*\(?\s*nums\s*\)?\s*=>/);
+assert.match(code, /const\s+sum\s*=\s*\(?\s*nums\s*\)?\s*=>/);
 ```
 
 Your `sum` function should use an implicit return.
 
 ```js
-assert.notMatch(code, /const\s*sum\s*=\s*\(?\s*nums\s*\)?\s*=>\s*{/);
+assert.notMatch(code, /const\s+sum\s*=\s*\(?\s*nums\s*\)?\s*=>\s*{/);
 ```
 
 Your `sum` function should return the result of calling `.reduce()` on `nums`.
 
 ```js
-assert.match(code, /const\s*sum\s*=\s*\(?\s*nums\s*\)?\s*=>\s*nums\.reduce\(/);
+assert.match(code, /const\s+sum\s*=\s*\(?\s*nums\s*\)?\s*=>\s*nums\.reduce\(/);
 ```
 
 Your `sum` function should return the sum of all numbers in `nums`.
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/6437124c4c03dd4c8fb35d56.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/6437124c4c03dd4c8fb35d56.md
index 6a8554f25f1..96428869cec 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/6437124c4c03dd4c8fb35d56.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/6437124c4c03dd4c8fb35d56.md
@@ -14,13 +14,13 @@ Declare an `isEven` function, which takes a `num` parameter and returns `true` i
 You should declare an `isEven` variable.
 
 ```js
-assert.match(code, /(?:let|const|var)\s*isEven/);
+assert.match(code, /(?:let|const|var)\s+isEven/);
 ```
 
 You should use `const` to declare your `isEven` variable.
 
 ```js
-assert.match(code, /const\s*isEven/);
+assert.match(code, /const\s+isEven/);
 ```
 
 Your `isEven` variable should be a function.
@@ -32,13 +32,13 @@ assert.isFunction(isEven);
 Your `isEven` function should use arrow syntax.
 
 ```js
-assert.match(code, /const\s*isEven\s*=\s*\(?.*\)?\s*=>/);
+assert.match(code, /const\s+isEven\s*=\s*\(?.*\)?\s*=>/);
 ```
 
 Your `isEven` function should have a `num` parameter.
 
 ```js
-assert.match(code, /const\s*isEven\s*=\s*\(?\s*num\s*\)?\s*=>/);
+assert.match(code, /const\s+isEven\s*=\s*\(?\s*num\s*\)?\s*=>/);
 ```
 
 Your `isEven` function should use the modulo operator `%`.
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/64496df724dd3716a71fe971.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/64496df724dd3716a71fe971.md
index 229b7eefc0e..39138fd1ee1 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/64496df724dd3716a71fe971.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/64496df724dd3716a71fe971.md
@@ -68,7 +68,7 @@ assert.equal(spreadsheetFunctions?.median, median);
 You should use destructuring syntax to assign your properties.
 
 ```js
-const objectText = code.replace(/.*const\s*spreadsheetFunctions\s*=\s*\{([^}]*)}.*/s, "$1");
+const objectText = code.replace(/.*const\s+spreadsheetFunctions\s*=\s*\{([^}]*)}.*/s, "$1");
 assert.include(objectText, "sum");
 assert.include(objectText, "average");
 assert.include(objectText, "median");
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/64497e764135bd24b7960dd3.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/64497e764135bd24b7960dd3.md
index 010d9566ada..89ddc313bd5 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/64497e764135bd24b7960dd3.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/64497e764135bd24b7960dd3.md
@@ -16,13 +16,13 @@ Declare an `evalFormula` arrow function which takes the parameters `x` and `cell
 You should declare an `evalFormula` variable.
 
 ```js
-assert.match(code, /(?:let|const|var)\s*evalFormula/);
+assert.match(code, /(?:let|const|var)\s+evalFormula/);
 ```
 
 You should use `const` to declare your `evalFormula` variable.
 
 ```js
-assert.match(code, /const\s*evalFormula/);
+assert.match(code, /const\s+evalFormula/);
 ```
 
 Your `evalFormula` variable should be a function.
@@ -34,25 +34,25 @@ assert.isFunction(evalFormula);
 Your `evalFormula` function should use arrow syntax.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(/);
 ```
 
 Your `evalFormula` function should have `x` as the first parameter.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x/);
 ```
 
 Your `evalFormula` function should have `cells` as the second parameter.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>/);
 ```
 
 Your `evalFormula` function should be empty.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*}/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*}/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/6449842c6f6c84261075e4c9.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/6449842c6f6c84261075e4c9.md
index 935aa053795..81ab6e5bbc5 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/6449842c6f6c84261075e4c9.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/6449842c6f6c84261075e4c9.md
@@ -16,55 +16,55 @@ Your `idToText` function should return the result of calling `.find()` on the `c
 You should declare an `idToText` variable in your `evalFormula` function.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*(?:const|let|var)\s+idToText/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*(?:const|let|var)\s+idToText/);
 ```
 
 You should use `const` to declare your `idToText` variable.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText/);
 ```
 
 Your `idToText` variable should be an arrow function.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?.*\)?\s*=>/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?.*\)?\s*=>/);
 ```
 
 Your `idToText` function should have an `id` parameter.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>/);
 ```
 
 You should assign `idToText` the result of calling the `.find()` method on your `cells` array.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(/);
 ```
 
 You should pass a callback function to your `.find()` method. Use arrow syntax.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?.*\)?\s*=>/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?.*\)?\s*=>/);
 ```
 
 Your callback function should have a `cell` parameter.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>/);
 ```
 
 Your callback function should use an implicit return.
 
 ```js
-assert.notMatch(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*\{/);
+assert.notMatch(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*\{/);
 ```
 
 Your callback function should return whether `cell.id` is strictly equal to `id`.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/64498473a17adc26ef0ecc2d.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/64498473a17adc26ef0ecc2d.md
index dd56044e660..bdc57a917fd 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/64498473a17adc26ef0ecc2d.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/64498473a17adc26ef0ecc2d.md
@@ -14,7 +14,7 @@ Your `idToText` function currently returns an `input` element. Update it to retu
 You should return the `value` property of the return value of the `.find()` method.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/6449849b78f43527be1e8a98.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/6449849b78f43527be1e8a98.md
index e27060dab09..a8f40427a15 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/6449849b78f43527be1e8a98.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/6449849b78f43527be1e8a98.md
@@ -16,38 +16,38 @@ Start by declaring a `rangeRegex` variable and assign it a regular expression th
 You should declare a `rangeRegex` variable after your `idToText` function.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*(?:var|let|const)\s+rangeRegex/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*(?:var|let|const)\s+rangeRegex/);
 ```
 
 You should use `const` to declare your `rangeRegex` variable.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex/);
 ```
 
 Your `rangeRegex` variable should be a regular expression.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/.*\/;?/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/.*\/;?/);
 ```
 
 Your `rangeRegex` should use a capture group.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(.*\)\/;?/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(.*\)\/;?/);
 ```
 
 Your `rangeRegex` should use a character class in the capture group.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[.*\]\)\/;?/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[.*\]\)\/;?/);
 ```
 
 Your `rangeRegex` should use a character class to match `A` through `J`.
 
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\/;?/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\/;?/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/64498542cab69128ab24e4de.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/64498542cab69128ab24e4de.md
index 399ef9c1f26..58e0f7066ac 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/64498542cab69128ab24e4de.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/64498542cab69128ab24e4de.md
@@ -16,37 +16,37 @@ Add a capture group after your letter capture group. Your new capture group shou
 You should add a second capture group to your `rangeRegex`.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(.*\)\/;?/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(.*\)\/;?/);
 ```
 
 Your second capture group should have a character class.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[.*\]\??\)\/;?/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[.*\]\??\)\/;?/);
 ```
 
 Your second capture group should have two character classes.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[.*\]\[.*\]\??\)\/;?/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[.*\]\[.*\]\??\)\/;?/);
 ```
 
 Your first new character class should match the digits `1` through `9`.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[.*\]\??\)\/;?/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[.*\]\??\)\/;?/);
 ```
 
 Your second new character class should match the digits `0` through `9`.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\??\)\/;?/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\??\)\/;?/);
 ```
 
 Your second new character class should be optional.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/;?/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/;?/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/6449860d84c9e22cbd7b497c.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/6449860d84c9e22cbd7b497c.md
index d5dfb0a845e..9d7678ef457 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/6449860d84c9e22cbd7b497c.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/6449860d84c9e22cbd7b497c.md
@@ -14,7 +14,7 @@ Ranges are separated by a colon. After your two capture groups, your `rangeRegex
 You should add a colon after your second capture group.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\/;?/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\/;?/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/6449863f592af72d9be0959e.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/6449863f592af72d9be0959e.md
index b9aeec38582..e136c011b6d 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/6449863f592af72d9be0959e.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/6449863f592af72d9be0959e.md
@@ -16,31 +16,31 @@ Copy your two existing capture groups and paste them after the colon.
 You should add a third capture group to your `rangeRegex`, after the colon.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(.*\)/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(.*\)/);
 ```
 
 Your third capture group should use a character class.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[.*\]\)/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[.*\]\)/);
 ```
 
 Your third capture group should match the characters `A` through `J`.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)/);
 ```
 
 You should add a fourth capture group to your `rangeRegex`.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(.*\)/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(.*\)/);
 ```
 
 Your fourth capture group should match one or two digits.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/6449874d5191562eb3313b3f.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/6449874d5191562eb3313b3f.md
index da43051e048..0bbc0559291 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/6449874d5191562eb3313b3f.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/6449874d5191562eb3313b3f.md
@@ -14,19 +14,19 @@ Finally, make your `rangeRegex` global and case-insensitive.
 Your `rangeRegex` should be case-insensitive.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/g?i/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/g?i/);
 ```
 
 Your `rangeRegex` should be global.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/i?g/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/i?g/);
 ```
 
 Your `rangeRegex` should be both global and case-insensitive.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig)/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig)/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/6449876e7aae0d2f8257a497.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/6449876e7aae0d2f8257a497.md
index 2498ffda527..80d079ebcc0 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/6449876e7aae0d2f8257a497.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/6449876e7aae0d2f8257a497.md
@@ -16,55 +16,55 @@ To be safe, parse `num1` and `num2` into integers as you pass them into `range`.
 You should declare a `rangeFromString` variable after your `rangeRegex`.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*(?:var|let|const)\s+rangeFromString/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*(?:var|let|const)\s+rangeFromString/);
 ```
 
 You should use `const` to declare your `rangeFromString` variable.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString/);
 ```
 
 Your `rangeFromString` variable should be an arrow function.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(.*\)\s*=>/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(.*\)\s*=>/);
 ```
 
 Your `rangeFromString` function should have `num1` as the first parameter.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1/);
 ```
 
 Your `rangeFromString` function should have `num2` as the second parameter.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>/);
 ```
 
 Your `rangeFromString` function should use an implicit return.
 
 ```js
-assert.notMatch(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*\{/);
+assert.notMatch(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*\{/);
 ```
 
 Your `rangeFromString` function should return the result of calling your `range` function.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(/);
 ```
 
 You should call `parseInt` with `num1` as an argument and pass the result to the `range` call.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)/);
 ```
 
 You should call `parseInt` with `num2` as the argument and pass the result to the `range` call.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\)/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\)/);
 ```
 
 # --seed--
@@ -131,7 +131,7 @@ const charRange = (start, end) => range(start.charCodeAt(0), end.charCodeAt(0)).
 const evalFormula = (x, cells) => {
   const idToText = id => cells.find(cell => cell.id === id).value;
   const rangeRegex = /([A-J])([1-9][0-9]?):([A-J])([1-9][0-9]?)/gi;
-  
+
 }
 --fcc-editable-region--
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/64498b085028fc30a58bb6a7.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/64498b085028fc30a58bb6a7.md
index 0cec37570a3..f091b421e16 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/64498b085028fc30a58bb6a7.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/64498b085028fc30a58bb6a7.md
@@ -14,31 +14,31 @@ Declare a function `elemValue` which takes a `num` parameter. The function shoul
 You should declare an `elemValue` variable after your `rangeFromString()` function.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*(?:var|let|const)\s+elemValue/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*(?:var|let|const)\s+elemValue/);
 ```
 
 You should use `const` to declare your `elemValue` variable.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue/);
 ```
 
 Your `elemValue` variable should be an arrow function.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*(\(.*\)|[^\s()]+)\s*=>/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*(\(.*\)|[^\s()]+)\s*=>/);
 ```
 
 Your `elemValue` function should have `num` as the only parameter.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*(\(\s*num\s*\)|num)\s*=>/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*(\(\s*num\s*\)|num)\s*=>/);
 ```
 
 Your `elemValue` function should be empty.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*(\(\s*num\s*\)|num)\s*=>\s*\{\s*\}/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*(\(\s*num\s*\)|num)\s*=>\s*\{\s*\}/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d0889c6ff4baa46ac1c50.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d0889c6ff4baa46ac1c50.md
index 33b61bd61c8..138dd646f57 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d0889c6ff4baa46ac1c50.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d0889c6ff4baa46ac1c50.md
@@ -16,37 +16,37 @@ Then, return your `inner` function.
 You should declare an `inner` variable.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\{\s*(?:var|let|const)\s+inner/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\{\s*(?:var|let|const)\s+inner/);
 ```
 
 You should use `const` to declare your `inner` variable.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\{\s*const\s+inner/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\{\s*const\s+inner/);
 ```
 
 Your `inner` variable should be an arrow function.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\{\s*const\s+inner\s*=\s*(\(.*\)|[^\s()]+)\s*=>/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\{\s*const\s+inner\s*=\s*(\(.*\)|[^\s()]+)\s*=>/);
 ```
 
 Your `inner` function should have `character` as the only parameter.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\{\s*const\s+inner\s*=\s*(\(\s*character\s*\)|character)\s*=>/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\{\s*const\s+inner\s*=\s*(\(\s*character\s*\)|character)\s*=>/);
 ```
 
 Your `inner` function should be empty.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\{\s*const\s+inner\s*=\s*(\(\s*character\s*\)|character)\s*=>\s*\{\s*\}/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\{\s*const\s+inner\s*=\s*(\(\s*character\s*\)|character)\s*=>\s*\{\s*\}/);
 ```
 
 You should explicitly return your `inner` function.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\{\s*const\s+inner\s*=\s*(\(\s*character\s*\)|character)\s*=>\s*\{\s*\};?\s*return\s+inner/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\{\s*const\s+inner\s*=\s*(\(\s*character\s*\)|character)\s*=>\s*\{\s*\};?\s*return\s+inner/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d09a07241aaab1e777080.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d09a07241aaab1e777080.md
index c9e137251bb..5e9553c4f08 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d09a07241aaab1e777080.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d09a07241aaab1e777080.md
@@ -14,19 +14,19 @@ In your `inner` function, return the result of calling `idToText` with `characte
 Your `inner` function should use an explicit return.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\{\s*const\s+inner\s*=\s*(\(\s*character\s*\)|character)\s*=>\s*\{\s*return/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\{\s*const\s+inner\s*=\s*(\(\s*character\s*\)|character)\s*=>\s*\{\s*return/);
 ```
 
 Your `inner` function should return the result of calling your `idToText` function.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\{\s*const\s+inner\s*=\s*(\(\s*character\s*\)|character)\s*=>\s*\{\s*return\s+idToText\(/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\{\s*const\s+inner\s*=\s*(\(\s*character\s*\)|character)\s*=>\s*\{\s*return\s+idToText\(/);
 ```
 
 You should pass `character + num` as the argument to your `idToText` function.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\{\s*const\s+inner\s*=\s*(\(\s*character\s*\)|character)\s*=>\s*\{\s*return\s+idToText\(\s*character\s*\+\s*num\s*\);?\s*};?\s*return\s+inner/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\{\s*const\s+inner\s*=\s*(\(\s*character\s*\)|character)\s*=>\s*\{\s*return\s+idToText\(\s*character\s*\+\s*num\s*\);?\s*};?\s*return\s+inner/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d0a022da7bcabf3e3aca3.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d0a022da7bcabf3e3aca3.md
index 41b66e92dd5..f6f2e9f04f8 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d0a022da7bcabf3e3aca3.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d0a022da7bcabf3e3aca3.md
@@ -25,31 +25,31 @@ You'll get some more practice with this. Declare a function called `addCharacter
 You should declare an `addCharacters` variable.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\{\s*const\s+inner\s*=\s*\(?\s*character\s*\)?\s*=>\s*\{\s*return\s+idToText\(\s*character\s*\+\s*num\s*\);?\s*};?\s*return\s+inner;?\s*\}\s*(?:var|let|const)\s+addCharacters/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\{\s*const\s+inner\s*=\s*\(?\s*character\s*\)?\s*=>\s*\{\s*return\s+idToText\(\s*character\s*\+\s*num\s*\);?\s*};?\s*return\s+inner;?\s*\}\s*(?:var|let|const)\s+addCharacters/);
 ```
 
 You should use `const` to declare your `addCharacters` variable.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\{\s*const\s+inner\s*=\s*\(?\s*character\s*\)?\s*=>\s*\{\s*return\s+idToText\(\s*character\s*\+\s*num\s*\);?\s*};?\s*return\s+inner;?\s*\}\s*const\s+addCharacters/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\{\s*const\s+inner\s*=\s*\(?\s*character\s*\)?\s*=>\s*\{\s*return\s+idToText\(\s*character\s*\+\s*num\s*\);?\s*};?\s*return\s+inner;?\s*\}\s*const\s+addCharacters/);
 ```
 
 Your `addCharacters` variable should be an arrow function.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\{\s*const\s+inner\s*=\s*\(?\s*character\s*\)?\s*=>\s*\{\s*return\s+idToText\(\s*character\s*\+\s*num\s*\);?\s*};?\s*return\s+inner;?\s*\}\s*const\s+addCharacters\s*=\s*(\(.*\)|[^\s()]+)\s*=>/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\{\s*const\s+inner\s*=\s*\(?\s*character\s*\)?\s*=>\s*\{\s*return\s+idToText\(\s*character\s*\+\s*num\s*\);?\s*};?\s*return\s+inner;?\s*\}\s*const\s+addCharacters\s*=\s*(\(.*\)|[^\s()]+)\s*=>/);
 ```
 
 Your `addCharacters` function should not use an implicit return.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\{\s*const\s+inner\s*=\s*\(?\s*character\s*\)?\s*=>\s*\{\s*return\s+idToText\(\s*character\s*\+\s*num\s*\);?\s*};?\s*return\s+inner;?\s*\}\s*const\s+addCharacters\s*=\s*(\(.*\)|[^\s()]+)\s*=>\s*\{/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\{\s*const\s+inner\s*=\s*\(?\s*character\s*\)?\s*=>\s*\{\s*return\s+idToText\(\s*character\s*\+\s*num\s*\);?\s*};?\s*return\s+inner;?\s*\}\s*const\s+addCharacters\s*=\s*(\(.*\)|[^\s()]+)\s*=>\s*\{/);
 ```
 
 Your `addCharacters` function should have a `character1` parameter.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\{\s*const\s+inner\s*=\s*\(?\s*character\s*\)?\s*=>\s*\{\s*return\s+idToText\(\s*character\s*\+\s*num\s*\);?\s*};?\s*return\s+inner;?\s*\}\s*const\s+addCharacters\s*=\s*(\(\s*character1\s*\)|character1)\s*=>/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\{\s*const\s+inner\s*=\s*\(?\s*character\s*\)?\s*=>\s*\{\s*return\s+idToText\(\s*character\s*\+\s*num\s*\);?\s*};?\s*return\s+inner;?\s*\}\s*const\s+addCharacters\s*=\s*(\(\s*character1\s*\)|character1)\s*=>/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d0d20108440acc95a6b32.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d0d20108440acc95a6b32.md
index f30d6381d42..80bdecd96af 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d0d20108440acc95a6b32.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d0d20108440acc95a6b32.md
@@ -20,19 +20,19 @@ const curry = soup => veggies => {};
 Your `addCharacters` function should use an implicit return.
 
 ```js
-assert.notMatch(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\{\s*const\s+inner\s*=\s*\(?\s*character\s*\)?\s*=>\s*\{\s*return\s+idToText\(\s*character\s*\+\s*num\s*\);?\s*};?\s*return\s+inner;?\s*\}\s*const\s+addCharacters\s*=\s*(\(\s*character1\s*\)|characters1)\s*=>\s*\{/);
+assert.notMatch(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\{\s*const\s+inner\s*=\s*\(?\s*character\s*\)?\s*=>\s*\{\s*return\s+idToText\(\s*character\s*\+\s*num\s*\);?\s*};?\s*return\s+inner;?\s*\}\s*const\s+addCharacters\s*=\s*(\(\s*character1\s*\)|characters1)\s*=>\s*\{/);
 ```
 
 Your `elemValue` function should return an arrow function which has a `character2` parameter.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\{\s*const\s+inner\s*=\s*\(?\s*character\s*\)?\s*=>\s*\{\s*return\s+idToText\(\s*character\s*\+\s*num\s*\);?\s*};?\s*return\s+inner;?\s*\}\s*const\s+addCharacters\s*=\s*(\(\s*character1\s*\)|character1)\s*=>\s*(\(\s*character2\s*\)|character2)\s*=>/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\{\s*const\s+inner\s*=\s*\(?\s*character\s*\)?\s*=>\s*\{\s*return\s+idToText\(\s*character\s*\+\s*num\s*\);?\s*};?\s*return\s+inner;?\s*\}\s*const\s+addCharacters\s*=\s*(\(\s*character1\s*\)|character1)\s*=>\s*(\(\s*character2\s*\)|character2)\s*=>/);
 ```
 
 Your inner arrow function should be empty.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\{\s*const\s+inner\s*=\s*\(?\s*character\s*\)?\s*=>\s*\{\s*return\s+idToText\(\s*character\s*\+\s*num\s*\);?\s*};?\s*return\s+inner;?\s*\}\s*const\s+addCharacters\s*=\s*(\(\s*character1\s*\)|character1)\s*=>\s*(\(\s*character2\s*\)|character2)\s*=>\s*\{\s*\}/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\{\s*const\s+inner\s*=\s*\(?\s*character\s*\)?\s*=>\s*\{\s*return\s+idToText\(\s*character\s*\+\s*num\s*\);?\s*};?\s*return\s+inner;?\s*\}\s*const\s+addCharacters\s*=\s*(\(\s*character1\s*\)|character1)\s*=>\s*(\(\s*character2\s*\)|character2)\s*=>\s*\{\s*\}/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d0db5175974ad8633b71c.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d0db5175974ad8633b71c.md
index a317ff2c3bf..cff8296a62c 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d0db5175974ad8633b71c.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d0db5175974ad8633b71c.md
@@ -14,13 +14,13 @@ Your inner functions can also return a function. Using the same arrow syntax, up
 Your inner arrow function should return another arrow function with a `num` parameter.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\{\s*const\s+inner\s*=\s*\(?\s*character\s*\)?\s*=>\s*\{\s*return\s+idToText\(\s*character\s*\+\s*num\s*\);?\s*};?\s*return\s+inner;?\s*\}\s*const\s+addCharacters\s*=\s*(\(\s*character1\s*\)|character1)\s*=>\s*(\(\s*character2\s*\)|character2)\s*=>\s*(\(\s*num\s*\)|num)\s*=>/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\{\s*const\s+inner\s*=\s*\(?\s*character\s*\)?\s*=>\s*\{\s*return\s+idToText\(\s*character\s*\+\s*num\s*\);?\s*};?\s*return\s+inner;?\s*\}\s*const\s+addCharacters\s*=\s*(\(\s*character1\s*\)|character1)\s*=>\s*(\(\s*character2\s*\)|character2)\s*=>\s*(\(\s*num\s*\)|num)\s*=>/);
 ```
 
 Your inner-most arrow function should be empty.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\{\s*const\s+inner\s*=\s*\(?\s*character\s*\)?\s*=>\s*\{\s*return\s+idToText\(\s*character\s*\+\s*num\s*\);?\s*};?\s*return\s+inner;?\s*\}\s*const\s+addCharacters\s*=\s*(\(\s*character1\s*\)|character1)\s*=>\s*(\(\s*character2\s*\)|character2)\s*=>\s*(\(\s*num\s*\)|num)\s*=>\s*\{\s*\}/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\{\s*const\s+inner\s*=\s*\(?\s*character\s*\)?\s*=>\s*\{\s*return\s+idToText\(\s*character\s*\+\s*num\s*\);?\s*};?\s*return\s+inner;?\s*\}\s*const\s+addCharacters\s*=\s*(\(\s*character1\s*\)|character1)\s*=>\s*(\(\s*character2\s*\)|character2)\s*=>\s*(\(\s*num\s*\)|num)\s*=>\s*\{\s*\}/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d0e4636e14eae2bb3b992.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d0e4636e14eae2bb3b992.md
index 21900752966..01b5ba54ade 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d0e4636e14eae2bb3b992.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d0e4636e14eae2bb3b992.md
@@ -14,25 +14,25 @@ Now update your innermost function in the `addCharacters` chain to implicitly re
 Your innermost function should use an implicit return.
 
 ```js
-assert.notMatch(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\{\s*const\s+inner\s*=\s*\(?\s*character\s*\)?\s*=>\s*\{\s*return\s+idToText\(\s*character\s*\+\s*num\s*\);?\s*};?\s*return\s+inner;?\s*\}\s*const\s+addCharacters\s*=\s*(\(\s*character1\s*\)|character1)\s*=>\s*(\(\s*character2\s*\)|character2)\s*=>\s*(\(\s*num\s*\)|num)\s*=>\s*\{/);
+assert.notMatch(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\{\s*const\s+inner\s*=\s*\(?\s*character\s*\)?\s*=>\s*\{\s*return\s+idToText\(\s*character\s*\+\s*num\s*\);?\s*};?\s*return\s+inner;?\s*\}\s*const\s+addCharacters\s*=\s*(\(\s*character1\s*\)|character1)\s*=>\s*(\(\s*character2\s*\)|character2)\s*=>\s*(\(\s*num\s*\)|num)\s*=>\s*\{/);
 ```
 
 Your innermost function should return the result of calling `charRange()`.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\{\s*const\s+inner\s*=\s*\(?\s*character\s*\)?\s*=>\s*\{\s*return\s+idToText\(\s*character\s*\+\s*num\s*\);?\s*};?\s*return\s+inner;?\s*\}\s*const\s+addCharacters\s*=\s*(\(\s*character1\s*\)|character1)\s*=>\s*(\(\s*character2\s*\)|character2)\s*=>\s*(\(\s*num\s*\)|num)\s*=>\s*charRange\(/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\{\s*const\s+inner\s*=\s*\(?\s*character\s*\)?\s*=>\s*\{\s*return\s+idToText\(\s*character\s*\+\s*num\s*\);?\s*};?\s*return\s+inner;?\s*\}\s*const\s+addCharacters\s*=\s*(\(\s*character1\s*\)|character1)\s*=>\s*(\(\s*character2\s*\)|character2)\s*=>\s*(\(\s*num\s*\)|num)\s*=>\s*charRange\(/);
 ```
 
 You should pass `character1` as the first argument to your `charRange()` call.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\{\s*const\s+inner\s*=\s*\(?\s*character\s*\)?\s*=>\s*\{\s*return\s+idToText\(\s*character\s*\+\s*num\s*\);?\s*};?\s*return\s+inner;?\s*\}\s*const\s+addCharacters\s*=\s*(\(\s*character1\s*\)|character1)\s*=>\s*(\(\s*character2\s*\)|character2)\s*=>\s*(\(\s*num\s*\)|num)\s*=>\s*charRange\(\s*character1/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\{\s*const\s+inner\s*=\s*\(?\s*character\s*\)?\s*=>\s*\{\s*return\s+idToText\(\s*character\s*\+\s*num\s*\);?\s*};?\s*return\s+inner;?\s*\}\s*const\s+addCharacters\s*=\s*(\(\s*character1\s*\)|character1)\s*=>\s*(\(\s*character2\s*\)|character2)\s*=>\s*(\(\s*num\s*\)|num)\s*=>\s*charRange\(\s*character1/);
 ```
 
 You should pass `character2` as the second argument to your `charRange()` call.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\{\s*const\s+inner\s*=\s*\(?\s*character\s*\)?\s*=>\s*\{\s*return\s+idToText\(\s*character\s*\+\s*num\s*\);?\s*};?\s*return\s+inner;?\s*\}\s*const\s+addCharacters\s*=\s*(\(\s*character1\s*\)|character1)\s*=>\s*(\(\s*character2\s*\)|character2)\s*=>\s*(\(\s*num\s*\)|num)\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\{\s*const\s+inner\s*=\s*\(?\s*character\s*\)?\s*=>\s*\{\s*return\s+idToText\(\s*character\s*\+\s*num\s*\);?\s*};?\s*return\s+inner;?\s*\}\s*const\s+addCharacters\s*=\s*(\(\s*character1\s*\)|character1)\s*=>\s*(\(\s*character2\s*\)|character2)\s*=>\s*(\(\s*num\s*\)|num)\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d1980018efaaec2b1c28b.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d1980018efaaec2b1c28b.md
index 030b0feb3ad..99a2c62b86f 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d1980018efaaec2b1c28b.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d1980018efaaec2b1c28b.md
@@ -14,25 +14,25 @@ Use the same syntax as your `addCharacters` function to update your `elemValue`
 Your `elemValue` function should use an implicit return.
 
 ```js
-assert.notMatch(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*(\(\s*num\s*\)|num)\s*=>\s*\{/);
+assert.notMatch(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*(\(\s*num\s*\)|num)\s*=>\s*\{/);
 ```
 
 Your `elemValue` function should implicitly return an arrow function with a `character` parameter.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*(\(\s*num\s*\)|num)\s*=>\s*(\(\s*character\s*\)|character)\s*=>/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*(\(\s*num\s*\)|num)\s*=>\s*(\(\s*character\s*\)|character)\s*=>/);
 ```
 
 Your inner arrow function should use an implicit return.
 
 ```js
-assert.notMatch(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*(\(\s*num\s*\)|num)\s*=>\s*(\(\s*character\s*\)|character)\s*=>\s*\{/);
+assert.notMatch(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*(\(\s*num\s*\)|num)\s*=>\s*(\(\s*character\s*\)|character)\s*=>\s*\{/);
 ```
 
 Your inner arrow function should return the result of calling `idToText()` with `character + num` as the argument.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*(\(\s*num\s*\)|num)\s*=>\s*(\(\s*character\s*\)|character)\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\)/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*(\(\s*num\s*\)|num)\s*=>\s*(\(\s*character\s*\)|character)\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\)/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d19fc4705e4af65c3e688.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d19fc4705e4af65c3e688.md
index 9b47d29ec54..bc5b22d1fb4 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d19fc4705e4af65c3e688.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d19fc4705e4af65c3e688.md
@@ -14,13 +14,13 @@ Your `addCharacters` function ultimately returns a range of characters. You want
 You should chain `.map()` to your `charRange()` call.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(/);
 ```
 
 You should not pass anything to your `.map()` call.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*\)/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*\)/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d1b96dd7ea4b0061458bc.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d1b96dd7ea4b0061458bc.md
index f9bd1b72e0e..52f9c557011 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d1b96dd7ea4b0061458bc.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d1b96dd7ea4b0061458bc.md
@@ -24,13 +24,13 @@ Pass a reference to your `elemValue` function as the callback to your `.map()` m
 You should not call your `elemValue` function.
 
 ```js
-assert.notMatch(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*\)\s*\)/);
+assert.notMatch(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*\)\s*\)/);
 ```
 
 You should pass a reference to `elemValue` as the callback to your `.map()` method.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\s*\)/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\s*\)/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d1cadf0d96ab0b7e12da4.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d1cadf0d96ab0b7e12da4.md
index b051ce72f9d..0b857a3e256 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d1cadf0d96ab0b7e12da4.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d1cadf0d96ab0b7e12da4.md
@@ -16,13 +16,13 @@ Because `elemValue` returns a function, your `addChars` function ultimately retu
 You should call `elemValue()` in your `.map()` method.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(/);
 ```
 
 You should pass `num` to your `elemValue()` call.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\)/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\)/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d1d67f9261fb15a795588.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d1d67f9261fb15a795588.md
index 545bcf46f72..fbf8e85a58e 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d1d67f9261fb15a795588.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d1d67f9261fb15a795588.md
@@ -14,25 +14,25 @@ Declare a `rangeExpanded` variable and assign it the result of calling the `.rep
 You should declare a `rangeExpanded` variable.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*(?:let|var|const)\s+rangeExpanded/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*(?:let|var|const)\s+rangeExpanded/);
 ```
 
 You should use `const` to declare your `rangeExpanded` variable.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded/);
 ```
 
 You should assign the result of calling `.replace()` on `x` to your `rangeExpanded` variable.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(/);
 ```
 
 You should pass `rangeRegex` as the argument to `.replace()`.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*\)/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*\)/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d1e531042dfb24da1f032.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d1e531042dfb24da1f032.md
index b0f42c8b452..7b7d1f19807 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d1e531042dfb24da1f032.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d1e531042dfb24da1f032.md
@@ -16,13 +16,13 @@ The callback function takes a few parameters. The first is the matched string. P
 You should pass an arrow function as the second argument to your `.replace()` method.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*(\(.*\)|[^\s()]+)\s*=>\s*\{\s*\}\)/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*(\(.*\)|[^\s()]+)\s*=>\s*\{\s*\}\)/);
 ```
 
 Your arrow function should take a `match` parameter.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*(\(\s*match\s*\)|match)\s*=>\s*\{\s*\}\)/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*(\(\s*match\s*\)|match)\s*=>\s*\{\s*\}\)/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d3141790b3cb337dd611a.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d3141790b3cb337dd611a.md
index 4e3b6396f02..126938480b8 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d3141790b3cb337dd611a.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d3141790b3cb337dd611a.md
@@ -16,25 +16,25 @@ Give your callback function four more parameters to match those capture groups:
 Your callback function should have `char1` as the second parameter.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*match\s*,\s*char1/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*match\s*,\s*char1/);
 ```
 
 Your callback function should have `num1` as the third parameter.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*match\s*,\s*char1\s*,\s*num1/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*match\s*,\s*char1\s*,\s*num1/);
 ```
 
 Your callback function should have `char2` as the fourth parameter.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*match\s*,\s*char1\s*,\s*num1\s*,\s*char2/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*match\s*,\s*char1\s*,\s*num1\s*,\s*char2/);
 ```
 
 Your callback function should have `num2` as the fifth parameter.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d382c4d70ceb3dba1e830.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d382c4d70ceb3dba1e830.md
index 76c1950e846..61fd0d95ed3 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d382c4d70ceb3dba1e830.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d382c4d70ceb3dba1e830.md
@@ -14,25 +14,25 @@ Have your callback implicitly return the result of calling `rangeFromString()` w
 Your callback should use an implicit return.
 
 ```js
-assert.notMatch(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*\{/);
+assert.notMatch(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*\{/);
 ```
 
 Your callback should return the result of calling `rangeFromString()`.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(/);
 ```
 
 You should pass `num1` as the first argument to your `rangeFromString()` call.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1/);
 ```
 
 You should pass `num2` as the second argument to your `rangeFromString()` call.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d386a685620b49db4be76.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d386a685620b49db4be76.md
index ac10f535130..76aac232f63 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d386a685620b49db4be76.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d386a685620b49db4be76.md
@@ -14,13 +14,13 @@ Call the `.map()` method on your `rangeFromString()` call, passing a reference t
 You should call the `.map()` method on your `rangeFromString()` call.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(/);
 ```
 
 You should pass a reference to `addCharacters` as the callback to your `.map()` method.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\)/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\)/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d38c326f3c8b54023de38.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d38c326f3c8b54023de38.md
index 993479b22a3..9c0e9c37fcb 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d38c326f3c8b54023de38.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d38c326f3c8b54023de38.md
@@ -14,13 +14,13 @@ dashedName: step-57
 You should call your `addCharacters()` function in your `.map()` method.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*/);
 ```
 
 You should pass `char1` as the argument to your `addCharacters()` call.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\s*\)/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\s*\)/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d38f906b94cb5fe6ce7de.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d38f906b94cb5fe6ce7de.md
index 40d2718012d..9c9e17f61d7 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d38f906b94cb5fe6ce7de.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d38f906b94cb5fe6ce7de.md
@@ -20,13 +20,13 @@ Chain a function call to your `addCharacters(char1)` call, and pass `char2` as t
 You should chain a function call to your `addCharacters(char1)` call.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\(/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\(/);
 ```
 
 You should pass `char2` as the argument to your chained function call.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\(\s*char2\s*\)\s*\)/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\(\s*char2\s*\)\s*\)/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d3952f6af37b6a1c241c2.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d3952f6af37b6a1c241c2.md
index d2893b1aaaf..4152f3e33e2 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d3952f6af37b6a1c241c2.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d3952f6af37b6a1c241c2.md
@@ -18,7 +18,7 @@ Prefix your `match` parameter with an underscore.
 You should prefix your `match` parameter with an underscore.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*_match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\(\s*char2\s*\)\s*\)/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*_match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\(\s*char2\s*\)\s*\)/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d39c156fe94b7482c3ab6.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d39c156fe94b7482c3ab6.md
index 62616ff4ed8..8a0dcbe6389 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d39c156fe94b7482c3ab6.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d39c156fe94b7482c3ab6.md
@@ -14,49 +14,49 @@ Declare a variable `cellRegex` to match cell references. It should match a lette
 You should declare a `cellRegex` variable.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*_match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\(\s*char2\s*\)\s*\)\s*\);?\s*(?:var|let|const)\s+cellRegex/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*_match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\(\s*char2\s*\)\s*\)\s*\);?\s*(?:var|let|const)\s+cellRegex/);
 ```
 
 You should use `const` to declare your `cellRegex` variable.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*_match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\(\s*char2\s*\)\s*\)\s*\);?\s*const\s+cellRegex/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*_match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\(\s*char2\s*\)\s*\)\s*\);?\s*const\s+cellRegex/);
 ```
 
 You should assign a regular expression to your `cellRegex` variables.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*_match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\(\s*char2\s*\)\s*\)\s*\);?\s*const\s+cellRegex\s*=\s*\//);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*_match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\(\s*char2\s*\)\s*\)\s*\);?\s*const\s+cellRegex\s*=\s*\//);
 ```
 
 Your regular expression should use a character class to match the characters from `A` to `J`.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*_match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\(\s*char2\s*\)\s*\)\s*\);?\s*const\s+cellRegex\s*=\s*\/\[A-J\]/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*_match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\(\s*char2\s*\)\s*\)\s*\);?\s*const\s+cellRegex\s*=\s*\/\[A-J\]/);
 ```
 
 Your regular expression should use a character class to match the digits from `1` to `9`.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*_match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\(\s*char2\s*\)\s*\)\s*\);?\s*const\s+cellRegex\s*=\s*\/\[A-J\]\[1-9\]/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*_match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\(\s*char2\s*\)\s*\)\s*\);?\s*const\s+cellRegex\s*=\s*\/\[A-J\]\[1-9\]/);
 ```
 
 Your regular expression should use a character class to match the digits from `0` to `9`.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*_match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\(\s*char2\s*\)\s*\)\s*\);?\s*const\s+cellRegex\s*=\s*\/\[A-J\]\[1-9\]\[0-9\]/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*_match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\(\s*char2\s*\)\s*\)\s*\);?\s*const\s+cellRegex\s*=\s*\/\[A-J\]\[1-9\]\[0-9\]/);
 ```
 
 Your third character class should be optional.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*_match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\(\s*char2\s*\)\s*\)\s*\);?\s*const\s+cellRegex\s*=\s*\/\[A-J\]\[1-9\]\[0-9\]\?/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*_match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\(\s*char2\s*\)\s*\)\s*\);?\s*const\s+cellRegex\s*=\s*\/\[A-J\]\[1-9\]\[0-9\]\?/);
 ```
 
 Your regular expression should be case-insensitive and global.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*_match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\(\s*char2\s*\)\s*\)\s*\);?\s*const\s+cellRegex\s*=\s*\/\[A-J\]\[1-9\]\[0-9\]\?\/(gi|ig)/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*_match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\(\s*char2\s*\)\s*\)\s*\);?\s*const\s+cellRegex\s*=\s*\/\[A-J\]\[1-9\]\[0-9\]\?\/(gi|ig)/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d3b27cd3c56b875256301.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d3b27cd3c56b875256301.md
index 4ebcc512f18..6f36595bdf7 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d3b27cd3c56b875256301.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d3b27cd3c56b875256301.md
@@ -14,43 +14,43 @@ Declare a `cellExpanded` variable and assign it the value of calling `.replace()
 You should declare a `cellExpanded` variable.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*_match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\(\s*char2\s*\)\s*\)\s*\);?\s*const\s+cellRegex\s*=\s*\/\[A-J\]\[1-9\]\[0-9\]\?\/(gi|ig);?\s*(var|let|const)\s+cellExpanded/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*_match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\(\s*char2\s*\)\s*\)\s*\);?\s*const\s+cellRegex\s*=\s*\/\[A-J\]\[1-9\]\[0-9\]\?\/(gi|ig);?\s*(var|let|const)\s+cellExpanded/);
 ```
 
 You should use `const` to declare your `cellExpanded` variable.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*_match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\(\s*char2\s*\)\s*\)\s*\);?\s*const\s+cellRegex\s*=\s*\/\[A-J\]\[1-9\]\[0-9\]\?\/(gi|ig);?\s*const\s+cellExpanded/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*_match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\(\s*char2\s*\)\s*\)\s*\);?\s*const\s+cellRegex\s*=\s*\/\[A-J\]\[1-9\]\[0-9\]\?\/(gi|ig);?\s*const\s+cellExpanded/);
 ```
 
 You should assign `cellExpanded` the result of calling the `.replace()` method of `rangeExpanded`.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*_match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\(\s*char2\s*\)\s*\)\s*\);?\s*const\s+cellRegex\s*=\s*\/\[A-J\]\[1-9\]\[0-9\]\?\/(gi|ig);?\s*const\s+cellExpanded\s*=\s*rangeExpanded\.replace\(/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*_match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\(\s*char2\s*\)\s*\)\s*\);?\s*const\s+cellRegex\s*=\s*\/\[A-J\]\[1-9\]\[0-9\]\?\/(gi|ig);?\s*const\s+cellExpanded\s*=\s*rangeExpanded\.replace\(/);
 ```
 
 You should pass `cellRegex` as the first argument to your `.replace()` call.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*_match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\(\s*char2\s*\)\s*\)\s*\);?\s*const\s+cellRegex\s*=\s*\/\[A-J\]\[1-9\]\[0-9\]\?\/(gi|ig);?\s*const\s+cellExpanded\s*=\s*rangeExpanded\.replace\(\s*cellRegex/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*_match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\(\s*char2\s*\)\s*\)\s*\);?\s*const\s+cellRegex\s*=\s*\/\[A-J\]\[1-9\]\[0-9\]\?\/(gi|ig);?\s*const\s+cellExpanded\s*=\s*rangeExpanded\.replace\(\s*cellRegex/);
 ```
 
 You should pass a callback function using arrow syntax as the second argument to your `.replace()` call.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*_match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\(\s*char2\s*\)\s*\)\s*\);?\s*const\s+cellRegex\s*=\s*\/\[A-J\]\[1-9\]\[0-9\]\?\/(gi|ig);?\s*const\s+cellExpanded\s*=\s*rangeExpanded\.replace\(\s*cellRegex\s*,\s*(\(\s*(?:match)?\s*\)|match)\s*=>/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*_match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\(\s*char2\s*\)\s*\)\s*\);?\s*const\s+cellRegex\s*=\s*\/\[A-J\]\[1-9\]\[0-9\]\?\/(gi|ig);?\s*const\s+cellExpanded\s*=\s*rangeExpanded\.replace\(\s*cellRegex\s*,\s*(\(\s*(?:match)?\s*\)|match)\s*=>/);
 ```
 
 Your callback function should have a `match` parameter.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*_match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\(\s*char2\s*\)\s*\)\s*\);?\s*const\s+cellRegex\s*=\s*\/\[A-J\]\[1-9\]\[0-9\]\?\/(gi|ig);?\s*const\s+cellExpanded\s*=\s*rangeExpanded\.replace\(\s*cellRegex\s*,\s*(\(\s*match\s*\)|match)\s*=>/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*_match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\(\s*char2\s*\)\s*\)\s*\);?\s*const\s+cellRegex\s*=\s*\/\[A-J\]\[1-9\]\[0-9\]\?\/(gi|ig);?\s*const\s+cellExpanded\s*=\s*rangeExpanded\.replace\(\s*cellRegex\s*,\s*(\(\s*match\s*\)|match)\s*=>/);
 ```
 
 Your callback function should be empty.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*_match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\(\s*char2\s*\)\s*\)\s*\);?\s*const\s+cellRegex\s*=\s*\/\[A-J\]\[1-9\]\[0-9\]\?\/(gi|ig);?\s*const\s+cellExpanded\s*=\s*rangeExpanded\.replace\(\s*cellRegex\s*,\s*(\(\s*match\s*\)|match)\s*=>\s*\{\s*\}/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*_match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\(\s*char2\s*\)\s*\)\s*\);?\s*const\s+cellRegex\s*=\s*\/\[A-J\]\[1-9\]\[0-9\]\?\/(gi|ig);?\s*const\s+cellExpanded\s*=\s*rangeExpanded\.replace\(\s*cellRegex\s*,\s*(\(\s*match\s*\)|match)\s*=>\s*\{\s*\}/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d3bc75fe0c9b972da3323.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d3bc75fe0c9b972da3323.md
index 776f2c4bcf2..6f3e2a471bb 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d3bc75fe0c9b972da3323.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d3bc75fe0c9b972da3323.md
@@ -14,25 +14,25 @@ Update your callback function to return the result of calling `idToText()` with
 Your callback function should use an implicit return.
 
 ```js
-assert.notMatch(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*_match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\(\s*char2\s*\)\s*\)\s*\);?\s*const\s+cellRegex\s*=\s*\/\[A-J\]\[1-9\]\[0-9\]\?\/(gi|ig);?\s*const\s+cellExpanded\s*=\s*rangeExpanded\.replace\(\s*cellRegex\s*,\s*(\(\s*match\s*\)|match)\s*=>\s*\{/);
+assert.notMatch(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*_match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\(\s*char2\s*\)\s*\)\s*\);?\s*const\s+cellRegex\s*=\s*\/\[A-J\]\[1-9\]\[0-9\]\?\/(gi|ig);?\s*const\s+cellExpanded\s*=\s*rangeExpanded\.replace\(\s*cellRegex\s*,\s*(\(\s*match\s*\)|match)\s*=>\s*\{/);
 ```
 
 Your callback function should call `idToText()`.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*_match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\(\s*char2\s*\)\s*\)\s*\);?\s*const\s+cellRegex\s*=\s*\/\[A-J\]\[1-9\]\[0-9\]\?\/(gi|ig);?\s*const\s+cellExpanded\s*=\s*rangeExpanded\.replace\(\s*cellRegex\s*,\s*(\(\s*match\s*\)|match)\s*=>\s*idToText\(/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*_match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\(\s*char2\s*\)\s*\)\s*\);?\s*const\s+cellRegex\s*=\s*\/\[A-J\]\[1-9\]\[0-9\]\?\/(gi|ig);?\s*const\s+cellExpanded\s*=\s*rangeExpanded\.replace\(\s*cellRegex\s*,\s*(\(\s*match\s*\)|match)\s*=>\s*idToText\(/);
 ```
 
 You should pass `match` to your `idToText()` call.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*_match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\(\s*char2\s*\)\s*\)\s*\);?\s*const\s+cellRegex\s*=\s*\/\[A-J\]\[1-9\]\[0-9\]\?\/(gi|ig);?\s*const\s+cellExpanded\s*=\s*rangeExpanded\.replace\(\s*cellRegex\s*,\s*(\(\s*match\s*\)|match)\s*=>\s*idToText\(\s*match\s*/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*_match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\(\s*char2\s*\)\s*\)\s*\);?\s*const\s+cellRegex\s*=\s*\/\[A-J\]\[1-9\]\[0-9\]\?\/(gi|ig);?\s*const\s+cellExpanded\s*=\s*rangeExpanded\.replace\(\s*cellRegex\s*,\s*(\(\s*match\s*\)|match)\s*=>\s*idToText\(\s*match\s*/);
 ```
 
 You should call the `.toUpperCase()` method of `match` as you pass it to `idToText()`.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*_match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\(\s*char2\s*\)\s*\)\s*\);?\s*const\s+cellRegex\s*=\s*\/\[A-J\]\[1-9\]\[0-9\]\?\/(gi|ig);?\s*const\s+cellExpanded\s*=\s*rangeExpanded\.replace\(\s*cellRegex\s*,\s*(\(\s*match\s*\)|match)\s*=>\s*idToText\(\s*match\.toUpperCase\(\s*\)\s*\)/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*_match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\(\s*char2\s*\)\s*\)\s*\);?\s*const\s+cellRegex\s*=\s*\/\[A-J\]\[1-9\]\[0-9\]\?\/(gi|ig);?\s*const\s+cellExpanded\s*=\s*rangeExpanded\.replace\(\s*cellRegex\s*,\s*(\(\s*match\s*\)|match)\s*=>\s*idToText\(\s*match\.toUpperCase\(\s*\)\s*\)/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d46c03e7d02cecb30f021.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d46c03e7d02cecb30f021.md
index a01fe855aed..74d0e548a74 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d46c03e7d02cecb30f021.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d46c03e7d02cecb30f021.md
@@ -14,25 +14,25 @@ Now you can start applying your function parser to your `evalFormula` logic. Dec
 You should declare a `functionExpanded` variable.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*_match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\(\s*char2\s*\)\s*\)\s*\);?\s*const\s+cellRegex\s*=\s*\/\[A-J\]\[1-9\]\[0-9\]\?\/(gi|ig);?\s*const\s+cellExpanded\s*=\s*rangeExpanded\.replace\(\s*cellRegex\s*,\s*\(?\s*match\s*\)?\s*=>\s*idToText\(\s*match\.toUpperCase\(\)\s*\)\);?\s*(?:const|let|var)\s+functionExpanded\s*=\s*/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*_match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\(\s*char2\s*\)\s*\)\s*\);?\s*const\s+cellRegex\s*=\s*\/\[A-J\]\[1-9\]\[0-9\]\?\/(gi|ig);?\s*const\s+cellExpanded\s*=\s*rangeExpanded\.replace\(\s*cellRegex\s*,\s*\(?\s*match\s*\)?\s*=>\s*idToText\(\s*match\.toUpperCase\(\)\s*\)\);?\s*(?:const|let|var)\s+functionExpanded\s*=\s*/);
 ```
 
 You should use `const` to declare your `functionExpanded` variable.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*_match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\(\s*char2\s*\)\s*\)\s*\);?\s*const\s+cellRegex\s*=\s*\/\[A-J\]\[1-9\]\[0-9\]\?\/(gi|ig);?\s*const\s+cellExpanded\s*=\s*rangeExpanded\.replace\(\s*cellRegex\s*,\s*\(?\s*match\s*\)?\s*=>\s*idToText\(\s*match\.toUpperCase\(\)\s*\)\);?\s*const\s+functionExpanded\s*=\s*/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*_match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\(\s*char2\s*\)\s*\)\s*\);?\s*const\s+cellRegex\s*=\s*\/\[A-J\]\[1-9\]\[0-9\]\?\/(gi|ig);?\s*const\s+cellExpanded\s*=\s*rangeExpanded\.replace\(\s*cellRegex\s*,\s*\(?\s*match\s*\)?\s*=>\s*idToText\(\s*match\.toUpperCase\(\)\s*\)\);?\s*const\s+functionExpanded\s*=\s*/);
 ```
 
 You should assign the `functionExpanded` variable the result of calling your `applyFunction` function.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*_match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\(\s*char2\s*\)\s*\)\s*\);?\s*const\s+cellRegex\s*=\s*\/\[A-J\]\[1-9\]\[0-9\]\?\/(gi|ig);?\s*const\s+cellExpanded\s*=\s*rangeExpanded\.replace\(\s*cellRegex\s*,\s*\(?\s*match\s*\)?\s*=>\s*idToText\(\s*match\.toUpperCase\(\)\s*\)\);?\s*(?:const|let|var)\s+functionExpanded\s*=\s*applyFunction\(/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*_match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\(\s*char2\s*\)\s*\)\s*\);?\s*const\s+cellRegex\s*=\s*\/\[A-J\]\[1-9\]\[0-9\]\?\/(gi|ig);?\s*const\s+cellExpanded\s*=\s*rangeExpanded\.replace\(\s*cellRegex\s*,\s*\(?\s*match\s*\)?\s*=>\s*idToText\(\s*match\.toUpperCase\(\)\s*\)\);?\s*(?:const|let|var)\s+functionExpanded\s*=\s*applyFunction\(/);
 ```
 
 You should pass `cellExpanded` to your `applyFunction` call.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*_match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\(\s*char2\s*\)\s*\)\s*\);?\s*const\s+cellRegex\s*=\s*\/\[A-J\]\[1-9\]\[0-9\]\?\/(gi|ig);?\s*const\s+cellExpanded\s*=\s*rangeExpanded\.replace\(\s*cellRegex\s*,\s*\(?\s*match\s*\)?\s*=>\s*idToText\(\s*match\.toUpperCase\(\)\s*\)\);?\s*(?:const|let|var)\s+functionExpanded\s*=\s*applyFunction\(\s*cellExpanded\s*\);?/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*_match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\(\s*char2\s*\)\s*\)\s*\);?\s*const\s+cellRegex\s*=\s*\/\[A-J\]\[1-9\]\[0-9\]\?\/(gi|ig);?\s*const\s+cellExpanded\s*=\s*rangeExpanded\.replace\(\s*cellRegex\s*,\s*\(?\s*match\s*\)?\s*=>\s*idToText\(\s*match\.toUpperCase\(\)\s*\)\);?\s*(?:const|let|var)\s+functionExpanded\s*=\s*applyFunction\(\s*cellExpanded\s*\);?/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d4717a689e1cfa232e357.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d4717a689e1cfa232e357.md
index 8830b2edbd8..7f803a2ba8b 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d4717a689e1cfa232e357.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/646d4717a689e1cfa232e357.md
@@ -16,43 +16,43 @@ Use a ternary to check if `functionExpanded` is equal to the original string `x`
 Your `evalFormula` function should use the `return` keyword.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*_match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\(\s*char2\s*\)\s*\)\s*\);?\s*const\s+cellRegex\s*=\s*\/\[A-J\]\[1-9\]\[0-9\]\?\/(gi|ig);?\s*const\s+cellExpanded\s*=\s*rangeExpanded\.replace\(\s*cellRegex\s*,\s*\(?\s*match\s*\)?\s*=>\s*idToText\(\s*match\.toUpperCase\(\)\s*\)\);?\s*(?:const|let|var)\s+functionExpanded\s*=\s*applyFunction\(\s*cellExpanded\s*\);?\s*return/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*_match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\(\s*char2\s*\)\s*\)\s*\);?\s*const\s+cellRegex\s*=\s*\/\[A-J\]\[1-9\]\[0-9\]\?\/(gi|ig);?\s*const\s+cellExpanded\s*=\s*rangeExpanded\.replace\(\s*cellRegex\s*,\s*\(?\s*match\s*\)?\s*=>\s*idToText\(\s*match\.toUpperCase\(\)\s*\)\);?\s*(?:const|let|var)\s+functionExpanded\s*=\s*applyFunction\(\s*cellExpanded\s*\);?\s*return/);
 ```
 
 Your `return` statement should check if `functionExpanded` is equal to `x`.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*_match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\(\s*char2\s*\)\s*\)\s*\);?\s*const\s+cellRegex\s*=\s*\/\[A-J\]\[1-9\]\[0-9\]\?\/(gi|ig);?\s*const\s+cellExpanded\s*=\s*rangeExpanded\.replace\(\s*cellRegex\s*,\s*\(?\s*match\s*\)?\s*=>\s*idToText\(\s*match\.toUpperCase\(\)\s*\)\);?\s*(?:const|let|var)\s+functionExpanded\s*=\s*applyFunction\(\s*cellExpanded\s*\);?\s*return\s+(?:functionExpanded\s*===\s*x|x\s*===\s*functionExpanded)/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*_match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\(\s*char2\s*\)\s*\)\s*\);?\s*const\s+cellRegex\s*=\s*\/\[A-J\]\[1-9\]\[0-9\]\?\/(gi|ig);?\s*const\s+cellExpanded\s*=\s*rangeExpanded\.replace\(\s*cellRegex\s*,\s*\(?\s*match\s*\)?\s*=>\s*idToText\(\s*match\.toUpperCase\(\)\s*\)\);?\s*(?:const|let|var)\s+functionExpanded\s*=\s*applyFunction\(\s*cellExpanded\s*\);?\s*return\s+(?:functionExpanded\s*===\s*x|x\s*===\s*functionExpanded)/);
 ```
 
 Your `return` statement should use a ternary operator.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*_match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\(\s*char2\s*\)\s*\)\s*\);?\s*const\s+cellRegex\s*=\s*\/\[A-J\]\[1-9\]\[0-9\]\?\/(gi|ig);?\s*const\s+cellExpanded\s*=\s*rangeExpanded\.replace\(\s*cellRegex\s*,\s*\(?\s*match\s*\)?\s*=>\s*idToText\(\s*match\.toUpperCase\(\)\s*\)\);?\s*(?:const|let|var)\s+functionExpanded\s*=\s*applyFunction\(\s*cellExpanded\s*\);?\s*return\s+(?:functionExpanded\s*===\s*x|x\s*===\s*functionExpanded)\s*\?/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*_match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\(\s*char2\s*\)\s*\)\s*\);?\s*const\s+cellRegex\s*=\s*\/\[A-J\]\[1-9\]\[0-9\]\?\/(gi|ig);?\s*const\s+cellExpanded\s*=\s*rangeExpanded\.replace\(\s*cellRegex\s*,\s*\(?\s*match\s*\)?\s*=>\s*idToText\(\s*match\.toUpperCase\(\)\s*\)\);?\s*(?:const|let|var)\s+functionExpanded\s*=\s*applyFunction\(\s*cellExpanded\s*\);?\s*return\s+(?:functionExpanded\s*===\s*x|x\s*===\s*functionExpanded)\s*\?/);
 ```
 
 If the ternary condition is true, your `evalFormula()` should return `functionExpanded`.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*_match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\(\s*char2\s*\)\s*\)\s*\);?\s*const\s+cellRegex\s*=\s*\/\[A-J\]\[1-9\]\[0-9\]\?\/(gi|ig);?\s*const\s+cellExpanded\s*=\s*rangeExpanded\.replace\(\s*cellRegex\s*,\s*\(?\s*match\s*\)?\s*=>\s*idToText\(\s*match\.toUpperCase\(\)\s*\)\);?\s*(?:const|let|var)\s+functionExpanded\s*=\s*applyFunction\(\s*cellExpanded\s*\);?\s*return\s+(?:functionExpanded\s*===\s*x|x\s*===\s*functionExpanded)\s*\?\s*functionExpanded/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*_match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\(\s*char2\s*\)\s*\)\s*\);?\s*const\s+cellRegex\s*=\s*\/\[A-J\]\[1-9\]\[0-9\]\?\/(gi|ig);?\s*const\s+cellExpanded\s*=\s*rangeExpanded\.replace\(\s*cellRegex\s*,\s*\(?\s*match\s*\)?\s*=>\s*idToText\(\s*match\.toUpperCase\(\)\s*\)\);?\s*(?:const|let|var)\s+functionExpanded\s*=\s*applyFunction\(\s*cellExpanded\s*\);?\s*return\s+(?:functionExpanded\s*===\s*x|x\s*===\s*functionExpanded)\s*\?\s*functionExpanded/);
 ```
 
 If the ternary condition is false, your `evalFormula()` should return the result of calling `evalFormula()`.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*_match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\(\s*char2\s*\)\s*\)\s*\);?\s*const\s+cellRegex\s*=\s*\/\[A-J\]\[1-9\]\[0-9\]\?\/(gi|ig);?\s*const\s+cellExpanded\s*=\s*rangeExpanded\.replace\(\s*cellRegex\s*,\s*\(?\s*match\s*\)?\s*=>\s*idToText\(\s*match\.toUpperCase\(\)\s*\)\);?\s*(?:const|let|var)\s+functionExpanded\s*=\s*applyFunction\(\s*cellExpanded\s*\);?\s*return\s+(?:functionExpanded\s*===\s*x|x\s*===\s*functionExpanded)\s*\?\s*functionExpanded\s*:\s*evalFormula\(/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*_match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\(\s*char2\s*\)\s*\)\s*\);?\s*const\s+cellRegex\s*=\s*\/\[A-J\]\[1-9\]\[0-9\]\?\/(gi|ig);?\s*const\s+cellExpanded\s*=\s*rangeExpanded\.replace\(\s*cellRegex\s*,\s*\(?\s*match\s*\)?\s*=>\s*idToText\(\s*match\.toUpperCase\(\)\s*\)\);?\s*(?:const|let|var)\s+functionExpanded\s*=\s*applyFunction\(\s*cellExpanded\s*\);?\s*return\s+(?:functionExpanded\s*===\s*x|x\s*===\s*functionExpanded)\s*\?\s*functionExpanded\s*:\s*evalFormula\(/);
 ```
 
 You should pass `functionExpanded` as the first argument to your `evalFormula()` call.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*_match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\(\s*char2\s*\)\s*\)\s*\);?\s*const\s+cellRegex\s*=\s*\/\[A-J\]\[1-9\]\[0-9\]\?\/(gi|ig);?\s*const\s+cellExpanded\s*=\s*rangeExpanded\.replace\(\s*cellRegex\s*,\s*\(?\s*match\s*\)?\s*=>\s*idToText\(\s*match\.toUpperCase\(\)\s*\)\);?\s*(?:const|let|var)\s+functionExpanded\s*=\s*applyFunction\(\s*cellExpanded\s*\);?\s*return\s+(?:functionExpanded\s*===\s*x|x\s*===\s*functionExpanded)\s*\?\s*functionExpanded\s*:\s*evalFormula\(\s*functionExpanded/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*_match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\(\s*char2\s*\)\s*\)\s*\);?\s*const\s+cellRegex\s*=\s*\/\[A-J\]\[1-9\]\[0-9\]\?\/(gi|ig);?\s*const\s+cellExpanded\s*=\s*rangeExpanded\.replace\(\s*cellRegex\s*,\s*\(?\s*match\s*\)?\s*=>\s*idToText\(\s*match\.toUpperCase\(\)\s*\)\);?\s*(?:const|let|var)\s+functionExpanded\s*=\s*applyFunction\(\s*cellExpanded\s*\);?\s*return\s+(?:functionExpanded\s*===\s*x|x\s*===\s*functionExpanded)\s*\?\s*functionExpanded\s*:\s*evalFormula\(\s*functionExpanded/);
 ```
 
 You should pass `cells` as the second argument to your `evalFormula()` call.
 
 ```js
-assert.match(code, /const\s*evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*_match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\(\s*char2\s*\)\s*\)\s*\);?\s*const\s+cellRegex\s*=\s*\/\[A-J\]\[1-9\]\[0-9\]\?\/(gi|ig);?\s*const\s+cellExpanded\s*=\s*rangeExpanded\.replace\(\s*cellRegex\s*,\s*\(?\s*match\s*\)?\s*=>\s*idToText\(\s*match\.toUpperCase\(\)\s*\)\);?\s*(?:const|let|var)\s+functionExpanded\s*=\s*applyFunction\(\s*cellExpanded\s*\);?\s*return\s+(?:functionExpanded\s*===\s*x|x\s*===\s*functionExpanded)\s*\?\s*functionExpanded\s*:\s*evalFormula\(\s*functionExpanded\s*,\s*cells\s*\);?/);
+assert.match(code, /const\s+evalFormula\s*=\s*\(\s*x\s*,\s*cells\s*\)\s*=>\s*{\s*const\s+idToText\s*=\s*\(?\s*id\s*\)?\s*=>\s*cells\.find\(\s*\(?\s*cell\s*\)?\s*=>\s*(?:cell\.id\s*===\s*id|id\s*===\s*cell\.id)\s*\)\.value;?\s*const\s+rangeRegex\s*=\s*\/\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\):\(\[A-J\]\)\(\[1-9\]\[0-9\]\?\)\/(gi|ig);?\s*const\s+rangeFromString\s*=\s*\(\s*num1\s*,\s*num2\s*\)\s*=>\s*range\(\s*parseInt\(\s*num1\s*\)\s*,\s*parseInt\(\s*num2\s*\)\s*\);?\s*const\s+elemValue\s*=\s*\(?\s*num\s*\)?\s*=>\s*\(?\s*character\s*\)?\s*=>\s*idToText\(\s*character\s*\+\s*num\s*\);?\s*const\s+addCharacters\s*=\s*\(?\s*character1\s*\)?\s*=>\s*\(?\s*character2\s*\)?\s*=>\s*\(?\s*num\s*\)?\s*=>\s*charRange\(\s*character1\s*,\s*character2\s*\)\.map\(\s*elemValue\(\s*num\s*\)\s*\);?\s*const\s+rangeExpanded\s*=\s*x\.replace\(\s*rangeRegex\s*,\s*\(\s*_match\s*,\s*char1\s*,\s*num1\s*,\s*char2\s*,\s*num2\s*\)\s*=>\s*rangeFromString\(\s*num1\s*,\s*num2\s*\)\.map\(\s*addCharacters\s*\(\s*char1\s*\)\(\s*char2\s*\)\s*\)\s*\);?\s*const\s+cellRegex\s*=\s*\/\[A-J\]\[1-9\]\[0-9\]\?\/(gi|ig);?\s*const\s+cellExpanded\s*=\s*rangeExpanded\.replace\(\s*cellRegex\s*,\s*\(?\s*match\s*\)?\s*=>\s*idToText\(\s*match\.toUpperCase\(\)\s*\)\);?\s*(?:const|let|var)\s+functionExpanded\s*=\s*applyFunction\(\s*cellExpanded\s*\);?\s*return\s+(?:functionExpanded\s*===\s*x|x\s*===\s*functionExpanded)\s*\?\s*functionExpanded\s*:\s*evalFormula\(\s*functionExpanded\s*,\s*cells\s*\);?/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-algorithmic-thinking-by-building-a-dice-game/6579fc66adaabbca6ceddb1f.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-algorithmic-thinking-by-building-a-dice-game/6579fc66adaabbca6ceddb1f.md
index e9003135856..27d8dd0ead7 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-algorithmic-thinking-by-building-a-dice-game/6579fc66adaabbca6ceddb1f.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-algorithmic-thinking-by-building-a-dice-game/6579fc66adaabbca6ceddb1f.md
@@ -18,7 +18,7 @@ When you are ready, use the `querySelectorAll()` method to target all elements w
 You should have a `const` variable called `listOfAllDice`.
 
 ```js
-assert.match(code, /const\s*listOfAllDice\s*/);
+assert.match(code, /const\s+listOfAllDice\s*/);
 ```
 
 You should assign the `document.querySelectorAll()` method to the `listOfAllDice` variable.
@@ -30,7 +30,7 @@ assert.match(code, /const\s+listOfAllDice\s*=\s*document\.querySelectorAll\s*\(.
 You should target all elements with the `class` of `die` inside the `querySelectorAll` method.
 
 ```js
-assert.match(code, /const\s*listOfAllDice\s*=\s*document\.querySelectorAll\s*\(\s*('|")\.die\1\s*\)/);
+assert.match(code, /const\s+listOfAllDice\s*=\s*document\.querySelectorAll\s*\(\s*('|")\.die\1\s*\)/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-algorithmic-thinking-by-building-a-dice-game/657a05f6b5654ad24614a229.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-algorithmic-thinking-by-building-a-dice-game/657a05f6b5654ad24614a229.md
index 7ca8159b4de..28aa4bb0036 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-algorithmic-thinking-by-building-a-dice-game/657a05f6b5654ad24614a229.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-algorithmic-thinking-by-building-a-dice-game/657a05f6b5654ad24614a229.md
@@ -18,25 +18,25 @@ Then, use `getElementById()` to access the element with the `id` of `current-rou
 You should use `const` to declare a variable named `currentRoundText`.
 
 ```js
-assert.match(code, /const\s*currentRoundText\s*/);
+assert.match(code, /const\s+currentRoundText\s*/);
 ```
 
 You should use `document.getElementById()` to target the `current-round` element and assign it to your `currentRoundText` variable.
 
 ```js
-assert.match(code, /const\s*currentRoundText\s*=\s*document\.getElementById\s*\(\s*('|")current-round\1\s*\)\s*;?/s);
+assert.match(code, /const\s+currentRoundText\s*=\s*document\.getElementById\s*\(\s*('|")current-round\1\s*\)\s*;?/s);
 ```
 
 You should use `const` to declare a variable named `currentRoundRollsText`.
 
 ```js
-assert.match(code, /const\s*currentRoundRollsText\s*/);
+assert.match(code, /const\s+currentRoundRollsText\s*/);
 ```
 
 You should use `document.getElementById()` to target the `current-round-rolls` element and assign it to your `currentRoundRollsText` variable.
 
 ```js
-assert.match(code, /const\s*currentRoundRollsText\s*=\s*document\.getElementById\s*\(\s*('|")current-round-rolls\1\s*\)\s*;?/s);
+assert.match(code, /const\s+currentRoundRollsText\s*=\s*document\.getElementById\s*\(\s*('|")current-round-rolls\1\s*\)\s*;?/s);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-algorithmic-thinking-by-building-a-dice-game/657a0894e5b6acd463cf5aac.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-algorithmic-thinking-by-building-a-dice-game/657a0894e5b6acd463cf5aac.md
index 5606e33ff9a..dc93839d525 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-algorithmic-thinking-by-building-a-dice-game/657a0894e5b6acd463cf5aac.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-algorithmic-thinking-by-building-a-dice-game/657a0894e5b6acd463cf5aac.md
@@ -18,25 +18,25 @@ Then, use `getElementById()` to access the element with the `id` of `score-histo
 You should use `const` to declare a variable named `totalScoreText`.
 
 ```js
-assert.match(code, /const\s*totalScoreText\s*/);
+assert.match(code, /const\s+totalScoreText\s*/);
 ```
 
 You should use `document.getElementById()` to target the `total-score` element and assign it to your `totalScoreText` variable.
 
 ```js
-assert.match(code, /const\s*totalScoreText\s*=\s*document\.getElementById\s*\(\s*('|")total-score\1\s*\)\s*;?/s);
+assert.match(code, /const\s+totalScoreText\s*=\s*document\.getElementById\s*\(\s*('|")total-score\1\s*\)\s*;?/s);
 ```
 
 You should use `const` to declare a variable named `scoreHistory`.
 
 ```js
-assert.match(code, /const\s*scoreHistory\s*/);
+assert.match(code, /const\s+scoreHistory\s*/);
 ```
 
 You should use `document.getElementById()` to target the `score-history` element and assign it to your `scoreHistory` variable.
 
 ```js
-assert.match(code, /const\s*scoreHistory\s*=\s*document\.getElementById\s*\(\s*('|")score-history\1\s*\)\s*;?/s);
+assert.match(code, /const\s+scoreHistory\s*=\s*document\.getElementById\s*\(\s*('|")score-history\1\s*\)\s*;?/s);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-algorithmic-thinking-by-building-a-dice-game/657a0b3f420571d6a2208a18.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-algorithmic-thinking-by-building-a-dice-game/657a0b3f420571d6a2208a18.md
index 15852caf282..b39ea0eec4e 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-algorithmic-thinking-by-building-a-dice-game/657a0b3f420571d6a2208a18.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-algorithmic-thinking-by-building-a-dice-game/657a0b3f420571d6a2208a18.md
@@ -18,7 +18,7 @@ Then, use `getElementById()` to access the element with the `id` of `keep-score-
 You should use `const` to declare a variable called `rollDiceBtn`.
 
 ```js
-assert.match(code, /const\s*rollDiceBtn\s*/);
+assert.match(code, /const\s+rollDiceBtn\s*/);
 ```
 
 You should use `document.getElementById()` to target the `roll-dice-btn` element and assign it to your `rollDiceBtn` variable.
@@ -30,7 +30,7 @@ assert.match(code, /const\s+rollDiceBtn\s*=\s*document\.getElementById\s*\(\s*('
 You should use `const` to declare a variable called `keepScoreBtn`.
 
 ```js
-assert.match(code, /const\s*keepScoreBtn\s*/);
+assert.match(code, /const\s+keepScoreBtn\s*/);
 ```
 
 You should use `document.getElementById()` to target the `keep-score-btn` element and assign it to your `keepScoreBtn` variable.
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-algorithmic-thinking-by-building-a-dice-game/657a0d3d9ce4e1d8794a3c14.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-algorithmic-thinking-by-building-a-dice-game/657a0d3d9ce4e1d8794a3c14.md
index 7f8b6c4b370..48413010d4d 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-algorithmic-thinking-by-building-a-dice-game/657a0d3d9ce4e1d8794a3c14.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-algorithmic-thinking-by-building-a-dice-game/657a0d3d9ce4e1d8794a3c14.md
@@ -18,19 +18,19 @@ Then, use `getElementById()` to access the element with the `id` of `rules-btn`
 You should use `const` to declare a variable called `rulesContainer`.
 
 ```js
-assert.match(code, /const\s*rulesContainer\s*/);
+assert.match(code, /const\s+rulesContainer\s*/);
 ```
 
 You should use `document.querySelector()` to target the `.rules-container` element and assign it to your `rulesContainer` variable.
 
 ```js
-assert.match(code, /const\s*rulesContainer\s*=\s*document\.querySelector\s*\(\s*('|")\.rules\-container\1\s*\)/);
+assert.match(code, /const\s+rulesContainer\s*=\s*document\.querySelector\s*\(\s*('|")\.rules\-container\1\s*\)/);
 ```
 
 You should use `const` to declare a variable called `rulesBtn`.
 
 ```js
-assert.match(code, /const\s*rulesBtn\s*/);
+assert.match(code, /const\s+rulesBtn\s*/);
 ```
 
 You should use `document.getElementById()` to target the `rules-btn` element and assign it to your `rulesBtn` variable.
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-algorithmic-thinking-by-building-a-dice-game/657a0ea50da0c8d9d6d7950a.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-algorithmic-thinking-by-building-a-dice-game/657a0ea50da0c8d9d6d7950a.md
index d7f5ea2f809..3c7793c006b 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-algorithmic-thinking-by-building-a-dice-game/657a0ea50da0c8d9d6d7950a.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-algorithmic-thinking-by-building-a-dice-game/657a0ea50da0c8d9d6d7950a.md
@@ -16,13 +16,13 @@ Use `let` to create a variable called `isModalShowing` and assign it the value o
 You should use `let` to declare a variable named `isModalShowing`.
 
 ```js
-assert.match(code, /let\s*isModalShowing\s*/);
+assert.match(code, /let\s+isModalShowing\s*/);
 ```
 
 You should assign the boolean `false` to your `isModalShowing` variable.
 
 ```js
-assert.match(code, /let\s*isModalShowing\s*=\s*false/);
+assert.match(code, /let\s+isModalShowing\s*=\s*false/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-algorithmic-thinking-by-building-a-dice-game/657a0fb4dab33fdaf82232c6.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-algorithmic-thinking-by-building-a-dice-game/657a0fb4dab33fdaf82232c6.md
index 61c3ed8fef0..8bc1f3982ab 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-algorithmic-thinking-by-building-a-dice-game/657a0fb4dab33fdaf82232c6.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-algorithmic-thinking-by-building-a-dice-game/657a0fb4dab33fdaf82232c6.md
@@ -16,13 +16,13 @@ Use `let` to create a variable called `diceValuesArr` and assign it the value of
 You should have a `let` variable called `diceValuesArr`.
 
 ```js
-assert.match(code, /let\s*diceValuesArr\s*/);
+assert.match(code, /let\s+diceValuesArr\s*/);
 ```
 
 You should assign an empty array to your `diceValuesArr` variable.
 
 ```js
-assert.match(code, /let\s*diceValuesArr\s*=\s*\[\s*\]\s*;?/);
+assert.match(code, /let\s+diceValuesArr\s*=\s*\[\s*\]\s*;?/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-algorithmic-thinking-by-building-a-dice-game/657a16a3e36c17e088e55c8b.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-algorithmic-thinking-by-building-a-dice-game/657a16a3e36c17e088e55c8b.md
index f1236238df8..b21f36faf8f 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-algorithmic-thinking-by-building-a-dice-game/657a16a3e36c17e088e55c8b.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-algorithmic-thinking-by-building-a-dice-game/657a16a3e36c17e088e55c8b.md
@@ -18,7 +18,7 @@ Then, use `let` to declare a variable named `round` and assign it the number `1`
 You should use `let` to declare a variable named `rolls`.
 
 ```js
-assert.match(code, /let\s*rolls/);
+assert.match(code, /let\s+rolls/);
 ```
 
 You should assign the number `0` to your `rolls` variable.
@@ -30,7 +30,7 @@ assert.match(code, /rolls\s*=\s*0/);
 You should use `let` to declare a variable named `score`.
 
 ```js
-assert.match(code, /let\s*score/);
+assert.match(code, /let\s+score/);
 ```
 
 You should assign the number `0` to `score` variable.
@@ -42,7 +42,7 @@ assert.match(code, /score\s*=\s*0/);
 You should use `let` to declare a variable named `totalScore`.
 
 ```js
-assert.match(code, /let\s*totalScore/);
+assert.match(code, /let\s+totalScore/);
 ```
 
 You should assign the number `0` to your `totalScore` variable.
@@ -54,7 +54,7 @@ assert.match(code, /totalScore\s*=\s*0/);
 You should use `let` to declare a variable named `round`.
 
 ```js
-assert.match(code, /let\s*round/);
+assert.match(code, /let\s+round/);
 ```
 
 You should assign the number `1` to your `round` variable.
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-algorithmic-thinking-by-building-a-dice-game/657c9dbff0fee6196fa8dcff.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-algorithmic-thinking-by-building-a-dice-game/657c9dbff0fee6196fa8dcff.md
index eb049bb2f58..845fb32db9a 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-algorithmic-thinking-by-building-a-dice-game/657c9dbff0fee6196fa8dcff.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-algorithmic-thinking-by-building-a-dice-game/657c9dbff0fee6196fa8dcff.md
@@ -28,13 +28,13 @@ assert.match(code, /for\s*\(\s*let\s+i\s*=\s*0\s*;/);
 Your `for` loop should have a condition that checks if `i` is less than `5`.
 
 ```js
-assert.match(code, /for\s*\(\s*let\s*i\s*=\s*0\s*;\s*i\s*<\s*5\s*;/);
+assert.match(code, /for\s*\(\s*let\s+i\s*=\s*0\s*;\s*i\s*<\s*5\s*;/);
 ```
 
 Your `for` loop should increment `i` by `1` each time it runs.
 
 ```js
-assert.match(code, /for\s*\(\s*let\s*i\s*=\s*0\s*;\s*i\s*<\s*5\s*;\s*i\s*\+\+\s*\)/);
+assert.match(code, /for\s*\(\s*let\s+i\s*=\s*0\s*;\s*i\s*<\s*5\s*;\s*i\s*\+\+\s*\)/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-algorithmic-thinking-by-building-a-dice-game/657d068a236fb16f00183e2b.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-algorithmic-thinking-by-building-a-dice-game/657d068a236fb16f00183e2b.md
index 05466829897..25a39a20584 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-algorithmic-thinking-by-building-a-dice-game/657d068a236fb16f00183e2b.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-algorithmic-thinking-by-building-a-dice-game/657d068a236fb16f00183e2b.md
@@ -16,13 +16,13 @@ Use `let` to create a `highestCount` variable and assign it the value of `0`.
 You should have a `let` variable called `highestCount`.
 
 ```js
-assert.match(code, /let\s*highestCount\s*/);
+assert.match(code, /let\s+highestCount\s*/);
 ```
 
 Your `highestCount` variable should have a value of `0`.
 
 ```js
-assert.match(code, /let\s*highestCount\s*=\s*0\s*;?/);
+assert.match(code, /let\s+highestCount\s*=\s*0\s*;?/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-algorithmic-thinking-by-building-a-dice-game/657d10e12efdd577d27597ff.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-algorithmic-thinking-by-building-a-dice-game/657d10e12efdd577d27597ff.md
index f440ee447bd..51eff0044a5 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-algorithmic-thinking-by-building-a-dice-game/657d10e12efdd577d27597ff.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-algorithmic-thinking-by-building-a-dice-game/657d10e12efdd577d27597ff.md
@@ -18,7 +18,7 @@ Finally, assign the entire result to a `const` variable called `sumOfAllDice`.
 You should have a `const` variable named `sumOfAllDice`.
 
 ```js
-assert.match(code, /const\s*sumOfAllDice/);
+assert.match(code, /const\s+sumOfAllDice/);
 ```
 
 You should use the `reduce` method on the `diceValuesArr`.
@@ -48,7 +48,7 @@ assert.match(code, /.*diceValuesArr\s*\.\s*reduce\s*\([\s\S]+,\s*0\s*\)\s*;?/);
 You should assign the result of the `reduce` method to the `sumOfAllDice` variable.
 
 ```js
-assert.match(code, /const\s*sumOfAllDice\s*=\s*diceValuesArr\s*\.\s*reduce.*/);
+assert.match(code, /const\s+sumOfAllDice\s*=\s*diceValuesArr\s*\.\s*reduce.*/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-algorithmic-thinking-by-building-a-dice-game/657e0c2c6a9d37705146f34d.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-algorithmic-thinking-by-building-a-dice-game/657e0c2c6a9d37705146f34d.md
index 92334465778..2d5108c42aa 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-algorithmic-thinking-by-building-a-dice-game/657e0c2c6a9d37705146f34d.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-algorithmic-thinking-by-building-a-dice-game/657e0c2c6a9d37705146f34d.md
@@ -26,13 +26,13 @@ assert.isFunction(detectFullHouse);
 You should use arrow syntax for your `detectFullHouse` function.
 
 ```js
-assert.match(code, /const\s*detectFullHouse\s*=\s*\(?\s*.*\s*\)?\s*=>\s*{/);
+assert.match(code, /const\s+detectFullHouse\s*=\s*\(?\s*.*\s*\)?\s*=>\s*{/);
 ```
 
 Your `detectFullHouse` function should have a parameter called `arr`.
 
 ```js
-assert.match(code, /const\s*detectFullHouse\s*=\s*\(?\s*arr\s*\)?\s*=>\s*{/);
+assert.match(code, /const\s+detectFullHouse\s*=\s*\(?\s*arr\s*\)?\s*=>\s*{/);
 ```
 
 You should have a `const` variable called `counts` and assign an empty object to it.
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/6482b07e8a3dcacbbbfa43f6.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/6482b07e8a3dcacbbbfa43f6.md
index fa3d73665ff..219c36ba231 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/6482b07e8a3dcacbbbfa43f6.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/6482b07e8a3dcacbbbfa43f6.md
@@ -16,7 +16,7 @@ Use `let` to create a new variable called `isCheckpointCollisionDetectionActive`
 You should use the `let` keyword to declare your `isCheckpointCollisionDetectionActive` variable.
 
 ```js
-assert.match(code, /let isCheckpointCollisionDetectionActive/);
+assert.match(code, /let\s+isCheckpointCollisionDetectionActive/);
 ```
 
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64caeb134c3cdc5498cd75b9.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64caeb134c3cdc5498cd75b9.md
index 760d88f701d..311b7eec2d2 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64caeb134c3cdc5498cd75b9.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64caeb134c3cdc5498cd75b9.md
@@ -14,7 +14,7 @@ Inside that array, add a conditional statement that checks if the player's `x` p
 You should have a conditional statement that checks if the player's `x` position is greater than or equal to the platform's `x` position minus half of the player's width.
 
 ```js
-assert.match(code, /const\s*platformDetectionRules\s+=\s*\[\s*player\.position\.x\s*>=\s*platform\.position\.x\s*-\s*player\.width\s*\/\s*2,?\s*\];?/)
+assert.match(code, /const\s+platformDetectionRules\s+=\s*\[\s*player\.position\.x\s*>=\s*platform\.position\.x\s*-\s*player\.width\s*\/\s*2,?\s*\];?/)
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64caeeae2fa57756035d6012.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64caeeae2fa57756035d6012.md
index a3fd4c1f9f9..c9e117b309e 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64caeeae2fa57756035d6012.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64caeeae2fa57756035d6012.md
@@ -14,7 +14,7 @@ Below that conditional statement, add another conditional statement that checks
 You should have a conditional statement that checks if the player's `x` position is less than or equal to the sum of the platform's `x` position and the platform's width minus one third of the player's width.
 
 ```js
-assert.match(code, /const\s*platformDetectionRules\s+=\s*\[\s*player\.position\.x\s*>=\s*platform\.position\.x\s*-\s*player\.width\s*\/\s*2,?\s*player\.position\.x\s*<=\s*platform\.position\.x\s*\+\s*platform\.width\s*-\s*player\.width\s*\/\s*3,?\s*\];?/)
+assert.match(code, /const\s+platformDetectionRules\s+=\s*\[\s*player\.position\.x\s*>=\s*platform\.position\.x\s*-\s*player\.width\s*\/\s*2,?\s*player\.position\.x\s*<=\s*platform\.position\.x\s*\+\s*platform\.width\s*-\s*player\.width\s*\/\s*3,?\s*\];?/)
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64caf1be15606d5814c3387b.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64caf1be15606d5814c3387b.md
index a6d2c589d8f..8d32ad990ba 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64caf1be15606d5814c3387b.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64caf1be15606d5814c3387b.md
@@ -16,21 +16,21 @@ Below that, add another conditional statement that checks if the player's `y` po
 You should not alter the existing `platformDetectionRules` array and its content.
 
 ```js
-assert.match(code, /const\s*platformDetectionRules\s+=\s*\[\s*player\.position\.x\s*>=\s*platform\.position\.x\s*-\s*player\.width\s*\/\s*2,?\s*player\.position\.x\s*<=\s*platform\.position\.x\s*\+\s*platform\.width\s*-\s*player\.width\s*\/\s*3,\s*.*\s*.*\s*\];?/)
+assert.match(code, /const\s+platformDetectionRules\s+=\s*\[\s*player\.position\.x\s*>=\s*platform\.position\.x\s*-\s*player\.width\s*\/\s*2,?\s*player\.position\.x\s*<=\s*platform\.position\.x\s*\+\s*platform\.width\s*-\s*player\.width\s*\/\s*3,\s*.*\s*.*\s*\];?/)
 
 ```
 
 You should have a conditional statement that checks if the player's `y` position plus the player's height is greater than or equal to the platform's `y` position.
 
 ```js
-assert.match(code, /const\s*platformDetectionRules\s+=\s*\[\s*player\.position\.x\s*>=\s*platform\.position\.x\s*-\s*player\.width\s*\/\s*2,?\s*player\.position\.x\s*<=\s*platform\.position\.x\s*\+\s*platform\.width\s*-\s*player\.width\s*\/\s*3,\s*player\.position\.y\s*\+\s*player\.height\s*>=\s*platform\.position\.y,\s*.*\s*\];?/)
+assert.match(code, /const\s+platformDetectionRules\s+=\s*\[\s*player\.position\.x\s*>=\s*platform\.position\.x\s*-\s*player\.width\s*\/\s*2,?\s*player\.position\.x\s*<=\s*platform\.position\.x\s*\+\s*platform\.width\s*-\s*player\.width\s*\/\s*3,\s*player\.position\.y\s*\+\s*player\.height\s*>=\s*platform\.position\.y,\s*.*\s*\];?/)
 
 ```
 
 You should have a conditional statement that checks if the player's `y` position is less than or equal to the sum of the platform's `y` position plus the platform's height.
 
 ```js
-assert.match(code, /const\s*platformDetectionRules\s+=\s*\[\s*player\.position\.x\s*>=\s*platform\.position\.x\s*-\s*player\.width\s*\/\s*2,?\s*player\.position\.x\s*<=\s*platform\.position\.x\s*\+\s*platform\.width\s*-\s*player\.width\s*\/\s*3,\s*player\.position\.y\s*\+\s*player\.height\s*>=\s*platform\.position\.y,\s*player\.position\.y\s*<=\s*platform\.position\.y\s*\+\s*platform\.height,?\s*\];?/)
+assert.match(code, /const\s+platformDetectionRules\s+=\s*\[\s*player\.position\.x\s*>=\s*platform\.position\.x\s*-\s*player\.width\s*\/\s*2,?\s*player\.position\.x\s*<=\s*platform\.position\.x\s*\+\s*platform\.width\s*-\s*player\.width\s*\/\s*3,\s*player\.position\.y\s*\+\s*player\.height\s*>=\s*platform\.position\.y,\s*player\.position\.y\s*<=\s*platform\.position\.y\s*\+\s*platform\.height,?\s*\];?/)
 
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-localstorage-by-building-a-todo-app/64e4eec13546c06d61a63d59.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-localstorage-by-building-a-todo-app/64e4eec13546c06d61a63d59.md
index 2f2eb295bca..e7efd346a9c 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-localstorage-by-building-a-todo-app/64e4eec13546c06d61a63d59.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-localstorage-by-building-a-todo-app/64e4eec13546c06d61a63d59.md
@@ -29,19 +29,19 @@ If the task exists, this returns the index, and if it doesn't exist, it returns
 You should use `const` to declare a `dataArrIndex` variable and set it to `taskData.findIndex()`.
 
 ```js
-assert.match(code, /const dataArrIndex\s*=\s*taskData\.findIndex\(/)
+assert.match(code, /const\s+dataArrIndex\s*=\s*taskData\.findIndex\(/)
 ```
 
 You should pass in `item` as the parameter of the arrow function callback. Don't use curly braces.
 
 ```js
-assert.match(code, /const dataArrIndex\s*=\s*taskData\.findIndex\(\(?item\)?/)
+assert.match(code, /const\s+dataArrIndex\s*=\s*taskData\.findIndex\(\(?item\)?/)
 ```
 
 Your arrow function callback should check if `item.id === currentTask.id`.
 
 ```js
-assert.match(code, /const dataArrIndex\s*=\s*taskData\.findIndex\(\(?item\)?\s*=>\s*item.id\s*===\s*currentTask.id\s*\);?/)
+assert.match(code, /const\s+dataArrIndex\s*=\s*taskData\.findIndex\(\(?item\)?\s*=>\s*item.id\s*===\s*currentTask.id\s*\);?/)
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-localstorage-by-building-a-todo-app/64faca774fd9fd74bc084cc9.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-localstorage-by-building-a-todo-app/64faca774fd9fd74bc084cc9.md
index 8761f1d0e00..beef2dbdf45 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-localstorage-by-building-a-todo-app/64faca774fd9fd74bc084cc9.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-localstorage-by-building-a-todo-app/64faca774fd9fd74bc084cc9.md
@@ -16,7 +16,7 @@ To begin, within the `closeTaskFormBtn` event listener, create a `formInputsCont
 You should use `const` to create a variable `formInputsContainValues` with the value `titleInput.value || dateInput.value || descriptionInput.value;`
 
 ```js
-assert.match(code, /const\s*formInputsContainValues\s*=\s*titleInput\.value\s*\|\|\s*dateInput\.value\s*\|\|\s*descriptionInput\.value;?/)
+assert.match(code, /const\s+formInputsContainValues\s*=\s*titleInput\.value\s*\|\|\s*dateInput\.value\s*\|\|\s*descriptionInput\.value;?/)
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-localstorage-by-building-a-todo-app/64fad07f43a101779cb8692a.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-localstorage-by-building-a-todo-app/64fad07f43a101779cb8692a.md
index 5157d883150..3363d165bb2 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-localstorage-by-building-a-todo-app/64fad07f43a101779cb8692a.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-localstorage-by-building-a-todo-app/64fad07f43a101779cb8692a.md
@@ -28,13 +28,13 @@ assert.match(code, /const\s+addOrUpdateTask\s*=\s*\(\s*\)\s*=>\s*\{\s*const\s+da
 You should move the `taskObj` object into the `addOrUpdateTask` function.
 
 ```js
-assert.match(code, /const\s+addOrUpdateTask\s*=\s*\(\s*\)\s*=>\s*\{\s*const\s+dataArrIndex\s*=\s*taskData\.findIndex\(\s*(?:\(\s*item\s*\)|item)\s*=>\s*(?:item\.id\s===\s*currentTask\.id|currentTask\.id\s*===\s*item\.id)\s*\)\s*;?\s*const\s*taskObj\s*=\s*\{\s*id\s*:\s*`\$\{\s*titleInput\.value\.toLowerCase\(\s*\)\.split\(\s*('|")\s{1}\1\s*\)\.join\(\s*('|")-\2\s*\)\s*\}-\$\{\s*Date\.now\(\s*\)\s*\}`\s*,\s*title\s*:\s*titleInput\.value,\s*date\s*:\s*dateInput\.value\s*,\s*description\s*:\s*descriptionInput\.value\s*,?\s*\}\s*;?/)
+assert.match(code, /const\s+addOrUpdateTask\s*=\s*\(\s*\)\s*=>\s*\{\s*const\s+dataArrIndex\s*=\s*taskData\.findIndex\(\s*(?:\(\s*item\s*\)|item)\s*=>\s*(?:item\.id\s===\s*currentTask\.id|currentTask\.id\s*===\s*item\.id)\s*\)\s*;?\s*const\s+taskObj\s*=\s*\{\s*id\s*:\s*`\$\{\s*titleInput\.value\.toLowerCase\(\s*\)\.split\(\s*('|")\s{1}\1\s*\)\.join\(\s*('|")-\2\s*\)\s*\}-\$\{\s*Date\.now\(\s*\)\s*\}`\s*,\s*title\s*:\s*titleInput\.value,\s*date\s*:\s*dateInput\.value\s*,\s*description\s*:\s*descriptionInput\.value\s*,?\s*\}\s*;?/)
 ```
 
 You should move the `if` statement with the condition `dataArrIndex === 1` into your `addOrUpdateTask` function.
 
 ```js
-assert.match(code, /const\s+addOrUpdateTask\s*=\s*\(\s*\)\s*=>\s*\{\s*const\s+dataArrIndex\s*=\s*taskData\.findIndex\(\s*(?:\(\s*item\s*\)|item)\s*=>\s*(?:item\.id\s*===\s*currentTask\.id|currentTask\.id\s*===\s*item\.id)\s*\)\s*;?\s*const\s*taskObj\s*=\s*\{\s*id\s*:\s*`\$\{\s*titleInput\.value\.toLowerCase\(\s*\)\.split\(\s*('|")\s{1}\1\s*\)\.join\(\s*('|")-\2\s*\)\s*\}-\$\{\s*Date\.now\(\s*\)\s*\}`\s*,\s*title\s*:\s*titleInput\.value,\s*date\s*:\s*dateInput\.value\s*,\s*description\s*:\s*descriptionInput\.value\s*,?\s*\}\s*;?\s*if\s*\(\s*dataArrIndex\s*===\s*-1\s*\)\s*\{\s*taskData\.unshift\(\s*taskObj\s*\)\s*;?\s*\}\s*\}\s*;?/)
+assert.match(code, /const\s+addOrUpdateTask\s*=\s*\(\s*\)\s*=>\s*\{\s*const\s+dataArrIndex\s*=\s*taskData\.findIndex\(\s*(?:\(\s*item\s*\)|item)\s*=>\s*(?:item\.id\s*===\s*currentTask\.id|currentTask\.id\s*===\s*item\.id)\s*\)\s*;?\s*const\s+taskObj\s*=\s*\{\s*id\s*:\s*`\$\{\s*titleInput\.value\.toLowerCase\(\s*\)\.split\(\s*('|")\s{1}\1\s*\)\.join\(\s*('|")-\2\s*\)\s*\}-\$\{\s*Date\.now\(\s*\)\s*\}`\s*,\s*title\s*:\s*titleInput\.value,\s*date\s*:\s*dateInput\.value\s*,\s*description\s*:\s*descriptionInput\.value\s*,?\s*\}\s*;?\s*if\s*\(\s*dataArrIndex\s*===\s*-1\s*\)\s*\{\s*taskData\.unshift\(\s*taskObj\s*\)\s*;?\s*\}\s*\}\s*;?/)
 ```
 
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-localstorage-by-building-a-todo-app/64fad9cd2eeb1e7ca2ca8c8b.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-localstorage-by-building-a-todo-app/64fad9cd2eeb1e7ca2ca8c8b.md
index 5e194ae7d68..c37056959d5 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-localstorage-by-building-a-todo-app/64fad9cd2eeb1e7ca2ca8c8b.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-localstorage-by-building-a-todo-app/64fad9cd2eeb1e7ca2ca8c8b.md
@@ -14,7 +14,7 @@ Use arrow syntax to create an `updateTaskContainer` function. Then move the `tas
 You should use `const` and arrow syntax to create a `updateTaskContainer` function.
 
 ```js
-assert.match(code, /const\s*updateTaskContainer\s*=\s*\(\)\s*=>\s*\{/)
+assert.match(code, /const\s+updateTaskContainer\s*=\s*\(\)\s*=>\s*\{/)
 ```
 
 You should move `taskData.forEach()` and its content into the `updateTaskContainer()` function.
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-localstorage-by-building-a-todo-app/64faedcd16a1e985c4c2dc94.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-localstorage-by-building-a-todo-app/64faedcd16a1e985c4c2dc94.md
index ef1f7dfbd67..e2ce9c7cb16 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-localstorage-by-building-a-todo-app/64faedcd16a1e985c4c2dc94.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-localstorage-by-building-a-todo-app/64faedcd16a1e985c4c2dc94.md
@@ -325,7 +325,7 @@ const updateTaskContainer = () => {
           <p><strong>Date:</strong> ${date}</p>
           <p><strong>Description:</strong> ${description}</p>
           <button onclick="editTask(this)" type="button" class="btn">Edit</button>
-          <button onclick="deleteTask(this)" type="button" class="btn">Delete</button> 
+          <button onclick="deleteTask(this)" type="button" class="btn">Delete</button>
         </div>
       `)
     }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-localstorage-by-building-a-todo-app/64faf65b22ad8d07df9be14d.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-localstorage-by-building-a-todo-app/64faf65b22ad8d07df9be14d.md
index 27dc82c7460..4ec4415c981 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-localstorage-by-building-a-todo-app/64faf65b22ad8d07df9be14d.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-localstorage-by-building-a-todo-app/64faf65b22ad8d07df9be14d.md
@@ -16,25 +16,25 @@ Create a `dataArrIndex` variable and set its value using the `findIndex()` metho
 You should not alter the `deleteTask` function.
 
 ```js
-assert.match(code, /const\s*deleteTask\s*=\s*\(buttonEl\)\s*=>\s*\{\s*/)
+assert.match(code, /const\s+deleteTask\s*=\s*\(buttonEl\)\s*=>\s*\{\s*/)
 ```
 
 You should use `const` to declare a `dataArrIndex` variable and set it to `taskData.findIndex()`.
 
 ```js
-assert.match(code, /const\s*deleteTask\s*=\s*\(buttonEl\)\s*=>\s*\{\s*const\s+dataArrIndex\s*=\s*taskData\.findIndex\(/)
+assert.match(code, /const\s+deleteTask\s*=\s*\(buttonEl\)\s*=>\s*\{\s*const\s+dataArrIndex\s*=\s*taskData\.findIndex\(/)
 ```
 
 You should pass in `item` as the parameter of the `findIndex()` arrow function callback.
 
 ```js
-assert.match(code, /const\s*deleteTask\s*=\s*\(buttonEl\)\s*=>\s*\{\s*const\s+dataArrIndex\s*=\s*taskData\.findIndex\(\s*(\(\s*item\s*\)|item)/)
+assert.match(code, /const\s+deleteTask\s*=\s*\(buttonEl\)\s*=>\s*\{\s*const\s+dataArrIndex\s*=\s*taskData\.findIndex\(\s*(\(\s*item\s*\)|item)/)
 ```
 
 Your arrow function callback should check if `item.id === buttonEl.parentElement.id`. Don't use curly braces.
 
 ```js
-assert.match(code, /const\s*deleteTask\s*=\s*\(buttonEl\)\s*=>\s*\{\s*const\s+dataArrIndex\s*=\s*taskData\.findIndex\(\s*(\(\s*item\s*\)|item)\s*=>\s*(item\.id\s*===\s*buttonEl\.parentElement\.id|buttonEl\.parentElement\.id\s*===\s*item\.id)\s*\);?\s*\};?/)
+assert.match(code, /const\s+deleteTask\s*=\s*\(buttonEl\)\s*=>\s*\{\s*const\s+dataArrIndex\s*=\s*taskData\.findIndex\(\s*(\(\s*item\s*\)|item)\s*=>\s*(item\.id\s*===\s*buttonEl\.parentElement\.id|buttonEl\.parentElement\.id\s*===\s*item\.id)\s*\);?\s*\};?/)
 ```
 
 
@@ -334,7 +334,7 @@ const updateTaskContainer = () => {
           <p><strong>Date:</strong> ${date}</p>
           <p><strong>Description:</strong> ${description}</p>
           <button onclick="editTask(this)" type="button" class="btn">Edit</button>
-          <button onclick="deleteTask(this)" type="button" class="btn">Delete</button> 
+          <button onclick="deleteTask(this)" type="button" class="btn">Delete</button>
         </div>
       `)
     }
@@ -343,7 +343,7 @@ const updateTaskContainer = () => {
 
 --fcc-editable-region--
 const deleteTask = (buttonEl) => {
-  
+
 }
 --fcc-editable-region--
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-localstorage-by-building-a-todo-app/64fafac95328110a69bcb75f.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-localstorage-by-building-a-todo-app/64fafac95328110a69bcb75f.md
index 60e5c835a01..a973415dca2 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-localstorage-by-building-a-todo-app/64fafac95328110a69bcb75f.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-localstorage-by-building-a-todo-app/64fafac95328110a69bcb75f.md
@@ -325,7 +325,7 @@ const updateTaskContainer = () => {
           <p><strong>Date:</strong> ${date}</p>
           <p><strong>Description:</strong> ${description}</p>
           <button onclick="editTask(this)" type="button" class="btn">Edit</button>
-          <button onclick="deleteTask(this)" type="button" class="btn">Delete</button> 
+          <button onclick="deleteTask(this)" type="button" class="btn">Delete</button>
         </div>
       `)
     }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-localstorage-by-building-a-todo-app/64fb0fa0968f2b113b2d90e9.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-localstorage-by-building-a-todo-app/64fb0fa0968f2b113b2d90e9.md
index 9d9e4d5b4cd..12f943b50b0 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-localstorage-by-building-a-todo-app/64fb0fa0968f2b113b2d90e9.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-localstorage-by-building-a-todo-app/64fb0fa0968f2b113b2d90e9.md
@@ -333,7 +333,7 @@ const updateTaskContainer = () => {
           <p><strong>Date:</strong> ${date}</p>
           <p><strong>Description:</strong> ${description}</p>
           <button onclick="editTask(this)" type="button" class="btn">Edit</button>
-          <button onclick="deleteTask(this)" type="button" class="btn">Delete</button> 
+          <button onclick="deleteTask(this)" type="button" class="btn">Delete</button>
         </div>
       `)
     }
@@ -352,7 +352,7 @@ const deleteTask = (buttonEl) => {
 
 --fcc-editable-region--
 const editTask = (buttonEl) => {
-  
+
 }
 --fcc-editable-region--
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-localstorage-by-building-a-todo-app/64fb1c4dc0feb219149a7c7d.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-localstorage-by-building-a-todo-app/64fb1c4dc0feb219149a7c7d.md
index c089415e0c5..1ea1208d59d 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-localstorage-by-building-a-todo-app/64fb1c4dc0feb219149a7c7d.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-localstorage-by-building-a-todo-app/64fb1c4dc0feb219149a7c7d.md
@@ -16,19 +16,19 @@ Inside the `closeTaskFormBtn` event listener, use `const` to create another vari
 Your `formInputValuesUpdated` variable should check if `titleInput.value` is not equal to `currentTask.title`.
 
 ```js
-assert.match(code, /const\s*formInputValuesUpdated\s*=\s*titleInput\.value\s*!==\s*currentTask\.title\s*/)
+assert.match(code, /const\s+formInputValuesUpdated\s*=\s*titleInput\.value\s*!==\s*currentTask\.title\s*/)
 ```
 
 Your `formInputValuesUpdated` variable should check if `titleInput.value` is not equal to `currentTask.title` or `dateInput.value` is not equal to `currentTask.date`.
 
 ```js
-assert.match(code, /const\s*formInputValuesUpdated\s*=\s*titleInput\.value\s*!==\s*currentTask\.title\s*\|\|\s*dateInput\.value\s*!==\s*currentTask\.date/)
+assert.match(code, /const\s+formInputValuesUpdated\s*=\s*titleInput\.value\s*!==\s*currentTask\.title\s*\|\|\s*dateInput\.value\s*!==\s*currentTask\.date/)
 ```
 
 Your `formInputValuesUpdated` variable should have the value `titleInput.value !== currentTask.title || dateInput.value !== currentTask.date || descriptionInput.value !== currentTask.description`.
 
 ```js
-assert.match(code, /const\s*formInputValuesUpdated\s*=\s*titleInput\.value\s*!==\s*currentTask\.title\s*\|\|\s*dateInput\.value\s*!==\s*currentTask\.date\s*\|\|\s*descriptionInput\.value\s*!==\s*currentTask\.description;?/)
+assert.match(code, /const\s+formInputValuesUpdated\s*=\s*titleInput\.value\s*!==\s*currentTask\.title\s*\|\|\s*dateInput\.value\s*!==\s*currentTask\.date\s*\|\|\s*descriptionInput\.value\s*!==\s*currentTask\.description;?/)
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-localstorage-by-building-a-todo-app/64ff0313700dad264d19dfe4.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-localstorage-by-building-a-todo-app/64ff0313700dad264d19dfe4.md
index 265980e53e8..7e2832ff7e0 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-localstorage-by-building-a-todo-app/64ff0313700dad264d19dfe4.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-localstorage-by-building-a-todo-app/64ff0313700dad264d19dfe4.md
@@ -16,7 +16,7 @@ Use the `getItem()` method to retrieve the `myTaskArr` array and assign it to th
 You should use `const` to create a `getTaskArr` variable and assign `localStorage.getItem("data")` to it.
 
 ```js
-assert.match(code, /const\s*getTaskArr\s*=\s*localStorage\.getItem\(('|")data\1\);?/)
+assert.match(code, /const\s+getTaskArr\s*=\s*localStorage\.getItem\(('|")data\1\);?/)
 ```
 
 You should log the `getTaskArr` variable to the console.
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-localstorage-by-building-a-todo-app/64ff04cc33779427a6412449.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-localstorage-by-building-a-todo-app/64ff04cc33779427a6412449.md
index 036d3a756f9..6726683e63a 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-localstorage-by-building-a-todo-app/64ff04cc33779427a6412449.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-localstorage-by-building-a-todo-app/64ff04cc33779427a6412449.md
@@ -18,7 +18,7 @@ Check the console to see the difference between `getTaskArr` and `getTaskObj`.
 You should use `const` to create a `getTaskArrObj` variable and assign it to `JSON.parse(localStorage.getItem('data'));`.
 
 ```js
-assert.match(code, /const\s*getTaskArrObj\s*=\s*JSON\.parse\(localStorage\.getItem\(('|")data\1\)\);?/)
+assert.match(code, /const\s+getTaskArrObj\s*=\s*JSON\.parse\(localStorage\.getItem\(('|")data\1\)\);?/)
 ```
 
 You should log the `getTaskArrObj` variable to the console.
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-localstorage-by-building-a-todo-app/64ff24b80431f62ec6b93f65.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-localstorage-by-building-a-todo-app/64ff24b80431f62ec6b93f65.md
index 049473a1c75..597ce9e1b9c 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-localstorage-by-building-a-todo-app/64ff24b80431f62ec6b93f65.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-localstorage-by-building-a-todo-app/64ff24b80431f62ec6b93f65.md
@@ -14,7 +14,7 @@ Remove the `myTaskArr` array and all of the code for `localStorage` because you
 You should remove `myTaskArr` and all the code related to `localStorage` that you've just learned.
 
 ```js
-assert.notMatch(code, /const\s*myTaskArr\s*=\s*\[\s*\{\s*task:\s"Walk\s*the\s*Dog",\s*date:\s*"22-04-2022"\s*\},\s*\{\s*task:\s"Read\s*some\s*books",\s*date:\s*"02-11-2023"\s*\},\s*\{\s*task:\s"Watch\s*football",\s*date:\s*"10-08-2021"\s*\},\s*\];?\s*localStorage\.setItem\("data", JSON\.stringify\(myTaskArr\)\);\s*localStorage\.clear\(\);?\s*const\s*getTaskArr\s*=\s*localStorage\.getItem\("data"\)\s*console\.log\(getTaskArr\)\s*const\s*getTaskArrObj\s*=\s*JSON\.parse\(localStorage\.getItem\("data"\)\);?\s*console\.log\(getTaskArrObj\);?/)
+assert.notMatch(code, /const\s+myTaskArr\s*=\s*\[\s*\{\s*task:\s"Walk\s*the\s*Dog",\s*date:\s*"22-04-2022"\s*\},\s*\{\s*task:\s"Read\s*some\s*books",\s*date:\s*"02-11-2023"\s*\},\s*\{\s*task:\s"Watch\s*football",\s*date:\s*"10-08-2021"\s*\},\s*\];?\s*localStorage\.setItem\("data", JSON\.stringify\(myTaskArr\)\);\s*localStorage\.clear\(\);?\s*const\s+getTaskArr\s*=\s*localStorage\.getItem\("data"\)\s*console\.log\(getTaskArr\)\s*const\s+getTaskArrObj\s*=\s*JSON\.parse\(localStorage\.getItem\("data"\)\);?\s*console\.log\(getTaskArrObj\);?/)
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-localstorage-by-building-a-todo-app/650048b0764f9c1b798200e2.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-localstorage-by-building-a-todo-app/650048b0764f9c1b798200e2.md
index 0ee6361b9b7..083fa8593ae 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-localstorage-by-building-a-todo-app/650048b0764f9c1b798200e2.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-localstorage-by-building-a-todo-app/650048b0764f9c1b798200e2.md
@@ -16,7 +16,7 @@ Set `taskData` to the retrieval of `data` from local storage **or** an empty arr
 You should set the `taskData` variable to `JSON.parse(localStorage.getItem("data")) || [];`.
 
 ```js
-assert.match(code, /const\s*taskData\s*=\s*JSON.parse\(localStorage\.getItem\(('|")data\1\)\)\s*\|\|\s*\[\];?/)
+assert.match(code, /const\s+taskData\s*=\s*JSON.parse\(localStorage\.getItem\(('|")data\1\)\)\s*\|\|\s*\[\];?/)
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-regular-expressions-by-building-a-spam-filter/641ce3dcd0aec8309fbc9971.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-regular-expressions-by-building-a-spam-filter/641ce3dcd0aec8309fbc9971.md
index 6c2e2121b80..a4c01ebb4ae 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-regular-expressions-by-building-a-spam-filter/641ce3dcd0aec8309fbc9971.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-regular-expressions-by-building-a-spam-filter/641ce3dcd0aec8309fbc9971.md
@@ -18,7 +18,7 @@ Then, try entering some messages on your page and see the result.
 Your `isSpam()` function should implicitly return the result of `msg.match(helpRegex)`.
 
 ```js
-assert.match(code, /const\s*isSpam\s*=\s*(\(\s*msg\s*\)|msg)\s*=>\s*msg\.match\(\s*helpRegex\s*\)/);
+assert.match(code, /const\s+isSpam\s*=\s*(\(\s*msg\s*\)|msg)\s*=>\s*msg\.match\(\s*helpRegex\s*\)/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-regular-expressions-by-building-a-spam-filter/641ceed81533263283835c3d.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-regular-expressions-by-building-a-spam-filter/641ceed81533263283835c3d.md
index 60ed5a8595a..e81c5ccc6cf 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-regular-expressions-by-building-a-spam-filter/641ceed81533263283835c3d.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-regular-expressions-by-building-a-spam-filter/641ceed81533263283835c3d.md
@@ -18,7 +18,7 @@ Then, try entering some messages on your page and see the result.
 Your `isSpam()` function should implicitly return the result of `helpRegex.test(msg)`.
 
 ```js
-assert.match(code, /const\s*isSpam\s*=\s*(\(\s*msg\s*\)|msg)\s*=>\s*helpRegex\.test\(\s*msg\s*\)/);
+assert.match(code, /const\s+isSpam\s*=\s*(\(\s*msg\s*\)|msg)\s*=>\s*helpRegex\.test\(\s*msg\s*\)/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-regular-expressions-by-building-a-spam-filter/6421f6f59d665615c9e94d8a.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-regular-expressions-by-building-a-spam-filter/6421f6f59d665615c9e94d8a.md
index bfbdaa2e30b..13d99f3f7e9 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-regular-expressions-by-building-a-spam-filter/6421f6f59d665615c9e94d8a.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-regular-expressions-by-building-a-spam-filter/6421f6f59d665615c9e94d8a.md
@@ -16,7 +16,7 @@ Start by declaring a `denyList` variable. Assign it an array containing your `he
 You should use `const` to declare a `denyList` variable.
 
 ```js
-assert.match(code, /const\s*denyList\s*=/);
+assert.match(code, /const\s+denyList\s*=/);
 ```
 
 Your `denyList` variable should be an array.
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-regular-expressions-by-building-a-spam-filter/6421f98f4999d1179ce37cb4.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-regular-expressions-by-building-a-spam-filter/6421f98f4999d1179ce37cb4.md
index 0d884ee0ab3..dc12f04cc7c 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-regular-expressions-by-building-a-spam-filter/6421f98f4999d1179ce37cb4.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-regular-expressions-by-building-a-spam-filter/6421f98f4999d1179ce37cb4.md
@@ -16,25 +16,25 @@ Use `regex` as the parameter for the callback function, for clarity.
 Your `isSpam` function should implicitly return the result of `denyList.some()`.
 
 ```js
-assert.match(code, /const\s*isSpam\s*=\s*\(?\s*msg\s*\)?\s*=>\s*/)
+assert.match(code, /const\s+isSpam\s*=\s*\(?\s*msg\s*\)?\s*=>\s*/)
 ```
 
 Your `.some()` method should use arrow syntax for the callback.
 
 ```js
-assert.match(code, /const\s*isSpam\s*=\s*\(?\s*msg\s*\)?\s*=>\s*denyList\.some\(\s*\(?.*\)?\s*=>/);
+assert.match(code, /const\s+isSpam\s*=\s*\(?\s*msg\s*\)?\s*=>\s*denyList\.some\(\s*\(?.*\)?\s*=>/);
 ```
 
 Your `.some()` callback should take `regex` as the parameter.
 
 ```js
-assert.match(code, /const\s*isSpam\s*=\s*\(?\s*msg\s*\)?\s*=>\s*denyList\.some\(\s*\(?\s*regex\s*\)?\s*=>/);
+assert.match(code, /const\s+isSpam\s*=\s*\(?\s*msg\s*\)?\s*=>\s*denyList\.some\(\s*\(?\s*regex\s*\)?\s*=>/);
 ```
 
 Your `.some()` callback should implicitly return the result of testing `msg` on `regex`.
 
 ```js
-assert.match(code, /const\s*isSpam\s*=\s*\(?\s*msg\s*\)?\s*=>\s*denyList\.some\(\s*\(?\s*regex\s*\)?\s*=>\s*regex\.test\(\s*msg\s*\)\s*\)/);
+assert.match(code, /const\s+isSpam\s*=\s*\(?\s*msg\s*\)?\s*=>\s*denyList\.some\(\s*\(?\s*regex\s*\)?\s*=>\s*regex\.test\(\s*msg\s*\)\s*\)/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-regular-expressions-by-building-a-spam-filter/642205fa6376c818f78bb24e.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-regular-expressions-by-building-a-spam-filter/642205fa6376c818f78bb24e.md
index 38360e8284d..77900f40a8d 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-regular-expressions-by-building-a-spam-filter/642205fa6376c818f78bb24e.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-regular-expressions-by-building-a-spam-filter/642205fa6376c818f78bb24e.md
@@ -16,7 +16,7 @@ Start by declaring a `dollarRegex` variable, and assign it a case-insensitive re
 You should use `const` to declare a `dollarRegex` variable.
 
 ```js
-assert.match(code, /const\s*dollarRegex\s*=/);
+assert.match(code, /const\s+dollarRegex\s*=/);
 ```
 
 Your `dollarRegex` variable should be a regular expression.
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-regular-expressions-by-building-a-spam-filter/642213bf8d38b0227ed6ab0b.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-regular-expressions-by-building-a-spam-filter/642213bf8d38b0227ed6ab0b.md
index ffff341569f..6dead02447f 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-regular-expressions-by-building-a-spam-filter/642213bf8d38b0227ed6ab0b.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-regular-expressions-by-building-a-spam-filter/642213bf8d38b0227ed6ab0b.md
@@ -14,7 +14,7 @@ Your next regular expression will look for strings like `free money`. Start by d
 You should declare a `freeRegex` variable using `const`.
 
 ```js
-assert.match(code, /const\s*freeRegex\s*=/);
+assert.match(code, /const\s+freeRegex\s*=/);
 ```
 
 Your `freeRegex` variable should be a regular expression.