diff --git a/.eslintrc.js b/.eslintrc.js
index 87d36ba..9f0c23f 100644
--- a/.eslintrc.js
+++ b/.eslintrc.js
@@ -14,3 +14,4 @@ module.exports = {
     'prettier/prettier': ['error']
   }
 }
+
diff --git a/.husky/pre-commit b/.husky/pre-commit
deleted file mode 100644
index 6b54e0b..0000000
--- a/.husky/pre-commit
+++ /dev/null
@@ -1,4 +0,0 @@
-#!/bin/sh
-. "$(dirname "$0")/_/husky.sh"
-
-npx eslint src
diff --git a/.idea/.gitignore b/.idea/.gitignore
new file mode 100644
index 0000000..26d3352
--- /dev/null
+++ b/.idea/.gitignore
@@ -0,0 +1,3 @@
+# Default ignored files
+/shelf/
+/workspace.xml
diff --git a/.idea/js-fundamentals-primitive-data-types.iml b/.idea/js-fundamentals-primitive-data-types.iml
new file mode 100644
index 0000000..d6ebd48
--- /dev/null
+++ b/.idea/js-fundamentals-primitive-data-types.iml
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$" />
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>
\ No newline at end of file
diff --git a/.idea/misc.xml b/.idea/misc.xml
new file mode 100644
index 0000000..6f29fee
--- /dev/null
+++ b/.idea/misc.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_21" default="true" project-jdk-name="21" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/out" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/modules.xml b/.idea/modules.xml
new file mode 100644
index 0000000..7d5cda2
--- /dev/null
+++ b/.idea/modules.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/.idea/js-fundamentals-primitive-data-types.iml" filepath="$PROJECT_DIR$/.idea/js-fundamentals-primitive-data-types.iml" />
+    </modules>
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
new file mode 100644
index 0000000..35eb1dd
--- /dev/null
+++ b/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="" vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/spec/advanced/strings-adv.spec.js b/spec/advanced/strings-adv.spec.js
index ad78633..8df581b 100644
--- a/spec/advanced/strings-adv.spec.js
+++ b/spec/advanced/strings-adv.spec.js
@@ -1,3 +1,4 @@
+// eslint-disable-next-line no-unused-vars
 const {
   cityIndex,
   citySubstring,
diff --git a/src/extensions/more-data-types.js b/src/extensions/more-data-types.js
index 64cde7b..093a58b 100644
--- a/src/extensions/more-data-types.js
+++ b/src/extensions/more-data-types.js
@@ -1,22 +1,22 @@
 // TODO: Replace the empty string in the lines below using Javascript with the correct data types
 
 // 1. Set this variable to be null
-const nullVariable = ''
+const nullVariable = null
 
 // 2. Set this variable to be true
-const trueVariable = ''
+const trueVariable = true
 
 // 2. Set this variable to be the opposite of the trueVariable (ie. false);
-const falseVariable = ''
+const falseVariable = false
 
 // 3. Set this variable to be undefined
-const undefinedVariable = ''
+const undefinedVariable = undefined
 
 // 4. get the typeof each of the above variables
 // hint you can use typeof variable to return a string of the variable type
-const typeOfTrueVariable = ''
-const typeOfFalseVariable = ''
-const typeOfUndefinedVariable = ''
+const typeOfTrueVariable = typeof trueVariable
+const typeOfFalseVariable = typeof falseVariable
+const typeOfUndefinedVariable = typeof undefinedVariable
 
 // do not edit the exported object.
 module.exports = {
diff --git a/src/numbers.js b/src/numbers.js
index ee37fa1..f5e573e 100644
--- a/src/numbers.js
+++ b/src/numbers.js
@@ -12,22 +12,22 @@ const numThree = 32
 //       NOT myAnswer = 336
 
 // 1. Set this variable to numOne added to numTwo
-const numOnePlusNumTwo = NaN
+const numOnePlusNumTwo = numOne + numTwo
 
 // 2. Set this variable to numThree multiplied by numTwo
-const numThreeTimesNumTwo = NaN
+const numThreeTimesNumTwo = numThree * numTwo
 
 // 3. Set this variable to numThree divided by numOne
-const numThreeDividedByNumOne = NaN
+const numThreeDividedByNumOne = numThree / numOne
 
 // 4. Set this variable to numThree minus numOne
-const numThreeMinusNumOne = NaN
+const numThreeMinusNumOne = numThree - numOne
 
 // 5. Set this variable to the sum of numOne, numTwo and numThree
-const sum = NaN
+const sum = numOne + numTwo + numThree
 
 // 6. Set this variable to the sum of (numOne, numTwo, numThree) divided by numOne
-const numBytes = NaN
+const numBytes = sum / numOne
 
 // do not edit the exported object.
 module.exports = {
diff --git a/src/strings.js b/src/strings.js
index a846086..ff4e1e8 100644
--- a/src/strings.js
+++ b/src/strings.js
@@ -13,16 +13,16 @@ const secondName = 'Smith'
 //       NOT twoJanes = "JaneJane"
 
 // 1. Set this variable to firstName and secondName concatenated
-const fullName = null
+const fullName = firstName + ' ' + secondName
 
 // 2. Set this variable to the 10th character of the alphabet variable
-const tenthCharacterOfAlphabet = null
+const tenthCharacterOfAlphabet = alphabet[9]
 
 // 3. Set this variable by calling a method on the alphabet variable to transform it to lower case
-const lowerCaseAlphabet = null
+const lowerCaseAlphabet = alphabet.toLowerCase()
 
 // 4. Set this variable by using a property on the alphabet variable to get it's length
-const numberOfLettersInAlphabet = null
+const numberOfLettersInAlphabet = alphabet.length
 
 // do not edit the exported object.
 module.exports = {