diff --git a/lab-nicole/.eslintignore b/lab-nicole/.eslintignore
new file mode 100644
index 0000000..05b1cf3
--- /dev/null
+++ b/lab-nicole/.eslintignore
@@ -0,0 +1,5 @@
+**/node_modules/*
+**/vendor/*
+**/*.min.js
+**/coverage/*
+**/build/*
diff --git a/lab-nicole/.eslintrc.json b/lab-nicole/.eslintrc.json
new file mode 100644
index 0000000..886827f
--- /dev/null
+++ b/lab-nicole/.eslintrc.json
@@ -0,0 +1,27 @@
+{
+  "env": {
+    "browser": true,
+    "node": true,
+    "commonjs": true,
+    "jest": true,
+    "es6": true
+  },
+  "globals": {
+    "err": true,
+    "req": true,
+    "res": true,
+    "next": true
+  },
+  "extends": "eslint:recommended",
+  "parserOptions": {
+    "sourceType": "module"
+  },
+  "rules": {
+    "no-console": "off",
+    "indent": [ "error", 2 ],
+    "quotes": ["error", "single", { "allowTemplateLiterals": true }],
+    "comma-dangle": ["error", "always-multiline"],
+    "semi": [ "error", "always" ],
+    "linebreak-style": ["error", "unix"]
+  }
+}
diff --git a/lab-nicole/.gitignore b/lab-nicole/.gitignore
new file mode 100644
index 0000000..4745950
--- /dev/null
+++ b/lab-nicole/.gitignore
@@ -0,0 +1,145 @@
+# 401 JS
+db
+**.env
+temp
+build
+
+# Created by https://www.gitignore.io/api/vim,osx,node,linux,windows
+### Linux ###
+*~
+
+# temporary files which can be created if a process still has a handle open of a deleted file
+.fuse_hidden*
+
+# KDE directory preferences
+.directory
+
+# Linux trash folder which might appear on any partition or disk
+.Trash-*
+
+# .nfs files are created when an open file is removed but is still being accessed
+.nfs*
+
+### Node ###
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+lib-cov
+
+# Coverage directory used by tools like istanbul
+coverage
+
+# nyc test coverage
+.nyc_output
+
+# Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files)
+.grunt
+
+# Bower dependency directory (https://bower.io/)
+bower_components
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons (http://nodejs.org/api/addons.html)
+build/Release
+
+# Dependency directories
+node_modules/
+jspm_packages/
+
+# Typescript v1 declaration files
+typings/
+
+# Optional npm cache directory
+.npm
+
+# Optional eslint cache
+.eslintcache
+
+# Optional REPL history
+.node_repl_history
+
+# Output of 'npm pack'
+*.tgz
+
+# Yarn Integrity file
+.yarn-integrity
+
+# dotenv environment variables file
+.env
+
+
+### OSX ###
+*.DS_Store
+.AppleDouble
+.LSOverride
+
+# Icon must end with two \r
+Icon
+
+# Thumbnails
+._*
+
+# Files that might appear in the root of a volume
+.DocumentRevisions-V100
+.fseventsd
+.Spotlight-V100
+.TemporaryItems
+.Trashes
+.VolumeIcon.icns
+.com.apple.timemachine.donotpresent
+
+# Directories potentially created on remote AFP share
+.AppleDB
+.AppleDesktop
+Network Trash Folder
+Temporary Items
+.apdisk
+
+### Vim ###
+# swap
+[._]*.s[a-v][a-z]
+[._]*.sw[a-p]
+[._]s[a-v][a-z]
+[._]sw[a-p]
+# session
+Session.vim
+# temporary
+.netrwhist
+# auto-generated tag files
+tags
+
+### Windows ###
+# Windows thumbnail cache files
+Thumbs.db
+ehthumbs.db
+ehthumbs_vista.db
+
+# Folder config file
+Desktop.ini
+
+# Recycle Bin used on file shares
+$RECYCLE.BIN/
+
+# Windows Installer files
+*.cab
+*.msi
+*.msm
+*.msp
+
+# Windows shortcuts
+*.lnk
+
+# End of https://www.gitignore.io/api/vim,osx,node,linux,windows
diff --git a/lab-nicole/index.js b/lab-nicole/index.js
new file mode 100644
index 0000000..fc7450b
--- /dev/null
+++ b/lab-nicole/index.js
@@ -0,0 +1,10 @@
+'use strict';
+
+const greet = require('./lib/greet.js');
+const arithmetic = require('./lib/arithmetic.js');
+
+console.log('greet module', greet);
+greet('nicole');
+console.log('arithmetic module', arithmetic);
+console.log(arithmetic.add(9, 3));
+console.log(arithmetic.sub(3, 1));
\ No newline at end of file
diff --git a/lab-nicole/lib/arithmetic.js b/lab-nicole/lib/arithmetic.js
new file mode 100644
index 0000000..88b2f65
--- /dev/null
+++ b/lab-nicole/lib/arithmetic.js
@@ -0,0 +1,16 @@
+'use strict';
+
+module.exports = exports = {};
+
+exports.add = function(a, b) {
+  if (arguments.length !== 2) throw new Error('there were not two arguments passed in');
+  if (typeof a !== 'number' || typeof b !== 'number') return null;
+  return a + b;
+}
+
+
+exports.sub = function(a, b) {
+  if (arguments.length !== 2) throw new Error('there was not two arguments passed in');
+  if (typeof a !== 'number' || typeof b !== 'number') return null;
+  return a - b;
+}
\ No newline at end of file
diff --git a/lab-nicole/lib/greet.js b/lab-nicole/lib/greet.js
new file mode 100644
index 0000000..554c70e
--- /dev/null
+++ b/lab-nicole/lib/greet.js
@@ -0,0 +1,7 @@
+'use strict';
+
+module.exports = function (name) {
+  if (arguments.length !== 1) throw new Error('did not receive just one argument');
+  if (typeof name !== 'string') return null;
+  return `hello ${name}`;
+}
\ No newline at end of file
diff --git a/lab-nicole/readme.md b/lab-nicole/readme.md
new file mode 100644
index 0000000..e79be47
--- /dev/null
+++ b/lab-nicole/readme.md
@@ -0,0 +1,7 @@
+## Day 1 - Module Tests
+
+This file has 2 exported modules, the arithmetic and the greet module.
+
+Greet is a singular function with an arity of 1, an expected data type of string, and an expected output of printing 'hello ' plus the passed in string argument. If the argument passed in is not a string, it will return null. If there is more or less than one argument passed in, an error will be thrown with the corresponding error message.
+
+Arithmetic has two functions, add and sub. For both add and sub, they have an arity of two. If more or less than 2 arguments are passed in, the functions will throw an error with a corresponding error message. The data types they expect are numbers. If either argument passed is not a number, then the functions will return null.
\ No newline at end of file
diff --git a/lab-nicole/test/arithmetic-test.js b/lab-nicole/test/arithmetic-test.js
new file mode 100644
index 0000000..98b7953
--- /dev/null
+++ b/lab-nicole/test/arithmetic-test.js
@@ -0,0 +1,27 @@
+'use strict';
+
+const arithmetic = require('../lib/arithmetic.js');
+const assert = require('assert');
+
+describe('Arithmetic Module', function() {
+  describe('#Add', function() {
+    it('should return the sum of the two numbers passed in to it', function() {
+      assert.ok(arithmetic.add(5, 7) === 12, '5 + 7 was not equal to 12');
+      assert.ok(arithmetic.add(-4, 2) === -2, '-4 and 2 did not equal -2');
+    })
+    it('should return null if either agument passed was not a number', function() {
+      assert.ok(arithmetic.add('woo', 8) === null, 'passed in a string, did not return null');
+      assert.ok(arithmetic.add(2, true) === null, 'passed in a boolean, did not return null');
+    })
+  })
+  describe('#Sub', function() {
+    it('should return the subtraction of the two numbers passed in to it', function () {
+      assert.ok(arithmetic.sub(9, 3) === 6, '9 and 3 did not equal 6');
+      assert.ok(arithmetic.sub(-4, 3) === -7, '-4 and 3 did not equal -7');
+    })
+    it('should return null if either agument passed was not a number', function() {
+      assert.ok(arithmetic.sub('hi', 0) === null, 'passed in string, did not return null');
+      assert.ok(arithmetic.sub(1, false) === null, 'passed in boolean, did not return null');
+    })
+  })
+})
\ No newline at end of file
diff --git a/lab-nicole/test/greet-test.js b/lab-nicole/test/greet-test.js
new file mode 100644
index 0000000..12661ba
--- /dev/null
+++ b/lab-nicole/test/greet-test.js
@@ -0,0 +1,19 @@
+'use strict';
+
+const greet = require('../lib/greet.js');
+const assert = require('assert');
+
+describe('Greet Module', function() {
+  describe('#Greet', function() {
+    it('should have one argument', function() {
+      assert.ok(greet.length === 1, 'number of arguments not equal to 1');
+    });
+    it('should return hello world', function() {
+      assert.ok(greet('world') === 'hello world', 'not equal to hello world');
+    });
+    it('should return null if input is not a string', function() {
+      assert.ok(greet(7) === null, 'passing function a number does not return null');
+    });
+  });
+  
+})
\ No newline at end of file