diff --git a/lab-khalid/.eslintrc b/lab-khalid/.eslintrc
new file mode 100644
index 0000000..8dc6807
--- /dev/null
+++ b/lab-khalid/.eslintrc
@@ -0,0 +1,21 @@
+{
+  "rules": {
+    "no-console": "off",
+    "indent": [ "error", 2 ],
+    "quotes": [ "error", "single" ],
+    "semi": ["error", "always"],
+    "linebreak-style": [ "error", "unix" ]
+  },
+  "env": {
+    "es6": true,
+    "node": true,
+    "mocha": true,
+    "jasmine": true
+  },
+  "ecmaFeatures": {
+    "modules": true,
+    "experimentalObjectRestSpread": true,
+    "impliedStrict": true
+  },
+  "extends": "eslint:recommended"
+}
diff --git a/lab-khalid/.gitignore b/lab-khalid/.gitignore
new file mode 100644
index 0000000..46e5ad0
--- /dev/null
+++ b/lab-khalid/.gitignore
@@ -0,0 +1,127 @@
+# Created by https://www.gitignore.io/api/node,vim,macos,linux,windows
+
+node_modules/
+
+### Node ###
+# Logs
+logs
+*.log
+npm-debug.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
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons (http://nodejs.org/api/addons.html)
+build/Release
+
+# Dependency directories
+node_modules
+jspm_packages
+
+# 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
+
+
+
+### Vim ###
+# swap
+[._]*.s[a-w][a-z]
+[._]s[a-w][a-z]
+# session
+Session.vim
+# temporary
+.netrwhist
+*~
+# auto-generated tag files
+tags
+
+
+### macOS ###
+*.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
+
+
+### 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*
+
+
+### Windows ###
+# Windows image file caches
+Thumbs.db
+ehthumbs.db
+
+# Folder config file
+Desktop.ini
+
+# Recycle Bin used on file shares
+$RECYCLE.BIN/
+
+# Windows Installer files
+*.cab
+*.msi
+*.msm
+*.msp
+
+# Windows shortcuts
+*.lnk
diff --git a/lab-khalid/gulpfile.js b/lab-khalid/gulpfile.js
new file mode 100644
index 0000000..b32c43f
--- /dev/null
+++ b/lab-khalid/gulpfile.js
@@ -0,0 +1,20 @@
+'use strict';
+
+const gulp = require('gulp');
+const mocha = require('gulp-mocha');
+const eslint = require('gulp-eslint');
+
+gulp.task('test', function(){
+  gulp.src('./test/*-test.js', {read:false})
+  .pipe(mocha({reporter:'spec'}));
+});
+gulp.task('lint', function() {
+  return gulp.src(['**/*.js', '!node_modules/**'])
+  .pipe(eslint())
+  .pipe(eslint.format())
+  .pipe(eslint.failAfterError());
+});
+gulp.task('dev', function() {
+  gulp.watch(['**/*.js', '!node_module'], ['test', 'lint']);
+});
+gulp.task('default', ['dev']);
diff --git a/lab-khalid/index.js b/lab-khalid/index.js
new file mode 100644
index 0000000..ad8a3df
--- /dev/null
+++ b/lab-khalid/index.js
@@ -0,0 +1,5 @@
+'use strict';
+
+const greeting = require('../lab-khalid/lib/greet.js');
+console.log('working');
+greeting.hello(process.argv[2]);
diff --git a/lab-khalid/lib/greet.js b/lab-khalid/lib/greet.js
new file mode 100644
index 0000000..5c5bfff
--- /dev/null
+++ b/lab-khalid/lib/greet.js
@@ -0,0 +1,9 @@
+'use strict';
+
+module.exports = exports = {};
+
+exports.hello = function(name) {
+  if(arguments.length === 0) throw new Error('Name not received');
+  console.log(name);
+  return `Hello, ${name}!`;
+};
diff --git a/lab-khalid/package.json b/lab-khalid/package.json
new file mode 100644
index 0000000..b9e7f5e
--- /dev/null
+++ b/lab-khalid/package.json
@@ -0,0 +1,21 @@
+{
+  "name": "lab-khalid",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "directories": {
+    "test": "test"
+  },
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "",
+  "license": "ISC",
+  "devDependencies": {
+    "chai": "^3.5.0",
+    "gulp": "^3.9.1",
+    "gulp-eslint": "^3.0.1",
+    "gulp-mocha": "^3.0.1",
+    "mocha": "^3.2.0"
+  }
+}
diff --git a/lab-khalid/test/greeting-test.js b/lab-khalid/test/greeting-test.js
new file mode 100644
index 0000000..b7dc86d
--- /dev/null
+++ b/lab-khalid/test/greeting-test.js
@@ -0,0 +1,14 @@
+'use strict';
+
+const greeting = require('../lib/greet.js');
+const expect = require('chai').expect;
+
+
+describe('Greeting module', function() {
+  describe('#hello', function(){
+    it('should return hello khalid', function() {
+      const result = greeting.hello('khalid');
+      expect(result).to.equal('Hello, khalid!');
+    });
+  });
+});