diff --git a/.nvmrc b/.nvmrc
new file mode 100644
index 0000000..e44a38e
--- /dev/null
+++ b/.nvmrc
@@ -0,0 +1 @@
+v18.12.1
diff --git a/index.html b/index.html
new file mode 100644
index 0000000..5c1783b
--- /dev/null
+++ b/index.html
@@ -0,0 +1,48 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <title>Socket.IO chat</title>
+    <style>
+      body { margin: 0; padding-bottom: 3rem; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; }
+
+      #form { background: rgba(0, 0, 0, 0.15); padding: 0.25rem; position: fixed; bottom: 0; left: 0; right: 0; display: flex; height: 3rem; box-sizing: border-box; backdrop-filter: blur(10px); }
+      #input { border: none; padding: 0 1rem; flex-grow: 1; border-radius: 2rem; margin: 0.25rem; }
+      #input:focus { outline: none; }
+      #form > button { background: #333; border: none; padding: 0 1rem; margin: 0.25rem; border-radius: 3px; outline: none; color: #fff; }
+
+      #messages { list-style-type: none; margin: 0; padding: 0; }
+      #messages > li { padding: 0.5rem 1rem; }
+      #messages > li:nth-child(odd) { background: #efefef; }
+    </style>
+  </head>
+  <body>
+    <ul id="messages"></ul>
+    <form id="form" action="">
+      <input id="input" autocomplete="off" /><button>Send</button>
+    </form>
+  </body>
+
+  <script src="/socket.io/socket.io.js"></script>
+  <script>
+    var socket = io();
+  
+    var messages = document.getElementById('messages');
+    var form = document.getElementById('form');
+    var input = document.getElementById('input');
+  
+    form.addEventListener('submit', function(e) {
+      e.preventDefault();
+      if (input.value) {
+        socket.emit('chat message', input.value);
+        input.value = '';
+      }
+    });
+  
+    socket.on('chat message', function(msg) {
+      var item = document.createElement('li');
+      item.textContent = msg;
+      messages.appendChild(item);
+      window.scrollTo(0, document.body.scrollHeight);
+    });
+  </script>
+</html>
\ No newline at end of file
diff --git a/index.js b/index.js
new file mode 100644
index 0000000..20deba5
--- /dev/null
+++ b/index.js
@@ -0,0 +1,26 @@
+const express = require('express');
+const app = express();
+const http = require('http');
+const server = http.createServer(app);
+const { Server } = require("socket.io");
+const io = new Server(server);
+
+app.get('/', (req, res) => {
+  res.sendFile(__dirname + '/index.html');
+});
+
+io.on('connection', (socket) => {
+  console.log('a user connected');
+  
+  socket.on('disconnect', () => {
+    console.log('user disconnected');
+  });
+
+  socket.on('chat message', (msg) => {
+    io.emit('chat message', msg);
+  });
+});
+
+server.listen(3000, () => {
+  console.log('listening on *:3000');
+});
\ No newline at end of file
diff --git a/jest.config.js b/jest.config.js
new file mode 100644
index 0000000..b413e10
--- /dev/null
+++ b/jest.config.js
@@ -0,0 +1,5 @@
+/** @type {import('ts-jest').JestConfigWithTsJest} */
+module.exports = {
+  preset: 'ts-jest',
+  testEnvironment: 'node',
+};
\ No newline at end of file
diff --git a/package.json b/package.json
new file mode 100644
index 0000000..b87910a
--- /dev/null
+++ b/package.json
@@ -0,0 +1,41 @@
+{
+  "name": "yaman",
+  "version": "1.0.0",
+  "description": "The thread-based social network",
+  "main": "index.js",
+  "directories": {
+    "doc": "docs"
+  },
+  "scripts": {
+    "start": "node index.js",
+    "test": "jest"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/AlexRuiz7/CC.git"
+  },
+  "keywords": [
+    "social",
+    "network",
+    "twitter",
+    "discord"
+  ],
+  "author": "Alejandro Ruiz Becerra",
+  "license": "GPL-3.0-or-later",
+  "bugs": {
+    "url": "https://github.com/AlexRuiz7/CC/issues"
+  },
+  "homepage": "https://github.com/AlexRuiz7/CC#readme",
+  "engines": {
+    "npm": ">=8.0.0",
+    "node": ">=18.0.0"
+  },
+  "dependencies": {
+    "express": "^4.18.2",
+    "socket.io": "^4.5.4"
+  },
+  "devDependencies": {
+    "jest": "^29.3.1",
+    "ts-jest": "^29.0.3"
+  }
+}
diff --git a/test/sum.js b/test/sum.js
new file mode 100644
index 0000000..6fb269a
--- /dev/null
+++ b/test/sum.js
@@ -0,0 +1,4 @@
+function sum(a, b) {
+  return a + b;
+}
+module.exports = sum;
\ No newline at end of file
diff --git a/test/sum.test.js b/test/sum.test.js
new file mode 100644
index 0000000..df0dd09
--- /dev/null
+++ b/test/sum.test.js
@@ -0,0 +1,5 @@
+const sum = require('./sum');
+
+test('adds 1 + 2 to equal 3', () => {
+  expect(sum(1, 2)).toBe(3);
+});
\ No newline at end of file
