Simple chat app using nodeJS for backend with socket.io framework

The description of project idea can be found here

• User is prompted to enter a username when he visits the chat app. The username will be stored in the application
• User can see an input field where he can type a new message
• By pressing the enter key or by clicking on the send button the text will be displayed in the chat box alongside his username (e.g. John Doe: Hello World!)

• The messages will be visible to all the Users that are in the chat app (using WebSockets)
• When a new User joins the chat, a message is displayed to all the existing Users
• Messages are saved in a database
• User can send images, videos and links which will be displayed properly
• User can select and send an emoji
• Users can chat in private
• Users can join channels on specific topics