https://codeburst.io/build-a-chat-app-with-sentiment-analysis-using-next-js-c43ebf3ea643

Realtime applications have been around for quite a long time as we can see in contexts such as multi-player games, realtime collaboration services, instant messaging services, realtime data analytics tools, to mention a few. As a result, several technologies have been developed over the years to tackle and simplify some of the most challenging aspects of building apps that are sensitive to changes in realtime.

In this tutorial, we’ll build a very simple realtime chat application with sentiments. With sentiment analysis, we will be able to detect the mood of a person based on the words they use in their chat messages.