Entry point

Hello,

I am trying to understand the flow in Jitsi Meet, like the entry point and how it starts executing/rendering.
I cannot figure out where to start looking from, can you help me?
There is the react directory, but also there is conference.js, ConferenceEvents.js, connection.js, and I don’t understand why they exist apart from react

The web entry point is app.js. jitsi-meet for web is still not fully in react.