While leaving my dorm during the Corona lockdown, I had to adapt. Living back at home, having a lot more digital meetings, online classes and job interviews. Only I wasn't the only one doing having this, being a CS student, I also count as IT for our family. To have less distractions I decided to make a simple web-app which shows if people can knock and enter my room, or if they have to stay out.
yarn install
npm start
Wanting to keep things clean, changing the state of the webpage is done browsing (get) localhost:3001/setstate.