The server connects to a MySQL database hosted by AWS's RDS service. So before you can connect, you need to set the needed environment variables:
RDS_HOSTNAME
RDS_USERNAME
RDS_PASSWORD
RDS_PORT
Start by running:
npm install
Then to build and start, run:
npm run dev
This should install the necessary packages, build and compile the typescript code to javascript and then have NodeJS run our builed project.