Firebase

# source https://www.youtube.com/watch?v=DYfP-UIKxH0
# install node and npm
npm i -g firebase-tools
mkdir firebase-sample
firebase login
firebase init

Typescript: https://stackify.com/typescript-vs-javascript-migrate/

Implement the functions ...

Save configuration: https://firebase.google.com/docs/functions/config-env

# config secrets
firebase functions:config:set facebook.healthengineer.verifytoken=$(lpass show facebook-healthengineer --password)
#check
firebase functions:config:get