What does npm run do?

 npm run helps to run the scripts defined in package.json, read more: https://stackoverflow.com/questions/49275342/what-npm-run-do

OO vs FP

 Fumbled across this article that explained in simple terms the difference between Object Oriented Program Vs Functional Programming.

https://www.codenewbie.org/blogs/object-oriented-programming-vs-functional-programming

OAuth

 What if a little thing that you learned increases your appetite and inquisitiveness to learn more? I found the following you tube introductory tutorial on OAuth and got into the rabbit hole of learning more. Check it out:

https://www.youtube.com/watch?v=t4-416mg6iU

About OAuth flows from the same presenter:

https://www.youtube.com/watch?v=3pZ3Nh8tgTE

Here's another one from the same author on JWT:

https://www.youtube.com/watch?v=soGRyl9ztjI

Real-time apps

 Could somebody please explain me in simple english what real-time apps mean?

https://www.freecodecamp.org/news/5-ways-to-build-real-time-apps-with-javascript-5f4d8fe259f7/#:~:text=Real%2Dtime%20apps%20are%20those,time%20is%20a%20messaging%20application.