Why does my code work on my computer but not others

I was told this GitHub code: https://github.com/aoljaca/jamming

does not work on someone’s computer, but it works on mine.

Why is this? Do I need to do something? It is a React App

does the computer you are trying to run it in have npm and node installed?

Yes it works on my computer but if someone else tried to run it by getting the code from github and they said it did not work for them

Your saying it’s because they don’t have node and npm installed?

To run a react app they most definitely need those two, yup.