Face-Recognition-JavaScript How do I run this app?

I installed all the packages and dependencies with sudo npm install -g nodemon. Then when I want to run the project with node script.js, this is what I get:

npm ERR! code ENOENT
npm ERR! syscall open
npm ERR! path /Users/username/Downloads/Face-Recognition-JavaScript-master/package.json
npm ERR! errno -2
npm ERR! enoent ENOENT: no such file or directory, open '/Users/username/Downloads/Face-Recognition-JavaScript-master/package.json'
npm ERR! enoent This is related to npm not being able to find a file.
npm ERR! enoent 

npm ERR! A complete log of this run can be found in:
npm ERR!     /Users/username/.npm/_logs/2020-08-24T06_01_03_368Z-debug.log
username@Users-MBP Face-Recognition-JavaScript-master % node script.js
/Users/username/Downloads/Face-Recognition-JavaScript-master/script.js:1
const imageUpload = document.getElementById('imageUpload')
                    ^

ReferenceError: document is not defined
    at Object.<anonymous> (/Users/username/Downloads/Face-Recognition-JavaScript-master/script.js:1:21)
    at Module._compile (internal/modules/cjs/loader.js:1133:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1153:10)
    at Module.load (internal/modules/cjs/loader.js:977:32)
    at Function.Module._load (internal/modules/cjs/loader.js:877:14)
    at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:74:12)
    at internal/main/run_main_module.js:18:47

How do I run this app?