My problem is exactly as in title. When I write anything, VS Code suggests nothing but things that I've already written.
It suggested firebase. Because above I wrote const functions = require('firebase-functions'); It recognizes firebase from there.
Whenever I type something that I've not wrote before, it fails to suggest. Also even if I have all required node_modules, I cannot see source code from index.js.
I don't know if it helps but here is how my project looks like:
Edit: I switch IDE from VS Code to Webstrom. Now it's working.


