Push Notifications Using APNs

I have built my app using expo for android:

My iOS app however is built using swift.

From my iOS app when i send a message, My android (expo) app receives a push notification.
But when I send a message from android, my iOS device doesn’t receive push notifications.
iOS to iOS also works fine.

My push notifications are working using fcm and APNs.

Im following these instructions

Im getting stuck on the following:

const jwt = require("jsonwebtoken");


const http2 = require('http2');

Which npm packages do I need to install to use jsonwebtoken and http2.