log_http_requests.js

const admin = require('firebase-admin');

function enableRequestLogger() {
    const https = require('https');
    const original = https.request
    https.request = function(options, callback){
      console.log(`${new Date().toISOString()} ${options.method} ${options.protocol}//${options.hostname}${options.path}`);
      return original(options, callback);
    }
}

enableRequestLogger();

const app = admin.initializeApp();
(async () => {
    const messageId = await admin.messaging().send({
        topic: 'test',
        notification: {
            title: 'Hello world!',
        },
    });
    console.log(messageId);
    await app.delete();
})();