Useful Commands

$ firebase emulators:start --inspect-functions
$ firebase deploy --only hosting,functions

http://localhost:5001/my-web-tester/us-central1/app/api/echo/?message=Hello+World
https://us-central1-my-web-tester.cloudfunctions.net/app/api/echo/?message=Hello+World
https://my-web-tester.web.app/api/echo/?message=Hello+World
https://www.mywebtester.tk/api/echo/?message=Hello+World