Cannot find module '@firebase/app-types/private' - Firebase throws error

Question

I am working on application using angular and firebase. I installed firebase with the instructions given on site and the versions as follows,

\"angularfire2         


        

Answer 1

UPDATE April/2018:

package.json:

"angularfire2": "^5.0.0-rc.6",
"firebase": "^4.12.1",

npm install