Error shows 'cannot find module firebase-functions' when deploying a firebase project

When I am trying to deploy a firebase project it shows an error message 'cannot find module firebase-functions' in npm console.The steps(node commands) I have done are listing below, 1)npm install -g firebase-tools 2)firebase login 3)firebase init and finally where I stucked is
4)firebase deploy Please help me.

via Pradeep.T