firebase’ is not defined no-undef firebase error

cant use firebase in react app, i installed firebase using npm install firebase and created firebase project. and i add that code that given from firebase and exported it like this

export const auth = firebase.auth();
export const googleAuthProvider = new firebase.auth.GoogleAuthProvider();

then i used it in react component like below

import {auth} from '../../firebase';

and it says cant compile like this
image