shop/services/firebase/firebase.ts

import firebase from 'firebase-admin'
import config from './config.json'

export const firebaseApp =
    firebase.apps?.[0] ||
    firebase.initializeApp({
        credential: firebase.credential.cert(config),
    })

export const getUserByEmail = async (email: string) => {
    const user = await firebaseApp.auth().getUserByEmail(email)
    return user
}