Delete Firebase Auth User

delete_firebase_auth_users.js

let admin = require('firebase-admin')

let serviceAccount = require('../.google-service-keys.default.json')

admin.initializeApp({
  credential: admin.credential.cert(serviceAccount),
  databaseURL: `https://${serviceAccount.project_id}.firebaseio.com`,
})

function deleteUser(uid) {
  admin
    .auth()
    .deleteUser(uid)
    // eslint-disable-next-line promise/always-return
    .then(function() {
      console.log('Successfully deleted user', uid)
    })
    .catch(function(error) {
      console.log('Error deleting user:', error)
    })
}

function getAllUsers(nextPageToken) {
  admin
    .auth()
    .listUsers(100, nextPageToken)
    .then(function(listUsersResult) {
      listUsersResult.users.forEach(function(userRecord) {
        let uid = userRecord.toJSON().uid
        deleteUser(uid)
      })
      // eslint-disable-next-line promise/always-return
      if (listUsersResult.pageToken) {
        getAllUsers(listUsersResult.pageToken)
      }
    })
    .catch(function(error) {
      console.log('Error listing users:', error)
    })
}

getAllUsers()