react-native-facebook-login: undefined is not an object (evaluating 'FBLoginManagerl.loginWithPermissions')

i am facing the error " undefined is not an object" when i am using the below example:

import React, { PropTypes, Component } from ‘react’; var {FBLogin, FBLoginManager} = require(‘react-native-facebook-login’);

class Login extends Component { render() { return ( <FBLogin /> ); } };