More complex optimized redux connectors.

UsersContainer.js

import { connect } from 'react-redux';
import { removeUser } from '../reducers/user';

import Users from '../components/Users';

const Container = connect(
  (state, props) => ({
    users: state.users.all,
    options: state.options,
    isAdmin: state.currentUser[props.userId].isAdmin === true
  }),
  { removeUser },
  null,
  {
    areStatesEqual: (next, prev) => {
      return (
        prev.users.all === next.users.all &&
        prev.options === next.options &&
        prev.currentUser === next.currentUser
      );
    }
  }
)(Users);

export default Container;