nebula.js/apis/nucleus/src/hooks/useProperties.js

import { useState, useEffect } from 'react';

import { observe, unObserve } from '../object/observer';

export default function useProperties(model) {
  const [properties, setProperties] = useState(null);

  useEffect(() => {
    if (!model) {
      return undefined;
    }
    observe(model, setProperties, 'properties');

    return () => {
      unObserve(model, setProperties, 'properties');
    };
  }, [model && model.id]);

  return [properties];
}