reduceDescriptors = (obj, reducer) => {
  const descriptors = Object.getOwnPropertyDescriptors(obj);
  const reducedDescriptors = {};

  forEach(descriptors, (descriptor, name) => {
    let ret;
    if ((ret = reducer(descriptor, name, obj)) !== false) {
      reducedDescriptors[name] = ret || descriptor;
    }
  });

  Object.defineProperties(obj, reducedDescriptors);
}
Determine if a value is a RegExp object

@param {*} val The value to test

@returns {boolean} True if value is a RegExp object, otherwise false