message: Fixed object matcher
diff: @@ -79,7 +79,7 @@ const getObjectSubset = (object: Object, subset: Object) => {
  ) {
  const trimmed = {};
  Object.keys(subset)
  - .filter(key => object.hasOwnProperty(key))
  + .filter(key => hasOwnProperty(object, key))
  .forEach(
  key => (trimmed[key] = getObjectSubset(object[key], subset[key])),
  );
  