Re-wrote parenting, should be significantly faster, more maintainable

app/imports/api/parenting/fetchDocByRef.js

@@ -0,0 +1,12 @@
+import getCollectionByName from '/imports/api/parenting/getCollectionByName.js';
+
+const docNotFoundError = function({id, collection}){
+  throw new Meteor.Error('document-not-found',
+    `No document could be found with id: ${id} in ${collection}`
+  );
+};
+
+export default function fetchDocByRef({id, collection}, options){
+  return getCollectionByName(collection).findOne(id, options) ||
+    docNotFoundError({id, collection});
+};