perf: on multiple changes, batch reprocessing at the end

Author: puppybits

src/reducers/cacheReducer.js

@@ -655,7 +655,9 @@ const modify = (state, { action, key, path }) =>
     }
 
     // reprocessing unifies any order changes from firestore
-    reprocessQuerires(draft, path);
+    if (action.meta.reprocess !== false) {
+      reprocessQuerires(draft, path);
+    }
 
     done();
     return draft;

src/utils/query.js

@@ -803,8 +803,9 @@ export function dispatchListenerResponse({
   if (docChanges && docChanges.length < docData.size) {
     // Loop to dispatch for each change if there are multiple
     // TODO: Option for dispatching multiple changes in single action
-    docChanges.forEach((change) => {
-      dispatch(docChangeEvent(change, meta));
+    docChanges.forEach((change, index) => {
+      const lastChange = index === docChanges.length - 1;
+      dispatch(docChangeEvent(change, { reprocess: lastChange, ...meta }));
     });
   } else {
     // Dispatch action for whole collection change