From b7e684d34b1891ca183cd0273efc838f104261fc Mon Sep 17 00:00:00 2001
From: Joe Staley <jstaley@thealbatrosssolutions.com>
Date: Tue, 10 Feb 2026 14:20:49 -0500
Subject: [PATCH 1/2] Add latching to update flavor

---
 src/flavors/update.js            |  3 ++-
 test/unit/flavors/update.test.js | 34 ++++++++++++++++++++++++++++++++
 2 files changed, 36 insertions(+), 1 deletion(-)

diff --git a/src/flavors/update.js b/src/flavors/update.js
index 3464d50..db34fe0 100644
--- a/src/flavors/update.js
+++ b/src/flavors/update.js
@@ -12,12 +12,13 @@ import {
   updateDynamoDB,
 } from '../sinks/dynamodb';
 
-import { filterOnEventType, filterOnContent } from '../filters';
+import { filterOnEventType, filterOnContent, outLatched } from '../filters';
 
 import { normalize } from './correlate';
 
 export const update = (rule) => (s) => s // eslint-disable-line import/prefer-default-export
   // reacting to collected events vs change events
+  .filter(outLatched)
   .map((uow) => (uow.record.eventName === 'INSERT' && uow.record.dynamodb.Keys.sk.S === 'EVENT' ? /* istanbul ignore next */ normalize(uow) : uow))
 
   .filter(onEventType(rule))
diff --git a/test/unit/flavors/update.test.js b/test/unit/flavors/update.test.js
index b88c31b..c7a93bd 100644
--- a/test/unit/flavors/update.test.js
+++ b/test/unit/flavors/update.test.js
@@ -287,6 +287,40 @@ describe('flavors/update.js', () => {
       })
       .done(done);
   });
+
+  it('should skip processing if latched', (done) => {
+    const events = toDynamodbRecords([
+      {
+        timestamp: 1572832690,
+        keys: {
+          pk: '1',
+          sk: 'thing',
+        },
+        newImage: {
+          pk: '1',
+          sk: 'thing',
+          discriminator: 'thing',
+          name: 'Thing One',
+          description: 'This is thing one',
+          otherThing: 'thing|2',
+          latched: true,
+          ttl: 1549053422,
+          timestamp: 1548967022000,
+        },
+      },
+    ]);
+
+    initialize({
+      ...initializeFrom(rules),
+    }, { ...defaultOptions, AES: false })
+      .assemble(fromDynamodb(events), false)
+      .collect()
+      // .tap((collected) => console.log(JSON.stringify(collected, null, 2)))
+      .tap((collected) => {
+        expect(collected.length).to.equal(0);
+      })
+      .done(done);
+  });
 });
 
 const toUpdateRequest = (uow) => ({

From 5f542fcdd0d15e80b952aa2cf26175e7887a3aba Mon Sep 17 00:00:00 2001
From: Joe Staley <jstaley@thealbatrosssolutions.com>
Date: Tue, 10 Feb 2026 14:26:58 -0500
Subject: [PATCH 2/2] Add latching to update flavor

---
 package-lock.json | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/package-lock.json b/package-lock.json
index 44be0c3..d4c80dc 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "aws-lambda-stream",
-  "version": "1.1.19",
+  "version": "1.1.20",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "aws-lambda-stream",
-      "version": "1.1.19",
+      "version": "1.1.20",
       "license": "MIT",
       "dependencies": {
         "object-sizeof": "^2.6.0"