Fix async livechat thread normalization - #42089
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Walkthrough
ChangesLivechat message normalization
Priority: ➖ Normal Estimated code review effort: 2 (Simple) | ~10 minutes Change: Bug fix · Severity of issue fixed: Medium Suggested labels: Suggested reviewers: Merge Risk: ⚪ Minimal · up to The normalization change and its targeted test coverage do not show a remaining merge-blocking risk. 🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
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Inline comments:
In `@packages/livechat/src/lib/threads.ts`:
- Line 80: Update the message normalization flow around normalizeMessage and
normalizeThreadMessage to resolve thread parents from the batch-local
parentMessages collection populated by addParentMessage, in addition to the
existing store state lookup. Ensure replies whose parent appears earlier in the
same input normalize without destructuring an undefined parent, and add a
regression test using empty mockState.messages with a parent and reply in one
call that asserts Livechat.message is not called.
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packages/livechat/jest.config.tspackages/livechat/package.jsonpackages/livechat/src/lib/threads.spec.tspackages/livechat/src/lib/threads.ts
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1 issue found across 4 files
Prompt for AI agents (unresolved issues)
Check if these issues are valid — if so, understand the root cause of each and fix them. If appropriate, use sub-agents to investigate and fix each issue separately.
<file name="packages/livechat/jest.config.ts">
<violation number="1" location="packages/livechat/jest.config.ts:1">
P2: The new jest.config.ts enables running tests via `yarn testunit` (which is `jest`) in the livechat package, but `jest` is not declared in packages/livechat/package.json devDependencies. Every other package with a jest.config.ts declares `jest: ~30.2.0`; without it, the test command only works by accident of hoisting from another workspace package and fails on fresh/isolated installs. Add `jest` to the livechat devDependencies.</violation>
</file>
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Re-trigger cubic
| @@ -0,0 +1,6 @@ | |||
| import server from '@rocket.chat/jest-presets/server'; | |||
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P2: The new jest.config.ts enables running tests via yarn testunit (which is jest) in the livechat package, but jest is not declared in packages/livechat/package.json devDependencies. Every other package with a jest.config.ts declares jest: ~30.2.0; without it, the test command only works by accident of hoisting from another workspace package and fails on fresh/isolated installs. Add jest to the livechat devDependencies.
Prompt for AI agents
Check if this issue is valid — if so, understand the root cause and fix it. At packages/livechat/jest.config.ts, line 1:
<comment>The new jest.config.ts enables running tests via `yarn testunit` (which is `jest`) in the livechat package, but `jest` is not declared in packages/livechat/package.json devDependencies. Every other package with a jest.config.ts declares `jest: ~30.2.0`; without it, the test command only works by accident of hoisting from another workspace package and fails on fresh/isolated installs. Add `jest` to the livechat devDependencies.</comment>
<file context>
@@ -0,0 +1,6 @@
+import server from '@rocket.chat/jest-presets/server';
+import type { Config } from 'jest';
+
</file context>
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Addressed in 245d548: jest: ~30.2.0 added to packages/livechat/package.json devDependencies (matching the other workspace packages) and the lockfile updated.
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…nd declare jest dependency
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1 issue found across 4 files (changes from recent commits).
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<file name="packages/livechat/src/lib/threads.ts">
<violation number="1" location="packages/livechat/src/lib/threads.ts:82">
P3: The sequential loop fixes the batch-local-parent ordering bug, but it also serializes the `Livechat.message` network fallback for every reply whose parent isn't already cached. Since `normalizeMessages` runs on full history pages, a page of replies with missing parents now issues one network round-trip at a time. Consider a two-pass approach: register all thread parents first (via `isThreadMessage`/`addParentMessage`), then normalize replies in parallel. That keeps the correctness fix, restores concurrency, and also handles the case where a parent appears after its reply in the batch.</violation>
</file>
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Re-trigger cubic
| export const normalizeMessages = async (messages: any[] = []): Promise<any[]> => { | ||
| // Sequential on purpose: a thread reply whose parent appears earlier in the | ||
| // batch must see it registered in parentMessages before it normalizes. | ||
| const normalized: any[] = []; |
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P3: The sequential loop fixes the batch-local-parent ordering bug, but it also serializes the Livechat.message network fallback for every reply whose parent isn't already cached. Since normalizeMessages runs on full history pages, a page of replies with missing parents now issues one network round-trip at a time. Consider a two-pass approach: register all thread parents first (via isThreadMessage/addParentMessage), then normalize replies in parallel. That keeps the correctness fix, restores concurrency, and also handles the case where a parent appears after its reply in the batch.
Prompt for AI agents
Check if this issue is valid — if so, understand the root cause and fix it. At packages/livechat/src/lib/threads.ts, line 82:
<comment>The sequential loop fixes the batch-local-parent ordering bug, but it also serializes the `Livechat.message` network fallback for every reply whose parent isn't already cached. Since `normalizeMessages` runs on full history pages, a page of replies with missing parents now issues one network round-trip at a time. Consider a two-pass approach: register all thread parents first (via `isThreadMessage`/`addParentMessage`), then normalize replies in parallel. That keeps the correctness fix, restores concurrency, and also handles the case where a parent appears after its reply in the batch.</comment>
<file context>
@@ -77,6 +77,14 @@ export const normalizeMessage = async (message: any) => {
- return normalized.filter((message) => message != null);
+ // Sequential on purpose: a thread reply whose parent appears earlier in the
+ // batch must see it registered in parentMessages before it normalizes.
+ const normalized: any[] = [];
+ for (const message of messages) {
+ const result = await normalizeMessage(message);
</file context>
2 participants
Fixes #42002
The async normalization callback was passed directly to Array.filter, so every Promise was treated as truthy and parent messages were not removed. Normalize first, then filter the resolved results.
Tests: targeted Jest test in Docker, 3 passed.
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Bug Fixes
Tests
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