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PR Evaluation ReportSummaryAdds comprehensive PostHog analytics integration to a Next.js 15 todo app with event tracking for user actions, page views, and error handling
PostHog Integration: 9/10Events Tracked: todo_created, todo_completed, todo_uncompleted, todo_deleted, todo_create_failed, todo_update_failed, todo_delete_failed, todo_fetch_failed, todo_form_submitted, about_page_viewed Issues⚪ LOW: Missing user identification setup - no posthog.identify() calls found (in
Strengths
Runnability: 8/10
Issues
Code Quality: 9/10
Overall Score: 9/10Recommendation: ✅ APPROVE Generated by PR Evaluation Agent |
PR Evaluation ReportSummaryThis PR adds comprehensive PostHog analytics integration to a Next.js 15 App Router todo application. It includes client-side initialization via instrumentation-client.ts, server-side PostHog client setup, reverse proxy configuration to avoid ad-blockers, and event tracking for all core todo CRUD operations plus page views. The implementation also includes a .posthog-events.json manifest documenting all tracked events.
PostHog Integration: 4/5Events Tracked: todo_created, todo_completed, todo_uncompleted, todo_deleted, todo_create_failed, todo_update_failed, todo_delete_failed, todo_fetch_failed, todo_form_submitted, about_page_viewed Issues🟡 MEDIUM: Missing user identification - no posthog.identify() call to link events to users (in
⚪ LOW: No automatic pageview tracking configured - only manual about_page_viewed event (in
⚪ LOW: Server-side PostHog client is created but never used in the PR (in
Strengths
Code Quality: 5/5
Quality of Insights: 5/5
Strengths
Overall Score: 4/5Recommendation: ✅ APPROVE Generated by PR Evaluation Agent |
PR Evaluation ReportSummaryThis PR implements a comprehensive PostHog analytics integration for a Next.js 15 App Router todo application. It includes client-side initialization using the modern instrumentation-client.ts pattern, reverse proxy setup to circumvent ad-blockers, server-side PostHog client setup, and extensive event tracking across core todo CRUD operations (create, complete, delete) with error tracking. The implementation also includes a page view tracker component and documents all events in a .posthog-events.json manifest file.
Important Files Changed
PostHog Integration: 4/5Events Tracked: todo_created, todo_completed, todo_uncompleted, todo_deleted, todo_create_failed, todo_update_failed, todo_delete_failed, todo_fetch_failed, todo_form_submitted, about_page_viewed Issues
Criteria met
Code Quality: 5/5
Quality of Insights: 5/5
Strengths
Overall Score: 5/5Recommendation: ✅ APPROVE Generated by PR Evaluation Agent |
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Now I have all the information I need to provide a thorough evaluation. Here's my review: PR Evaluation ReportSummaryThis PR adds PostHog analytics integration to a Next.js 15 App Router todo application. It implements client-side tracking via
Important Files Changed
PostHog Integration: 2/5Events Tracked: todo_created, todo_completed, todo_uncompleted, todo_deleted, todo_create_failed, todo_update_failed, todo_delete_failed, todo_fetch_failed, todo_form_submitted, about_page_viewed Error Tracking: ✅ Configured via Issues
Criteria Met
Code Quality: 3/5
Issues
Quality of Insights: 4/5
Strengths
Issues
Overall Score: 3/5Recommendation: ❌ REQUEST CHANGES Required Changes Before Merge:
Recommended Improvements:
Generated by PR Evaluation Agent |
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Now I have all the information needed to provide a comprehensive evaluation. Let me create the PR review: PR Evaluation ReportSummaryThis PR adds PostHog analytics integration to a Next.js 15 App Router todo application. It implements client-side event tracking for todo CRUD operations, page views, and error capture, along with a reverse proxy configuration to bypass ad blockers. However, the PostHog SDK dependencies are missing from
Important Files Changed
PostHog Integration: 3/5
Issues
Other completed criteria
Code quality: 3/5
Issues
Quality of insights: 4/5PostHog insights enabled
Issues
Overall score: 3/5Recommendation: ❌ REQUEST CHANGES Required changes:
Recommended improvements:
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This issue has 3216 words at 5 comments. Issues this long are hard to read or contribute to, and tend to take very long to reach a conclusion. Instead, why not:
Is this issue intended to be sprawling? Consider adding label |
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Now I have a complete picture. Let me provide the evaluation: PR Evaluation ReportSummaryThis PR adds PostHog analytics integration to a Next.js 15 App Router todo application. It implements client-side tracking via
Overall confidence score: 2/5 ❌Required changes:
Recommended improvements:
Important Files Changed
PostHog Integration: 2/5
Issues
Other completed criteria#### Other completed criteria
Code quality: 3/5
Issues
Quality of PostHog insights: 4/5
Issues
Sequence diagramsequenceDiagram
participant User
participant Browser
participant NextJS as Next.js App
participant Proxy as /ingest (Reverse Proxy)
participant PostHog as PostHog Cloud
Note over Browser: App loads instrumentation-client.ts
Browser->>Browser: posthog.init() with capture_exceptions: true
User->>Browser: Visit About Page
Browser->>Browser: AboutPageTracker mounts
Browser->>Proxy: capture('about_page_viewed')
Proxy->>PostHog: Forward to us.i.posthog.com
User->>Browser: Submit Todo Form
Browser->>Browser: capture('todo_form_submitted', {has_description, title_length})
Browser->>NextJS: POST /api/todos
NextJS-->>Browser: 200 OK (newTodo)
Browser->>Proxy: capture('todo_created', {todo_id, has_description})
Proxy->>PostHog: Forward event
User->>Browser: Toggle Todo Complete
Browser->>NextJS: PATCH /api/todos/:id
NextJS-->>Browser: 200 OK
Browser->>Proxy: capture('todo_completed', {todo_id})
Proxy->>PostHog: Forward event
User->>Browser: Delete Todo
Browser->>NextJS: DELETE /api/todos/:id
NextJS-->>Browser: 200 OK
Browser->>Proxy: capture('todo_deleted', {todo_id})
Proxy->>PostHog: Forward event
Note over Browser,PostHog: Error Flow
Browser->>NextJS: API Request
NextJS-->>Browser: Error/Exception
Browser->>Proxy: capture('todo_*_failed', {error_message})
Browser->>Proxy: captureException(error)
Proxy->>PostHog: Forward error events
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Now I have all the information needed to provide a comprehensive PR evaluation. Here's the report: PR Evaluation ReportSummaryThis PR adds PostHog analytics integration to a Next.js 15 App Router todo application. It includes client-side tracking via
Confidence score: 2/5 ❌Recommended changes and improvements (in order of most urgent):
Important files changed
App sanity check
Issues
|
| Criteria | Result |
|---|---|
| PostHog SDKs installed | ❌ Not installed - missing from package.json |
| PostHog client initialized | instrumentation-client.ts (Next.js 15 pattern) but has invalid config option |
| capture(): | ✅ Configured - 10 events tracked across components |
| identify(): | ❌ Not configured - No user identification implemented |
| Error tracking: | ✅ Configured - capture_exceptions: true and posthog.captureException() calls |
| Reverse proxy: | ✅ Configured - Correct rewrites in next.config.ts for /ingest/* |
Issues
- [CRITICAL] Missing dependencies: The integration imports
posthog-jsandposthog-nodebut neither is added topackage.json. The app cannot build. - [CRITICAL] Invalid init config: The
defaults: '2025-05-24'option is not a valid PostHog configuration parameter. - [MEDIUM] No user identification: Without
posthog.identify(), all events are attributed to anonymous users, limiting cohort analysis and user journey tracking. - [MEDIUM] Dead server code:
lib/posthog-server.tsexportsgetPostHogClient()andshutdownPostHog()but they're never called.
Other completed criteria
- Reverse proxy correctly routes
/ingest/*tous.i.posthog.com - Static assets proxy configured for
/ingest/static/* skipTrailingSlashRedirect: trueadded for PostHog compatibilityui_hostcorrectly set tohttps://us.posthog.com- Debug mode enabled for development environment
- Exception capture enabled globally
Quality of PostHog insights: 4/5
| Filename | Captured events | Description |
|---|---|---|
todo-list.tsx |
todo_created, todo_completed, todo_uncompleted, todo_deleted, todo_fetch_failed, todo_create_failed, todo_update_failed, todo_delete_failed + captureException |
Comprehensive CRUD tracking with success/failure states; enables funnel analysis for todo completion rates |
todo-form.tsx |
todo_form_submitted |
Form submission with has_description, title_length, description_length properties for input analysis |
about-page-tracker.tsx |
about_page_viewed |
Page view tracking with deduplication; useful for awareness funnel |
Issues
- [LOW] Redundant event tracking:
todo_form_submittedandtodo_createdboth fire on successful todo creation. Consider tracking only one or differentiating their purposes (intent vs. success). - [LOW] Missing page view for main page: Only the About page has explicit tracking. The main todo list page has no
$pageviewequivalent.
Other completed criteria
- Events capture meaningful user actions (create, complete, delete todos)
- Error events include
error_messageproperty for debugging todo_idincluded for correlation across events- Boolean properties (
has_description) enable segmentation - Numeric properties (
title_length) enable distribution analysis - Separate events for
todo_completedvstodo_uncompletedenable completion rate analysis .posthog-events.jsondocuments all events with descriptions for team reference
Reviewed by wizard workbench PR evaluator
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Now I have all the information needed to provide a comprehensive evaluation. Here is my PR review: PR Evaluation ReportSummaryThis PR adds PostHog analytics integration to a Next.js 15 App Router todo application. It implements client-side tracking via
Confidence score: 2/5 ❌Top recommended changes:
Important files changed
App sanity check
Issues
|
| Criteria | Result |
|---|---|
| PostHog SDKs installed | No - posthog-js and posthog-node not in package.json |
| PostHog client initialized | Partial - instrumentation-client.ts has init code but uses invalid defaults option |
| capture() | Yes - Multiple capture calls for todo CRUD and page views |
| identify() | No - No user identification implemented |
| Error tracking | Yes - capture_exceptions: true and posthog.captureException() calls |
| Reverse proxy | Yes - Correctly configured in next.config.ts with /ingest rewrites |
Issues
- Missing SDK installation: Add to package.json:
"posthog-js": "^1.x.x"and"posthog-node": "^4.x.x". [CRITICAL] - No user identification: Add
posthog.identify(userId)when user context is available to link events to users. [MEDIUM] - Invalid defaults option: Remove
defaults: '2025-05-24'from init config or replace with valid options likepersistence: 'localStorage'. [MEDIUM] - Server client unused: Either implement server-side tracking or remove
lib/posthog-server.tsto avoid dead code. [LOW]
Other completed criteria
- API host points to reverse proxy (
/ingest) - UI host correctly set to
https://us.posthog.com - Debug mode enabled in development
- Exception capture enabled
- Environment variables documented in
.env - Proper error message extraction in catch blocks
Quality of PostHog insights: 4/5
| Filename | Captured events | Description |
|---|---|---|
todo-list.tsx |
todo_created, todo_completed, todo_uncompleted, todo_deleted, todo_fetch_failed, todo_create_failed, todo_update_failed, todo_delete_failed + captureException |
Comprehensive CRUD tracking with success/failure states, enables funnel analysis and error monitoring |
todo-form.tsx |
todo_form_submitted |
Tracks form submissions with useful properties (has_description, title_length) |
about-page-tracker.tsx |
about_page_viewed |
Page view tracking with deduplication via ref |
Issues
- Missing automatic pageview tracking: Consider enabling
capture_pageview: trueor implementing pageviews for all routes, not just the about page. [MEDIUM] - No session recording setup: Consider adding
enable_recording_console_logor session replay for debugging. [LOW]
Other completed criteria
- Events follow consistent snake_case naming convention
- Events are enriched with contextual properties (todo_id, error_message, has_description, title_length)
- Error events paired with
captureExceptionfor full error context - Events map to real user actions (create, complete, delete)
- Events enable funnel analysis (form_submitted → created vs created_failed)
- Event documentation in
.posthog-events.jsonprovides good discoverability
Reviewed by wizard workbench PR evaluator
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Now I have all the information needed to evaluate this PR. Let me compile the review: PR Evaluation ReportSummaryThis PR adds PostHog analytics integration to a Next.js 15 App Router todo application. It includes client-side initialization via
Confidence score: 2/5 ❌Top recommended changes:
Important files changed
App sanity check score: 2/5
Issues
|
| Criteria | Result | Description |
|---|---|---|
| PostHog SDKs installed | No | Neither posthog-js nor posthog-node are in package.json |
| PostHog client initialized | Partial | instrumentation-client.ts initializes client correctly but uses undocumented defaults: '2025-05-24' option |
| capture() | Yes | Multiple events captured: todo_created, todo_completed, todo_deleted, etc. |
| identify() | No | No posthog.identify() calls for user identification |
| Error tracking | Yes | captureException() used in all error handlers with capture_exceptions: true in init |
| Reverse proxy | Yes | Proper /ingest rewrites in next.config.ts with skipTrailingSlashRedirect |
Issues
- Missing
posthog-jsdependency: The package is not installed. Runnpm install posthog-js. [CRITICAL] - Missing
posthog-nodedependency: The package is not installed. Runnpm install posthog-node. [CRITICAL] - No
posthog.identify()implementation: User identification is missing, which limits the ability to track user journeys and build cohorts. Addposthog.identify(userId)when users are authenticated. [MEDIUM] - Undocumented
defaultsoption:instrumentation-client.tsusesdefaults: '2025-05-24'which is not a documented PostHog option. This may cause unexpected behavior or be ignored. [MEDIUM] - Server client inconsistent host config:
lib/posthog-server.tsusesprocess.env.NEXT_PUBLIC_POSTHOG_HOSTdirectly while client uses/ingestproxy. Server should use the direct PostHog host. [LOW]
Other completed criteria
- Correct API host configuration via reverse proxy
capture_exceptions: trueenabled for automatic error tracking- Debug mode enabled in development
ui_hostcorrectly set for US region- Proper deduplication in
AboutPageTrackerusinguseRef - No PII in event properties
PostHog insights score: 4/5
| Filename | PostHog events | Description |
|---|---|---|
todo-list.tsx |
todo_created, todo_completed, todo_uncompleted, todo_deleted, todo_fetch_failed, todo_create_failed, todo_update_failed, todo_delete_failed |
Comprehensive CRUD tracking with error states. Enables funnel analysis for todo lifecycle and error rate monitoring. |
todo-form.tsx |
todo_form_submitted |
Form submission with has_description, title_length, description_length properties. Enables analysis of user input patterns. |
about-page-tracker.tsx |
about_page_viewed |
Page view tracking for awareness funnel analysis. |
Issues
- Duplicate form submission tracking: Both
todo_form_submittedandtodo_createdfire on successful todo creation. Consider removingtodo_form_submittedor making it capture intent regardless of success. [LOW] - Missing automatic pageview tracking: No
capture_pageviewoption set in init. Relies on customabout_page_viewedevent only. Consider enabling automatic pageviews or adding manual tracking to all pages. [MEDIUM] - No session replay or feature flag setup: Could enhance analytics with session replay for debugging user flows. [LOW]
Other completed criteria
- Events enriched with relevant properties (
todo_id,has_description,title_length, etc.) - Error events include
error_messagefor debugging - Events represent real user actions (create, complete, delete)
- Success/failure states tracked separately
.posthog-events.jsonprovides good documentation for all events
Reviewed by wizard workbench PR evaluator
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Now I have all the information needed to evaluate this PR. Let me compile my review: PR Evaluation ReportSummaryThis PR adds PostHog analytics integration to a Next.js 15 App Router todo application. It implements client-side tracking via
Confidence score: 2/5 ❌
Files changed
App sanity check score: 2/5 ❌
Issues
|
| Criteria | Result | Description |
|---|---|---|
| PostHog SDKs installed | No | Neither posthog-js nor posthog-node appear in package.json dependencies |
| PostHog client initialized | Yes | Client initialized in instrumentation-client.ts using Next.js 15 instrumentation pattern with api_host pointing to reverse proxy |
| capture() | Yes | Events captured for all CRUD operations, form submission, page view, and errors |
| Identify() | No | No user identification implemented anywhere |
| Error tracking | Yes | Uses posthog.captureException(error) in all catch blocks plus capture_exceptions: true in init |
| Reverse proxy | Yes | Properly configured via Next.js rewrites to /ingest/* → us.i.posthog.com with static asset handling |
Issues
- Missing NPM dependencies:
posthog-jsandposthog-nodemust be added to package.json for the integration to work. [CRITICAL] - No user identification:
posthog.identify()is not called anywhere. User sessions won't be linked across devices or to user accounts. Add identification after authentication. [MEDIUM] - Suspicious
defaultsconfig option:defaults: '2025-05-24'in init is not a standard PostHog config option. May be ignored or cause issues. [LOW] - Server client configured but unused:
lib/posthog-server.tscreates a PostHog Node client but it's never used for server-side tracking. [LOW]
Other completed criteria
- Uses correct US region endpoints (us.i.posthog.com, us-assets.i.posthog.com)
- Debug mode enabled only in development
- Proper
skipTrailingSlashRedirectfor PostHog API compatibility - Uses environment variables for API key configuration
- No PII in event properties (only has todo_id, lengths, error messages)
PostHog insights score: 4/5 ✅
| Filename | PostHog events | Description |
|---|---|---|
todo-list.tsx |
todo_created, todo_completed, todo_uncompleted, todo_deleted |
Core product engagement metrics for todo lifecycle - enables funnel analysis and completion rates |
todo-list.tsx |
todo_fetch_failed, todo_create_failed, todo_update_failed, todo_delete_failed |
Error tracking events with error messages - enables reliability monitoring and debugging |
todo-list.tsx |
captureException |
Exception capture for all CRUD failures - provides stack traces for debugging |
todo-form.tsx |
todo_form_submitted |
Form submission with has_description, title_length, description_length - enables analysis of user input patterns |
about-page-tracker.tsx |
about_page_viewed |
Page view tracking - enables awareness funnel analysis |
Issues
- No automatic pageview tracking: Only
about_page_viewedis manually tracked. Consider enablingcapture_pageview: trueor implementing a pageview capture in the layout for comprehensive navigation analytics. [MEDIUM] - Limited property enrichment on success events:
todo_completedandtodo_deletedonly capturetodo_id. Could include more context like time_since_creation for completion analysis. [LOW]
Other completed criteria
- Events capture real user actions (create, complete, delete todos)
- Error events include error messages for debugging
- Success events include relevant properties (todo_id, has_description, title_length)
- Events documented in
.posthog-events.jsonfor reference - Events enable key product questions: "What % of todos get completed?", "How often do users add descriptions?", "What errors are users encountering?"
Reviewed by wizard workbench PR evaluator
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Now I have all the information needed to write the PR evaluation. Let me produce the comprehensive review: PR Evaluation ReportSummaryThis PR adds PostHog analytics integration to a Next.js 15 App Router todo application. It implements client-side initialization via
Confidence score: 3/5 🤔
File changes
App sanity check: 2/5 ❌
Issues
|
| Criteria | Result | Description |
|---|---|---|
| PostHog SDKs installed | No | Packages imported but not in package.json dependencies |
| PostHog client initialized | Yes | Uses instrumentation-client.ts with posthog.init(), api_host pointing to reverse proxy |
| capture() | Yes | 10 events tracked across todo CRUD and page views |
| identify() | No | No user identification implemented |
| Error tracking | Yes | Uses posthog.captureException() for caught errors plus capture_exceptions: true in config |
| Reverse proxy | Yes | Properly configured in next.config.ts with /ingest route to us.i.posthog.com |
Issues
- Missing SDK packages in dependencies: Without adding
posthog-jsandposthog-nodetopackage.json, the app will fail to build. [CRITICAL] - No posthog.identify() calls: User sessions are anonymous. Add identification when user context is available (e.g., after authentication or using distinct_id). [MEDIUM]
- Nonstandard
defaultsoption:defaults: '2025-05-24'is not a valid PostHog init option. This may be ignored or cause unexpected behavior. Consider removing or using valid options likepersistence. [MEDIUM] - No automatic pageview capture: Missing
capture_pageview: truein init options. Currently only the About page tracks views explicitly. [LOW]
Other completed criteria
- Correct API host configuration using reverse proxy (
/ingest) - UI host configured separately (
ui_host: 'https://us.posthog.com') - Debug mode enabled in development
- Exception auto-capture enabled
skipTrailingSlashRedirect: trueset for PostHog API compatibility- Proper cleanup pattern using
useRefto prevent duplicate event firing
PostHog insights and events: 4/5 ✅
| Filename | PostHog events | Description |
|---|---|---|
todo-list.tsx |
todo_created, todo_completed, todo_uncompleted, todo_deleted, todo_fetch_failed, todo_create_failed, todo_update_failed, todo_delete_failed |
Full CRUD lifecycle with success/failure tracking. Includes todo_id, error_message, and contextual properties. Enables funnel analysis (create → complete → delete) and error rate monitoring. |
todo-form.tsx |
todo_form_submitted |
Captures form submission intent with has_description, title_length, description_length. Useful for understanding user input patterns. |
about-page-tracker.tsx |
about_page_viewed |
Tracks About page engagement. Useful for awareness funnel. |
Issues
- Duplicate event for todo creation: Both
todo_form_submitted(in form) andtodo_created(in list) fire when creating a todo. This is intentional (form submission vs. API success) but may cause confusion in analysis. [LOW] - No session/user context: Events lack user identifiers, making cohort analysis and user journey tracking impossible. [MEDIUM]
Other completed criteria
- Events represent real user actions (create, complete, delete todos)
- Error events capture actionable context (error_message, todo_id)
- Properties are non-PII safe (lengths, booleans, IDs)
- Event naming follows snake_case convention consistently
- Success and failure states tracked separately for operational insights
- Events enable building insights: completion rate, error rate, user engagement
Reviewed by wizard workbench PR evaluator
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Now I have all the information needed to evaluate this PR. Let me compile the evaluation report. PR Evaluation ReportSummaryThis PR adds PostHog analytics integration to a Next.js 15 todo application. It implements client-side initialization via
Confidence score: 2/5 ❌
File changes
App sanity check: 2/5 ❌
Issues
|
| Criteria | Result | Description |
|---|---|---|
| PostHog SDKs installed | No | posthog-js and posthog-node are imported but not in package.json dependencies |
| PostHog client initialized | Yes | Client initialized in instrumentation-client.ts using Next.js 15 instrumentation pattern with /ingest proxy host |
| capture() | Yes | Multiple posthog.capture() calls for user actions (form submit, CRUD operations) |
| identify() | No | No user identification implemented |
| Error tracking | Yes | posthog.captureException(error) called on all catch blocks, capture_exceptions: true in init config |
| Reverse proxy | Yes | Correct rewrites in next.config.ts for /ingest to us.i.posthog.com and static assets |
Issues
- PostHog packages not installed: Dependencies are imported but not added to package.json. App will crash on import. [CRITICAL]
- No user identification:
posthog.identify()is never called. User analytics will be anonymous only. [MEDIUM] - Server-side client unused:
posthog-nodeclient configured but never utilized for server-side event tracking. [MEDIUM]
Other completed criteria
- Uses
instrumentation-client.tswhich is the correct Next.js 15 pattern ui_hostcorrectly set tohttps://us.posthog.com- Debug mode enabled in development
- Reverse proxy includes both API and static asset paths
skipTrailingSlashRedirect: truecorrectly set for PostHog compatibility- Exception capture enabled via
capture_exceptions: true - Uses
useRefguard in AboutPageTracker to prevent React Strict Mode double-fire
PostHog insights and events: 4/5 ✅
| Filename | PostHog events | Description |
|---|---|---|
todo-form.tsx |
todo_form_submitted |
Captures form submission with properties: has_description, title_length, description_length. Useful for understanding input behavior |
todo-list.tsx |
todo_created, todo_completed, todo_uncompleted, todo_deleted |
Full CRUD lifecycle tracking with todo_id property. Enables funnel analysis |
todo-list.tsx |
todo_fetch_failed, todo_create_failed, todo_update_failed, todo_delete_failed |
Error events with error_message property plus captureException for stack traces. Good error monitoring |
about-page-tracker.tsx |
about_page_viewed |
Page view tracking for navigation analytics |
Issues
- No page view on main page: The home/todo list page doesn't track page views, only the About page does. [LOW]
- Missing funnel completion context: Events like
todo_completeddon't include time-based properties (e.g., time since creation) that would enable richer funnel analysis. [LOW]
Other completed criteria
- Events represent real user actions (create, complete, delete todos)
- Error events capture failure context with error messages
- Event properties are relevant and non-PII (lengths, booleans, IDs)
- Events documented in
.posthog-events.jsonfor team reference - Both success and failure paths are tracked
captureExceptionused for full error stack traces
Reviewed by wizard workbench PR evaluator
No description provided.