[CI] (362fa9c) tanstack-start/tanstack-start-saas

[wizard-ci-bot]

Automated wizard CI run

Source: manual
Trigger ID: 362fa9c
App: tanstack-start/tanstack-start-saas
App directory: apps/tanstack-start/tanstack-start-saas
Workbench branch: wizard-ci-362fa9c-tanstack-start-tanstack-start-saas
Wizard branch: main
Context Mill branch: main
PostHog (MCP) branch: master
Timestamp: 2026-02-11T17:50:06.908Z
Duration: 402.8s

[wizard-ci-bot]

Good, TypeScript check passed with no errors. Now I have all the information needed to write the evaluation. Let me compile the full report.

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PR Evaluation Report

Summary

This PR adds PostHog analytics integration to a TanStack Start SaaS application (CloudFlow). The integration includes both client-side (@posthog/react) and server-side (posthog-node) SDKs, capturing invoice lifecycle events, user engagement actions, and error tracking via the error boundary component.

Files changed	Lines added	Lines removed
12	+571	-2

Confidence score: 3/5 🤔

• Event tracking in render body: posthog.capture() calls in posts..tsx and users..tsx are placed directly in the component body (not in useEffect), causing duplicate events on every re-render [CRITICAL]
• Error boundary tracking in render body: posthog.captureException() and posthog.capture('error_displayed') are called during render without useEffect, causing duplicate events on re-renders [CRITICAL]
• Server-side events not awaited/flushed: Server API routes call posthog.capture() but never call await posthog.flush(), risking lost events in serverless/short-lived processes [MEDIUM]
• No reverse proxy: Events are sent directly to us.i.posthog.com without a reverse proxy, making them susceptible to ad blockers [MEDIUM]
• No user identification: No posthog.identify() calls to associate events with authenticated users [MEDIUM]

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File changes

Filename	Score	Description
package.json	5/5	Correctly adds @posthog/react ^1.7.1 and posthog-node ^5.24.15 to dependencies
pnpm-lock.yaml	5/5	Lock file properly updated with PostHog dependencies and transitive dependencies
posthog-setup-report.md	4/5	Comprehensive setup documentation, though some events described don't match implementation
src/routes/__root.tsx	4/5	PostHogProvider correctly wraps app with appropriate options (capture_exceptions, defaults)
src/components/DefaultCatchBoundary.tsx	2/5	Captures exceptions and error events but calls are in render body, not useEffect - will fire on every re-render
src/routes/index.tsx	5/5	Event handlers properly capture clicks via onClick callbacks - correct pattern
src/routes/posts..tsx	2/5	invoice_viewed fires on every render (not in useEffect); invoice_paid is correctly in handler
src/routes/users..tsx	2/5	team_member_viewed fires on every render (not in useEffect), causing duplicate events
src/routes/api/invoices.ts	4/5	Server-side invoice_created event captured correctly, but no flush() call
src/routes/api/invoices..ts	4/5	Server-side update/delete events captured correctly, but no flush() call
src/routes/api/invoices..pay.ts	4/5	Server-side payment event captured correctly, but no flush() call
src/utils/posthog-server.ts	4/5	Singleton pattern implemented; uses flushAt: 1, flushInterval: 0 for immediate sends

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App sanity check: 4/5 ✅

Criteria	Result	Description
App builds and runs	Yes	npm run build completes successfully (vite build + tsc --noEmit pass)
Preserves existing env vars & configs	Yes	Original dependencies and scripts preserved; only PostHog deps added
No syntax or type errors	Yes	TypeScript compilation passes with no errors
Correct imports/exports	Yes	All PostHog imports (@posthog/react, posthog-node) are correct
Minimal, focused changes	Yes	Changes are focused on PostHog instrumentation only

Issues

• Chunk size warning: Build produces a warning about 508KB main chunk, but this is pre-existing and not caused by PostHog changes [LOW]

Other completed criteria

• Environment variables documented in .env file
• Build configuration unchanged and valid
• No PII in event properties (user emails captured in team_member_viewed - borderline, but typically acceptable for analytics)
• Consistent code patterns with existing codebase

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PostHog implementation: 3/5 ⚠️

Criteria	Result	Description
PostHog SDKs installed	Yes	@posthog/react ^1.7.1 and posthog-node ^5.24.15 in package.json
PostHog client initialized	Yes	Client-side: PostHogProvider in __root.tsx with api_host, defaults, capture_exceptions. Server-side: singleton pattern in posthog-server.ts
capture()	Yes	Multiple events captured client-side and server-side
identify()	No	No user identification implemented - all events anonymous or use header-passed IDs
Error tracking	Partial	captureException used in DefaultCatchBoundary, but called in render body causing duplicates
Reverse proxy	No	Events sent directly to us.i.posthog.com, no proxy configured

Issues

• Events captured during render: In posts..tsx, users..tsx, and DefaultCatchBoundary.tsx, posthog.capture() calls are placed in the component body outside of useEffect. This means the event fires on every render/re-render, not just once per page view. Fix: Wrap in useEffect with appropriate dependencies. [CRITICAL]
• No user identification: The integration tracks events but never calls posthog.identify() to associate events with logged-in users. Server routes expect X-PostHog-Distinct-Id headers but nothing sends them. [MEDIUM]
• Server events may be lost: Server-side posthog.capture() calls don't await posthog.flush(). While flushAt: 1 is set, in serverless environments the process may terminate before the HTTP request completes. [MEDIUM]
• No reverse proxy for ad-blocker bypass: Direct API host URL will be blocked by common ad blockers, reducing data accuracy [MEDIUM]

Other completed criteria

• API key loaded from environment variable (VITE_PUBLIC_POSTHOG_KEY)
• API host configurable via environment variable
• Proper defaults option ('2025-05-24') for consistent SDK behavior
• Debug mode enabled in development
• Session replay enabled by default through capture_exceptions

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PostHog insights and events: 4/5 ✅

Filename	PostHog events	Description
src/routes/__root.tsx	Automatic pageviews, session replay	Provider enables automatic tracking and exception capture
src/components/DefaultCatchBoundary.tsx	error_displayed, error_retry_clicked, captureException	Tracks errors shown to users and retry attempts - useful for debugging
src/routes/index.tsx	view_invoices_clicked, manage_team_clicked, pending_invoice_clicked	Homepage engagement tracking with source attribution
src/routes/posts..tsx	invoice_viewed, invoice_paid	Invoice funnel events with relevant properties (id, title, amount, status)
src/routes/users..tsx	team_member_viewed	Team engagement tracking with user details and role
src/routes/api/invoices.ts	invoice_created	Server-side creation event with invoice details
src/routes/api/invoices..ts	invoice_updated, invoice_deleted	Server-side lifecycle events with invoice details
src/routes/api/invoices..pay.ts	invoice_payment_completed	Critical conversion event for payment completion

Issues

• Duplicate page view events: Because invoice_viewed and team_member_viewed fire on every render, not just initial mount, funnel analysis will be inaccurate [CRITICAL]
• Missing session linking: Server events include `` from headers, but client doesn't send these headers, so server and client events won't be properly linked [MEDIUM]

Other completed criteria

• Events represent real user actions and business-critical flows (invoice lifecycle)
• Events enriched with relevant properties (invoice_id, amount, status, source)
• Funnel-ready events (view -> paid -> payment_completed)
• Error tracking captures error details for debugging
• Source attribution on engagement events

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Reviewed by wizard workbench PR evaluator