[CI] (a283762) next-js/15-pages-router-saas #198
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Now I have read all the changed files. Let me compile the PR evaluation report based on my analysis. PR Evaluation ReportSummaryThis PR integrates PostHog analytics into a Next.js 15 Pages Router SaaS application. It adds both client-side (
Confidence score: 4/5 👍
File changes
App sanity check: 4/5 ✅
Issues
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| Criteria | Result | Description |
|---|---|---|
| PostHog SDKs installed | Yes | Both posthog-js@^1.324.1 and posthog-node@^5.21.0 added to dependencies |
| PostHog client initialized | Yes | Client via instrumentation-client.ts, server via singleton in lib/posthog-server.ts |
| capture() | Yes | Extensive capture calls across 11 files tracking key user actions |
| identify() | Partial | Server-side uses user ID consistently; client-side uses email in login.tsx causing identity fragmentation |
| Error tracking | Yes | capture_exceptions: true enabled client-side; manual captureException calls on errors; server-side error events tracked |
| Reverse proxy | Yes | /ingest rewrites configured in next.config.ts to bypass ad blockers |
Issues
- Identity mismatch between client and server: Client-side
posthog.identify()inlogin.tsxusesdata.emailas the distinct ID, while server-side usesuser.id.toString(). This will create duplicate user profiles in PostHog and break user journey analysis. Should use user ID consistently. [MEDIUM] - Missing flush() calls in API routes: Server-side
posthog.capture()calls don't awaitposthog.flush()before the response returns. In serverless environments, the function may terminate before events are sent to PostHog, causing data loss. [MEDIUM] - Webhook uses Stripe customer ID: In
webhook.ts, the distinct ID issubscription.customer as string(Stripe customer ID) which may not match the PostHog user profile. Consider using: falseor mapping to internal user ID. [LOW]
Other completed criteria
- Correct API host configuration (
/ingestfor client, env var for server) - Uses
defaults: '2025-05-24'for recommended defaults - Debug mode enabled in development
skipTrailingSlashRedirect: trueproperly configured- No PII in event properties (only necessary identifiers)
- Proper server-side singleton pattern with shutdown export
PostHog insights and events: 4/5 ✅
| Filename | PostHog events | Description |
|---|---|---|
components/login.tsx |
sign_in_form_submitted, sign_up_form_submitted, sign_in_failed, sign_up_failed, captureException |
Tracks auth form submissions, failures, and exceptions; enables conversion analysis |
pages/api/auth/sign-in.ts |
user_signed_in, sign_in_error |
Server-side sign-in success with user properties; error tracking |
pages/api/auth/sign-up.ts |
user_signed_up, sign_up_error |
New user registration with team and invite context |
pages/api/stripe/checkout.ts |
checkout_completed, checkout_completion_error |
Checkout completion with subscription and plan details |
pages/api/stripe/create-checkout.ts |
checkout_started, checkout_error |
Checkout initiation with price and team context |
pages/api/stripe/webhook.ts |
subscription_updated, subscription_cancelled |
Subscription lifecycle events for churn analysis |
pages/api/team/invite.ts |
team_member_invited, team_invite_error |
Team growth tracking with role information |
pages/api/team/remove-member.ts |
team_member_removed, team_remove_error |
Team churn tracking |
pages/api/account/update.ts |
account_updated, account_update_error |
Profile updates with user identification |
pages/pricing.tsx |
pricing_plan_selected, captureException |
Plan selection with pricing details for funnel analysis |
Issues
- No pageview tracking explicitly configured: While
posthog-jsmay auto-capture pageviews, explicit configuration would be more reliable for Pages Router. [LOW] - Error events use 'anonymous' distinct ID: All error events in catch blocks use
distinctId: 'anonymous'. While understandable when user context is unavailable, these won't associate with user profiles. Consider using the request session if available. [LOW]
Other completed criteria
- Events capture real user actions (sign-up, sign-in, checkout, team management)
- Events enable key product funnels (signup → pricing → checkout → completion)
- Events enriched with relevant properties (teamId, planName, priceId, role)
- Both success and failure states tracked
- Subscription lifecycle captured for churn analysis
- Setup report includes recommended dashboard insights
Reviewed by wizard workbench PR evaluator
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Automated wizard CI run
Source: manual
Trigger ID:
a283762App:
next-js/15-pages-router-saasApp directory:
apps/next-js/15-pages-router-saasWorkbench branch:
wizard-ci-a283762-next-js-15-pages-router-saasWizard branch:
mainExamples branch:
mainPostHog (MCP) branch:
masterTimestamp: 2026-01-15T22:38:20.209Z
Duration: 382.5s