chore: deploy api v2 on vercel by ThyMinimalDev · Pull Request #26735 · calcom/cal.com

ThyMinimalDev · 2026-01-12T09:59:46Z

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I have self-reviewed the code (A decent size PR without self-review might be rejected).
N/A I have updated the developer docs in /docs if this PR makes changes that would require a documentation change. If N/A, write N/A here and check the checkbox.
I confirm automated tests are in place that prove my fix is effective or that my feature works.

Updates since last revision

Replaced console.log with logger.log in the Vercel serverless handler (line 86) to address Cubic AI review feedback about using the logging framework consistently

Summary by cubic

Deploy API v2 on Vercel by adding a serverless handler with a cached Nest app and adjusting boot logic. Local development startup remains unchanged.

New Features
- Added a Vercel serverless handler that initializes Nest once and reuses the Express instance.
- Unified query parsing with qs for both Express and the Vercel handler.
- Disabled shutdown hooks when running on Vercel.
Refactors
- Simplified build script to run only nest build; added build:docker and updated Dockerfile to build platform packages in the correct order.
- Configured Turbo to cache dist/** outputs for @calcom/api-v2.
- Updated Biome config to include bootstrap.ts and main.ts.
- Enabled esModuleInterop and switched cookie-parser to a default import; used Nest logger in the serverless handler and startup code; switched Prisma to PrismaPg adapter in the non-pool path.
- Standardized USE_POOL handling via Dockerfile and Vite define.

^{Written for commit 83914bc. Summary will update on new commits.}

Link to Devin run: https://app.devin.ai/sessions/c1e01c049b2c42f98010428232035889
Requested by: unknown ()

cubic-dev-ai

1 issue found across 5 files

Prompt for AI agents (all issues)


Check if these issues are valid — if so, understand the root cause of each and fix them.


<file name="apps/api/v2/src/main.ts">

<violation number="1" location="apps/api/v2/src/main.ts:86">
P2: Replace console.log with logger.log for consistency with the logging framework</violation>
</file>

_{Reply with feedback, questions, or to request a fix. Tag @cubic-dev-ai to re-run a review.}

apps/api/v2/src/main.ts

github-actions · 2026-01-12T10:04:07Z

Devin AI is addressing Cubic AI's review feedback

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Address Cubic AI review feedback to use the logging framework consistently instead of console.log in the serverless handler. Co-Authored-By: unknown <>

github-actions · 2026-01-12T10:17:56Z

Devin AI is resolving merge conflicts

This PR has merge conflicts with the main branch. The existing Devin session has been notified to resolve them.

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Resolve any conflicts intelligently
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Resolve merge conflict in biome.json by accepting main branch's broader trpc import restrictions for atoms package. Co-Authored-By: unknown <>

…roxy/github.com/calcom/cal.com into deploy-api-v2-vercel

apps/api/v2/src/main.ts

hariombalhara

We need to be sure with comma:true otherwise okay

apps/api/v2/src/bootstrap.ts

github-actions · 2026-01-12T10:59:09Z

E2E results are ready!

Workflow #98578.1 latest results

cubic-dev-ai

1 issue found across 1 file (changes from recent commits).

Prompt for AI agents (all issues)


Check if these issues are valid — if so, understand the root cause of each and fix them.


<file name="apps/api/v2/src/bootstrap.ts">

<violation number="1">
P1: Shutdown hooks are now incorrectly enabled on Vercel. The code change contradicts both the PR description and serverless best practices. According to NestJS documentation, `enableShutdownHooks()` should NOT be called in serverless environments like Vercel/Lambda because shutdown hooks rely on system signals that don't work properly in serverless contexts. This could cause runtime issues, execution timeouts, or improper lifecycle management. Revert to the conditional check or invert the logic to disable shutdown hooks on Vercel.</violation>
</file>

_{Reply with feedback, questions, or to request a fix. Tag @cubic-dev-ai to re-run a review.}

apps/api/v2/src/bootstrap.ts

github-actions · 2026-01-12T11:32:17Z

Devin AI is addressing Cubic AI's review feedback

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Wrap usePool with JSON.stringify() to properly serialize the string value. Without this, Vite injects the raw value as an identifier instead of a string literal, breaking runtime behavior. Addresses Cubic AI review feedback (confidence 9/10) Co-Authored-By: unknown <>

cubic-dev-ai

1 issue found across 1 file (changes from recent commits).

Prompt for AI agents (all issues)


Check if these issues are valid — if so, understand the root cause of each and fix them.


<file name="apps/api/v2/Dockerfile">

<violation number="1" location="apps/api/v2/Dockerfile:22">
P1: Build order violation: platform-libraries is built before its dependencies. The dev:build script in apps/api/v2/package.json shows the correct order: constants → enums → utils → types → libraries → trpc. Move the builds for platform-constants, platform-enums, platform-utils, and platform-types to occur BEFORE the platform-libraries build in the Dockerfile.</violation>
</file>

_{Reply with feedback, questions, or to request a fix. Tag @cubic-dev-ai to re-run a review.}

apps/api/v2/Dockerfile

github-actions · 2026-01-12T18:38:21Z

Devin AI is addressing Cubic AI's review feedback

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Reorder builds to match the dependency graph from dev:build script: constants → enums → utils → types → libraries → trpc → api-v2 platform-libraries depends on the other platform packages, so they must be built first. Addresses Cubic AI review feedback (confidence 9/10) Co-Authored-By: unknown <>

apps/api/v2/Dockerfile

github-actions · 2026-01-13T08:29:54Z

Devin AI is resolving merge conflicts

This PR has merge conflicts with the main branch. The existing Devin session has been notified to resolve them.

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Merge the latest main into this branch
Resolve any conflicts intelligently
Run lint/type checks to ensure validity
Push the resolved changes

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Resolved conflict in turbo.json by keeping both: - PR's API-related environment variables - Main's B2 storage-related environment variables Co-Authored-By: unknown <>

keithwillcode · 2026-01-13T12:57:23Z

Waiting for next release before merging

chore: deploy api v2 on vercel

2a3c956

ThyMinimalDev requested a review from a team as a code owner January 12, 2026 09:59

pull-request-size bot added the size/L label Jan 12, 2026

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fix: replace console.log with logger.log in Vercel handler

d789511

Address Cubic AI review feedback to use the logging framework consistently instead of console.log in the serverless handler. Co-Authored-By: unknown <>

chore: enable esModuleInterop

70f0def

vercel bot deployed to Preview – api-v2 January 12, 2026 10:13 View deployment

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Merge branch 'main' into deploy-api-v2-vercel

554484b

Resolve merge conflict in biome.json by accepting main branch's broader trpc import restrictions for atoms package. Co-Authored-By: unknown <>

Merge branch 'deploy-api-v2-vercel' of https://git-manager.devin.ai/p…

f200110

…roxy/github.com/calcom/cal.com into deploy-api-v2-vercel

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Merge branch 'main' into deploy-api-v2-vercel

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chore: deploy api v2 on vercel

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chore: deploy api v2 on vercel

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devin-ai-integration bot and others added 2 commits January 12, 2026 18:31

fix: docker file builds

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flightcontrol-ops bot had a problem deploying to API v2 - QA January 12, 2026 18:33 Error

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fix: docker file builds

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ThyMinimalDev added the devin-conflict-resolution label Jan 13, 2026

Merge branch 'main' into deploy-api-v2-vercel

865c076

Resolved conflict in turbo.json by keeping both: - PR's API-related environment variables - Main's B2 storage-related environment variables Co-Authored-By: unknown <>

devin-ai-integration bot removed the devin-conflict-resolution label Jan 13, 2026

vercel bot deployed to Preview – api-v2 January 13, 2026 08:37 View deployment

chore: add docker build

e287329

flightcontrol-ops bot deployed to API v2 - QA January 13, 2026 08:38 Active

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chore: upgrade nest/bull

83914bc

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keithwillcode approved these changes Jan 13, 2026

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keithwillcode merged commit 9ad8aa9 into main Jan 13, 2026
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keithwillcode deleted the deploy-api-v2-vercel branch January 13, 2026 14:31

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