UpgradePilot
.NET + React/Next.js upgrades
Upgrade a .NET backend and a React or Next.js frontend together
Quick answer. For repositories that mix a .NET backend with a React or Next.js frontend, UpgradePilot upgrades and validates the backend first, then runs the frontend through the same real pipeline. If it cannot confidently identify the frontend, that half is flagged for manual review instead of guessed at.
The problem
Full-stack products are upgraded in pieces, so the backend and frontend drift apart and API contracts break.
Two toolchains (dotnet and npm) mean two sets of failure modes in one change.
What UpgradePilot does for .NET + React/Next.js
- Detects mixed stacks and the frontend framework, including Next.js router type.
- Upgrades and validates the .NET backend first.
- Then upgrades the frontend with verified installs, official codemods, build and tests.
- Flags a frontend it cannot identify confidently for manual review.
- Delivers one pull request with a single report.
What you still review by hand
UpgradePilot is built so nothing is hidden: these are the places a person should look before merging.
- API contract changes between backend and frontend (generated clients, DTOs).
- CI pipelines that build both halves.
- Authentication and CORS configuration shared by both.
- Any half flagged for manual review.
Common pitfalls
- Regenerate API clients after the backend upgrade and before judging frontend failures.
- Keep backend and frontend upgrades in the same pull request so they can be rolled back together.
Documentation to review
Read the official notes for the versions you’re crossing alongside the pull request UpgradePilot produces.
Official documentation.NET breaking changesBackend side.Official documentationReact upgrade guideFrontend side (React).Official documentationNext.js upgrading guideFrontend side (Next.js).UpgradePilotOpen-core boundaryWhat is open source and what is Cloud-only.UpgradePilotAgent architectureAll agents and their contracts.
.NET + React/Next.js upgrade FAQ
Which half is upgraded first?
The .NET backend, so frontend validation runs against an upgraded API.
What if my frontend isn’t React or Next.js?
It is flagged for manual review rather than guessed at. Contact us if you need another framework.
Do I get one pull request or two?
One, with a combined report.