Topic
Definition
A framework upgrade changes runtime and build dependencies and must be validated against migration guidance, project code, and production behavior.
In simpler words
Upgrade in small supported steps, read what changed, then let type checks and production builds prove the app still works.
Next upgrades can affect rendering, routing, caching, and dependencies, so they need a focused and evidence-based change.
Read the official guide for the target version before editing dependencies. It identifies required codemods, renamed APIs, runtime changes, and peer dependency requirements that a version bump alone cannot explain.
Keep the upgrade focused. A framework upgrade is easier to review and roll back when it does not also introduce unrelated feature work or broad formatting changes.
1. Read the official guide for the target Next version
2. Update Next and required peers with pnpm
3. Apply documented migrations or codemods
4. Run pnpm typecheck and pnpm --filter @repo/web build
5. Test critical browser flowsEach step produces evidence before the release is exposed to users.
// Wrong
pnpm add next@latest react@latest
// merge when it compiles locally
// Right
// Follow the supported upgrade path and inspect every migration warning.Major versions can change assumptions in routing, rendering, and dependencies.
Definition
A successful compile is necessary but cannot prove browser behavior, cookie handling, or product API integration.
In simpler words
Test the critical routes and flows that join Next rendering to the Nest API after the upgrade.
Inspect lockfile changes to ensure the dependency graph changed only as intended.
Record the target version, migration notes, and verification results in the upgrade PR.
Live playground
Order the upgrade steps from migration research to browser verification.
Follow the official upgrade guide; typecheck + build before merge.
next-upgrading
Test
At least 10 questions — mix of concept, syntax, practical, and logic. Score ≥ 80% (enforced by the API) to save progress.
Checking your session…
10 questions · concept 3 · syntax 2 · practical 3 · logic 2