Shipping Next.js apps your team won't dread, Syntheon

Next.js is the most popular React framework for good reason. But without conventions, a Next.js codebase can become a maze of inconsistent patterns. Here's how we keep ours maintainable.

Colocate by feature, not by type

Don't put all your components in components/ and all your hooks in hooks/. Group by feature: everything related to "billing" lives together.

text
src/
  features/
    billing/
      components/
      hooks/
      utils/
      billing.test.ts
    auth/
      components/
      hooks/
      auth.test.ts

Testing that pays for itself

We follow a simple testing strategy:

Unit tests for business logic and utilities
Component tests for critical UI interactions
E2E tests for the happy path of each core flow

The boring stuff that matters

Use TypeScript strict mode from day one
Enforce import ordering with ESLint
Set up pre-commit hooks for formatting and linting
Document architectural decisions in ADRs

Boring is a feature. If your framework choices are exciting, you're probably doing it wrong.