Fig. 13 — TypeScript & Next.js
Hire TypeScript developers
Types are the cheapest documentation you will ever write and the only kind that cannot go stale. We use them as the design, not as decoration.
Strict by default
Every project starts in strict mode and stays there. `any` is a decision that needs a reason, not a shortcut past a red squiggle. The payoff arrives later, when someone changes a shape and the compiler lists every place that assumption was relied on — instead of a user finding out.
- Explicit types on everything exported; inference left alone where it is obvious
- Unknown for external data, then narrowed — never trusted straight into the app
- Schema-based validation at boundaries, with the types derived from the schema
- Typecheck in the pipeline, so a type error cannot reach production
Next.js the way it works now
The App Router changed enough that a lot of published advice is quietly wrong. We track what the installed version actually does — server and client boundaries, caching behaviour, metadata and route types — rather than carrying patterns forward from older releases because they used to work.
Performance is a requirement, not a phase
Core Web Vitals get budgeted at the start: fonts self-hosted and subset, images sized and modern-format, motion kept to properties the compositor can handle. It is far cheaper than an optimisation project after launch, and it is the difference visitors actually feel.