Language
TypeScript Development
We write TypeScript across the stack so the shape of a record is checked at the boundary and a rename cannot quietly break a screen three modules away.
Usage
What we build with TypeScript
- Application backends and API layers
- React and Next.js front ends
- Shared validation schemas used by client and server
- Integration adapters and workers
- Content collections that fail the build when an entry is malformed
- Command line tooling and build scripts
Rationale
Why we choose it
Refactoring becomes safe
Renaming a field or changing a shape surfaces every affected call site at compile time. Without that, a rename in a large codebase is an act of faith.
Types document the contract
A typed function signature is documentation that cannot go out of date, which matters most at handover.
One language across the boundary
The same types describe the API response and the component that renders it, so a mismatch is a compile error rather than a runtime surprise.
Practice
Architecture patterns we use
Parse at the boundary
External input is validated with a schema that produces a typed value. Inside the boundary the type is trusted because it was checked, not because it was declared.
Discriminated unions for state
Loading, success and error are modelled as one union rather than three loose booleans, which makes impossible states unrepresentable.
Strict mode always
Strict null checks on from the first commit. Adding them later to a large codebase is a project in itself.
Typed content collections
Content entries are typed, so a missing field or a link to a slug that does not exist fails the build rather than producing a broken page.
Related work
Case studies to explore
These projects share relevant engineering concerns. Each study identifies its documented technology choices.
- B2B Lead Intake & CRM AutomationA completed integration for an anonymous B2B services client: website lead funnel, quote forms, CRM API ingestion, pipeline and AI automations, Resend email, and n8n orchestration.
- White-Label Fitness & Revenue-Sharing PlatformA multi tenant fitness SaaS for influencers using Next.js 14, Supabase, Prisma, subdomain routing, Stripe Connect revenue splits, and AI-generated 12 week training programs.
- Configurable CRM for Service BusinessesOne configurable CRM with tailored pipelines for lawn care, pest control, real estate, HVAC, nonmedical beauty and wellness services, and auto detailing.
Writing
Articles about TypeScript
- 16 September 2026 · 4 min readGuardrails for AI agents that take real actionsAn agent with tools can change your data. The controls that matter are enforced in code, not requested in a prompt.
- 15 September 2026 · 4 min readIdempotency: the idea that prevents duplicate everythingA lost response can turn a reasonable retry into a duplicate order, email or charge. Idempotency helps, but its boundary must include the actual effect.
- 10 September 2026 · 4 min readWhen to use an orchestrator and when to write codeA workflow tool and a service solve the same problems differently. Four criteria that settle which one a specific process needs.
- 5 September 2026 · 4 min readWebhooks done properlyReceiving webhooks is easy. Receiving them so that duplicates, replays, out of order delivery and outages do not corrupt your data takes six specific things.
- 3 September 2026 · 4 min readBuilding an API other people will useAn internal API that becomes a partner API exposes every undocumented assumption. What to settle before the first external caller.
- 4 September 2026 · 4 min readTesting what matters rather than chasing coverageA coverage percentage tells you almost nothing. Ranking behaviour by what a failure would cost tells you where to spend.
Build with our TypeScript engineers
Tell us what you are building and what it has to connect to. We will come back with an approach, a scope and what it would take.
- A mutual NDA is signed before project details are shared.
- Scope is fixed in writing before any build starts.
- You own the source code, the IP and the documentation at delivery.
- Support plans are available and tailored on a discovery or technical call.