PeakLab
Our expertise

Expert TypeScript agency

Typed JavaScript

TypeScript

Our TypeScript development services

TypeScript application development

We build web applications in strict TypeScript from the ground up, typed APIs, domain models, and shared schemas that eliminate runtime surprises in production.

JavaScript to TypeScript migration

We migrate your existing JavaScript codebase to TypeScript incrementally, introducing types without disrupting your team's workflow or shipping schedule.

Type system design and audits

We design robust type hierarchies, discriminated unions, and generic utilities that make your codebase self-documenting and resilient to change.

Monorepo TypeScript architecture

We set up and maintain TypeScript monorepos with shared packages, project references, and incremental builds for large-scale frontend and full-stack projects.

Why build with TypeScript?

01

Catch errors before they reach production

TypeScript's static analysis surfaces type errors, null reference bugs, and incorrect function signatures at compile time, before a single user is affected.

02

Refactoring becomes safe

Renaming a function or changing a data shape propagates correctly across the entire codebase with IDE support, turning risky refactors into confident improvements.

03

Superior IDE experience

Autocomplete, inline documentation, go-to-definition, and find-all-references work reliably with TypeScript, dramatically improving developer productivity and onboarding speed.

04

Self-documenting code

Type signatures act as always-accurate documentation. New developers understand function contracts and data shapes without reading external docs or digging through runtime logs.

Why trust us with your project?

Strict TypeScript by default

We always enable strict mode. No `any`, no type assertions without justification, every type decision is deliberate and documented.

Domain modeling expertise

We use TypeScript's type system to model your business domain accurately, discriminated unions, branded types, and exhaustive checks that encode business rules.

Full-stack typing with shared schemas

We share Zod schemas or tRPC definitions between frontend and backend so API contracts are validated and typed end-to-end, eliminating entire categories of integration bugs.

Smooth migration experience

We have migrated large JavaScript codebases to TypeScript without stopping feature development, using a battle-tested incremental strategy.

Our process with TypeScript

01

Type system design

Before writing application code, we design the core domain types, API contracts, and shared schemas that will anchor the entire project.

02

Toolchain configuration

We configure tsconfig.json in strict mode, set up path aliases, and integrate with your build tool for fast incremental compilation.

03

Feature implementation

We build features with types as the primary design artifact, interfaces and types are defined before implementations, guiding development.

04

CI type checking and handover

Type checking runs in CI on every pull request. We hand over a fully typed codebase with zero type errors and documented type decisions.

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