TypeScript
TypeScript is JavaScript with a structural type system — Microsoft's open-source compiler that catches whole classes of refactor regressions at build time instead of in production. TantraDev writes TypeScript in strict mode on every new codebase. The discipline is not the types themselves; it is that the contract between two services or two layers becomes the documentation.
Concepts that travel with this one.
Architecture rarely lives in isolation — these are the terms that come up in the same conversation.
Node.js
Node.js is the V8-based JavaScript runtime for server workloads — non-blocking I/O, single-threaded event loop, and a package ecosystem that covers nearly every adapter you would need to talk to a payment provider, a queue, or a database. TantraDev uses Node (with TypeScript) for API services where I/O dominates compute and team velocity matters as much as raw throughput.
React
React is Meta's component-driven UI library — the runtime under nearly every modern web frontend TantraDev ships. We use React with TypeScript by default, with Server Components where the platform supports them and React Native where the same product needs to ship to iOS and Android with one team. The library is a tool; the design system around it is the deliverable.
Next.js
Next.js is Vercel's React framework with file-based routing, server components, route-level data fetching, and edge-runnable middleware. TantraDev ships Next.js for marketing surfaces, dashboards, and customer-facing storefronts where SEO, server-rendering, and developer ergonomics need to coexist. This site itself is a Next.js App Router build.
Building a system where TypeScript is the load-bearing decision?
30 minutes on the phone, one page in your inbox — what to build, what to skip, what it will cost. You keep the audit even if we are not the right fit.