Technology Stack

Testio is built...

System Architecture

Testio is built...

Frontend Application

apps/web

React SPA...

React v18 Hook

Vite Bundler

Zustand State

Tailwind CSS

TanStack Query Async

Backend API

apps/api

Node.js Server...

Fastify Framework

Prisma ORM

Zod Validation

JWT Auth

Snippet Engine

packages/snippet

Client Script...

Vanilla JS Zero deps

esbuild Bundler

IntersectionObs Native API

System Architecture

How data flows...

graph LR Visitor[Visitor Browser] -->|Requests Script| CDN CDN -->|Serves| Snippet[Testio Snippet] Snippet -->|DOM Changes| Visitor Snippet -->|Events| API[Testio API] API -->|Persists| DB[(PostgreSQL)] Dashboard[Admin Dashboard] -->|Reads| API