A static Astro blog with MDX posts in a zod-validated content collection (draft/published/unlisted status), React islands, Tailwind with typography, sitemap and RSS, optional generated OG images, and vitest plus astro check.
A Python JSON API on FastAPI and Uvicorn with no frontend, managed with uv and make. pytest runs the real app in process, structlog request logs carry ids, errors share one envelope, and verify fails when the committed OpenAPI spec drifts.
A Go command-line tool with cobra commands, viper config (file, env, flags), structured errors with actionable suggestions, human and JSON output, testify tests with race detection and a coverage floor, and golangci-lint.
A Go HTTP API on the standard library (net/http, slog) with no web framework. JSON resources share one error envelope and request logging, the server shuts down cleanly on SIGINT and SIGTERM, and race-enabled tests run against the built binary.
FastAPI backend (uv, ruff, mypy strict, pytest) plus a React single-page app (Vite, React Router in SPA mode, TanStack Query, Tailwind, shadcn/ui) that talks to the API through a typed client generated from its OpenAPI spec.
A Tauri desktop app with Rust logic in a crate workspace behind a thin shell, and a React/Vite frontend that calls it through tauri-specta typed IPC or a mock transport in the browser and tests. Biome, Vitest, Playwright, clippy and a check on crate dependency direction cover both halves.