Cav

Cav is a collection of powerful primitives for building full stack web apps with Deno. Guiding principles:

• Modular, maintainable server definitions
• No-fuss data serialization
• Automatic end-to-end typesafety
• Clarity > brevity
• Use The Platform

Status: Ready to play with, but not ready for production.

Goals

• It should come with everything a modern web server might need, without relying on third-party services (minus the database)
  • Routing
  • Static asset serving
  • Signed cookies and JWTs
  • Web sockets
  • Form and JSON parsing / validation
  • De/serialization of most data types, including Files, Dates, Maps, etc.
  • Dev-time bundling for TypeScript assets
  • Works with frontend frameworks like Preact
• “Hello world” should be as easy as deno running a tiny main.ts
  • Zero config
  • Zero CLI commands
• The client-side API should use types imported from the server to fully type requests and responses
  • End-to-end typesafety
  • Compatible with Zod data parsers
• Its syntax should be functional and declarative
  • Immutable, schema-like Router and Endpoint definitions
  • No hidden context
  • No middleware
  • No magic Yes magic 🧙‍♂️
• Production deployments should be a simple git-commit-push
  • Deno Deploy without a build step
• It should minimize the threat of supply chain attacks
  • Zero third-party dependencies

Inspirations

• Zod / tRPC
• Express / Koa / Oak
• superjson / devalue / json-dry