Monorepo using pnpm with a backend, frontend and generated type-guards purely from typescript type definitions. The generator is powered by the awsome typescript-json library.
This demo shows how to build a monorepo with a (potentially publishable) package containing types + generated type checks.
This comes in handy if you want to build a full app with typescript and add some low-maintenance type checking in the backend or frontend. DX will also be greatly enhanced because all type checks are generated based on your already existing type definitions, so you do not have to maintain two types of schemas.
Install deps via pnpm install and then run pnpm dev
This will first generate all necessary type checking functions in the types package and start backend and frontend for
you.
In this demo only one ApiRequest type is defined, which should be already enough.
We have to use ttypescript (not a typo) and not skip the typescript compiler which
would be the case if we were to use esbuild-based bundlers.
That's why we use rollup to bundle our types and guards (see ApiRequest.isApiRequest).
This demo uses only TSON.is. Check out the docs for typescript-json
because there are a lot more options
for validations.