ts-ast-viewer VS ts-to-zod

TypeScript AST Viewer

TypeScript AST Viewer - This viewer was useful in guessing the internal concepts and behavior of the Compiler API.

For those who are trying to use the typescript API to build file you can use this : https://ts-ast-viewer.com/

You can check ast-viewer Consider this example: typescript type Result = keyof HTMLDivElement Click in ast viewer on Result type, you will see something like that: Type keyof HTMLDivElement ... value:"align" value:"addEventListener" value:"removeEventListener" ... If you want to have more control over AST, you can check ts-ast-viewer repo

(As an aside, I used the ts-ast-viewer web app to generate this hierarchy. ts-ast-viewer is a project started by David Sherret that allows you to visualize and explore the AST for any TypeScript program. It was invaluable in helping me figure out the structures for this project.)

You could use something like this https://github.com/fabien0102/ts-to-zod

YES! I've introduced ts-to-zod into my codebase only yesterday, and it's served my needs exactly. It doesn't handle generics or mapped types, but that's a fair price to pay.

It also works the other way, you can define a zod schema and you can infer types for your data from it.

https://github.com/fabien0102/ts-to-zod

The closest that I know of (and I have not used this) is zod-fast-check. It generates fast-check “arbitraries” (test data generators) for property-based testing based on zod schemas. Of course, this requires that you use zod to define your types, which has some downsides. Fortunately there is another tool, ts-to-zod, (which I also have not used) which will codegen zod schemas based on TS type definitions. If you thread these four libraries together you should end up with the ability to write random tests on generated data with very little overhead. In theory.

Okay, that's an improvement! We can use TypeScript's native type syntax to define the interface, and augment it with JSDoc comments for any properties that can't be natively expressed. So, to use this with Zod, we need to convert it from the TypeScript syntax to the Zod syntax. Luckily, Fabien Bernard has spearheaded the excellent ts-to-zod project, which looks through interfaces defined in a file and outputs the equivalent Zod schemata for them.