# Extollo runtime type validation proof-of-concept

You can read more about this proof-of-concept here:

[https://garrettmills.dev/blog/2022/01/14/Runtime-Data-Validation-from-TypeScript-Interfaces/](https://garrettmills.dev/blog/2022/01/14/Runtime-Data-Validation-from-TypeScript-Interfaces/)

To run it:

```shell
pnpm i
pnpm build
```

The intermediate files are generated in the `exbuild/` directory, and the final compiled output is in the `lib/` directory.

Access the Zod schema:

```txt
node --experimental-repl-await lib/cli.js shell
powered by Extollo, © 2022 Garrett Mills
Access your application using the "app" global.
(extollo) ➤ Home = require('./lib/app/http/controllers/main/Home.controller').Home
[class Home extends Controller]
(extollo) ➤ home = new Home
Home { request: undefined }
(extollo) ➤ home.getValidator().getZod().shape
{
  username: ZodString {
    spa: [Function (anonymous)],
    superRefine: [Function (anonymous)],
    _def: { checks: [Array], typeName: 'ZodString' },
    transform: [Function: bound ],
    default: [Function: bound ],
    _regex: [Function (anonymous)],
    nonempty: [Function (anonymous)]
  },
  password: ZodString {
    spa: [Function (anonymous)],
    superRefine: [Function (anonymous)],
    _def: { checks: [Array], typeName: 'ZodString' },
    transform: [Function: bound ],
    default: [Function: bound ],
    _regex: [Function (anonymous)],
    nonempty: [Function (anonymous)]
  },
  rememberMe: ZodOptional {
    spa: [Function (anonymous)],
    superRefine: [Function (anonymous)],
    _def: { innerType: [ZodBoolean], typeName: 'ZodOptional' },
    transform: [Function: bound ],
    default: [Function: bound ]
  }
}
```