We've been working on open sourcing our streaming complex body parser/guard and wouldn't mind some more people contributing. It features:

- JSON, urlencoded AND multipart form data parsing

- Out-of-the-box constraints for resulting object depth, key amount and size; definable globally and per call, preventing resource exhaustion by bailing on the stream if limits are exceeded

- Multi-boundary (!) multipart form data parsing

- Multidimensional array form data with auto-increment and explicit indexes (formElement[] vs formElement[0])

- Object form data with dot notation, including arbitrary amounts of nesting with arrays (<input name="foo.bar[].baz" value="it works!" />)

- Typed output for the resulting object if you use a (user-specified) validator like Zod

- Optional automatic casting for numbers and booleans in form data

It's originally done for SvelteKit projects, but nothing's stopping you from using it in Hono, Next, etc. Thanks!