Hello.
I released my utile library with some helper functions.
I'm most proud of its binary (de)serializer. You can look at the tests here:
https://github.com/Temtaime/utile/blob/main/source/utile/binary/tests.d#L13

There's no much docs except unittests, but feel free to contribute / report issues.
With the serializer you can describe almost all file format as a struct and it will take care of the rest.

Kind regards.