Schema-backed binary serialization

[crishoj]

In an Elysia project, I enjoy typesafe message exchange through WebSockets thanks to Typebox.

Given that both client and server agree on the schema, JSON seems like a rather wasteful serialization format. Simply put, why transmit field names over-the-wire when the schema already dictates field names?

This made me wonder: Is there any binary serialization format that plays nicely with Typebox?

Something like a tool that would generate e.g. a FlatBuffer schema from a Typebox type. (Actually took a stab at this, but dates are not supported by FlatBuffer...)