[roadmap] MessagePack and UBJSON binary encoders

[Cryptoteep]

Goal

Add binary serialization formats alongside the text formats already supported (JSON, YAML, CSV, JSONL, Properties, TOML).

Proposed formats

• MessagePack — compact binary, widely used
• UBJSON — Universal Binary JSON

Proposed API

import { parse, stringify, OutputFormat } from 'jsoncraft';
// would extend OutputFormat with 'msgpack' | 'ubjson'

Since these are binary, the parse/stringify signatures may need to accept/return Uint8Array for binary formats while keeping string for text formats.

Acceptance

• Round-trip JSON → MessagePack → JSON preserves values
• Implementation stays dependency-free (the specs are small enough)

Interested? Drop a comment!