datamorph-rs vs shori vs proteus

Data transformation library using declarative specifications

Flexible parsing and transformation utilities for structured data. #[derive(Parser)] adds methods like .parse().json(), .toml(), .bin(), .map(), and .from() to simplify conversions using common wrappers like Arc, Mutex, Box, OnceCell, etc.

Proteus is intended to make dynamic transformation of data using serde serializable, deserialize using JSON and a JSON transformation syntax similar to Javascript JSON syntax. It also supports registering custom Actions to be used in the syntax.