helios-serde

Version-agnostic serialization for FHIR resources (R4, R4B, R5, R6).

Features

JSON support is always available — no extra feature flags required.

XML support requires the xml feature flag:

[dependencies]
helios-serde = { version = "...", features = ["xml"] }

Performance note

Enabling the xml feature introduces a ~2% overhead on JSON deserialization. For optimal performance, do not enable it if you don't need XML support.