Function compile_json 

pub fn compile_json(
    spec: &str,
    facts: &str,
    fonts: &[Arc<[u8]>],
) -> Result<String, ComposeError>

compile across a JSON boundary: the spec and facts as JSON text, the result as JSON text ({project, assets, loudness, warnings}).

Errors

Returns where in the spec or facts, and why, they do not parse or the spec does not compile.

Panics

Never: a compiled project always serializes.