serialization produces Map object for structs with "flatten"

[Niedzwiedzw]

example:

#[derive(Serialize, Deserialize, Debug, Clone)]
pub struct ResultStatistics {
    #[serde(flatten)]
    pub basic: ConstraintConfig,
    pub total_price: f64,
    pub total_cpp: f64,
}

produces ES Map object on the wasm side.

[RReverser]

This is an unfortunate limitation of Serde itself, see serde-rs/serde#1346. Unfortunately, I don't think we can do anything on serde-wasm-bindgen side here.