Serializing nested objects

[obsgolem]

Summary

Is there a canonical way to serialize a struct which contains another JsValue?

Additional Details

I am trying to implement bindings for https://cesium.com/learn/cesiumjs/ref-doc/Viewer.html, and am running into issues creating bindings for the ConstructorOptions object. This object you need to be able to provide an ImageryProvider, which itself is a javascript object which needs to be generated by a constructor. However, since JsValue does not implement Serialize you can't #[derive(Serialize)] for a struct which contains an ImageryProvider. My question is what is the canonical way to handle transporting such data from Rust to Javascript?

[obsgolem]

I hacked around this using the following macro which I modified from the hashlit crate:

macro_rules! object {
    ($($key:expr => $value:expr,)+) => { object!($($key => $value),+) };
    ($($key:expr => $value:expr),*) => {
        {
            let mut _obj = ::js_sys::Object::new();
            $(
                js_sys::Reflect::set(&_obj, &($key.into()), &($value.into())).unwrap();
            )*
            _obj
        }
    };
}

If there is no better way to do this kind of thing, then this might be useful to build into the crate.

[DennisJensen95]

Bump, I would very much like an answer to the same 👍

[daxpedda]

You might want to take a look at serde-wasm-bindgen.

Alternatively, the most straightforward way would be to use JSON.stringify() and JSON.parse(), which is also what is used by the deprecated Serde feature of wasm-bindgen.