#[wasm_bindgen]
#[derive(Debug, Clone, Copy)]
pub struct End;

#[wasm_bindgen]
#[derive(Debug)]
pub struct Data {
    pub end: End,
    pub value: LinkedHashMap<String, Box<dyn MOC>>,
}

#[wasm_bindgen]
#[derive(Debug, Hash, PartialEq, Eq)]
pub struct String {
    pub length: u16,
    pub value: std::string::String,
}

impl MOC for End {
    //snip
}

impl MOC for Data {
    //snip
}

impl MOC for String {
    //snip
}

如何将Data结构体导出为JS对象？(不需要包含特征的实现)