Macro convert_js::jsv

macro_rules! jsv {
    (undefined) => { ... };
    (null) => { ... };
    ($v : literal) => { ... };
    ({ }) => { ... };
    ({ $($k : tt $(: $v : expr) ?), + $(,) ? }) => { ... };
    (@ impl set_prop_and_check $obj : ident($k : tt) : $v : expr) => { ... };
    (@ impl set_prop_and_check $obj : ident($k : tt)) => { ... };
    (@ impl resolve_prop_key $k : ident) => { ... };
    (@ impl resolve_prop_key $k : literal) => { ... };
    (@ impl resolve_prop_key [$k : expr]) => { ... };
    (@ impl resolve_prop_key $k : tt) => { ... };
    ([]) => { ... };
    ([$($arr_item : expr), + $(,) ?]) => { ... };
}