/// Wrapper that bridges a foreign JavaScript object to a Rust trait.
///
/// Holds the JS object via a persistent napi reference (`ObjectRef`) rather than
/// a borrowed `Object` transmuted to `'static`. The reference is released in
/// `dispose()` (and defensively in `Drop`) so the outstanding handle no longer
/// pins the libuv event loop, letting Node/worker threads exit cleanly.
pub struct {{ wrapper_name }} {
env: napi::sys::napi_env,
/// Thread `new()` ran on — always the JS thread. See the sync fast/slow split
/// (`gen_sync_method_body`) and the drop-hazard guard (`release_ref`).
js_thread: std::thread::ThreadId,
obj_ref: std::sync::Mutex<Option<napi::bindgen_prelude::ObjectRef<false>>>,
cached_name: String,
{% for f in extra_fields %}
{{ f.name }}: {{ f.ty }},
{% endfor %}
}