Fix convert_params_object()

It was just completely busted.

Author: penberg

integration-tests/tests/sync.test.js

@@ -69,6 +69,9 @@ test.serial("Statement.get() [named]", async (t) => {
 
   var stmt = undefined;
 
+  stmt = db.prepare("SELECT :b, :a");
+  t.deepEqual(stmt.raw().get({ a: 'a', b: 'b' }), ['b', 'a']);
+
   stmt = db.prepare("SELECT * FROM users WHERE id = :id");
   t.is(stmt.get({ id: 0 }), undefined);
   t.is(stmt.get({ id: 1 }).name, "Alice");

src/lib.rs

@@ -460,13 +460,11 @@ fn convert_params_object(
     v: Handle<'_, JsObject>,
 ) -> NeonResult<libsql::Params> {
     let mut params = vec![];
-    let keys = v.get_own_property_names(cx)?;
-    for i in 0..keys.len(cx) {
-        let key: Handle<'_, JsValue> = keys.get(cx, i)?;
-        let key = key.downcast_or_throw::<JsString, _>(cx)?;
-        let v = v.get(cx, key)?;
+    for idx in 0..stmt.stmt.parameter_count() {
+        let name = stmt.stmt.parameter_name((idx + 1) as i32).unwrap();
+        let name = name.to_string();
+        let v = v.get(cx, &name[1..])?;
         let v = js_value_to_value(cx, v)?;
-        let name = stmt.stmt.parameter_name((i + 1) as i32).unwrap().to_string();
         params.push((name, v));
     }
     Ok(libsql::Params::Named(params))