only first argument seen from constructor

[bahamas10]

In a test project using the latest available v8plus on npm I have

src/node_test.c

#include "v8plus_glue.h"

static char *ident = "foo";

static nvlist_t *
node_test_ctor(const nvlist_t *ap, void **cpp)
{
        printf("constructor called\n");
        nvlist_print_json(stdout, (nvlist_t *)ap);
        printf("\n");

        *cpp = ident;

        return v8plus_void();
}

static void
node_test_dtor(void *op)
{
        op = op; // -Werror
}

static nvlist_t *
node_test_foo(void *op, const nvlist_t *ap)
{
        op = op; // -Werror
        ap = ap; // -Werror
        return v8plus_void();
}

/*
 * v8+ boilerplate
 */
const v8plus_c_ctor_f v8plus_ctor = node_test_ctor;
const v8plus_c_dtor_f v8plus_dtor = node_test_dtor;
const char *v8plus_js_factory_name = "_new";
const char *v8plus_js_class_name = "TestBinding";
const v8plus_method_descr_t v8plus_methods[] = {
        {
                md_name: "foo",
                md_c_func: node_test_foo
        }
};
const uint_t v8plus_method_count = sizeof (v8plus_methods) / sizeof (v8plus_methods[0]);

const v8plus_static_descr_t v8plus_static_methods[] = {};
const uint_t v8plus_static_method_count = 0;

and

lib/index.js

var binding = require('./test_binding');
binding._new('foo', 'bar', 'baz');

when I run lib/index.js i see

$ node lib/index.js 
constructor called
{"0":"foo"}

it appears that only the first argument is being processed for some reason