n-api: add napi_get_own_property_names

Author: himself65

src/js_native_api.h

@@ -514,6 +514,9 @@ napi_get_all_property_names(napi_env env,
                             napi_key_filter key_filter,
                             napi_key_conversion key_conversion,
                             napi_value* result);
+NAPI_EXTERN napi_status napi_get_own_property_names(napi_env env,
+                                                    napi_value object,
+                                                    napi_value* result);
 
 // Instance data
 NAPI_EXTERN napi_status napi_set_instance_data(napi_env env,

src/js_native_api_v8.cc

@@ -922,7 +922,7 @@ napi_status napi_get_all_property_names(napi_env env,
     case napi_key_include_prototypes:
       collection_mode = v8::KeyCollectionMode::kIncludePrototypes;
       break;
-    case napi_key_own_only:
+    case napi_key_include_own_properties:
       collection_mode = v8::KeyCollectionMode::kOwnOnly;
       break;
     default:

test/js-native-api/test_object/test.js

@@ -6,7 +6,7 @@ const assert = require('assert');
 const test_object = require(`./build/${common.buildType}/test_object`);
 
 
-const object = {
+let object = {
   hello: 'world',
   array: [
     1, 94, 'str', 12.321, { test: 'obj in arr' }
@@ -203,14 +203,9 @@ assert.strictEqual(newObject.test_string, 'test string');
   assert.strictEqual(obj.foo, 'baz');
 }
 
-{
-  // Verify that napi_get_property_names gets the right set of property names,
-  // i.e.: includes prototypes, only enumerable properties, skips symbols,
-  // and includes indices and converts them to strings.
-
-  const object = Object.create({
-    inherited: 1
-  });
+object = Object.create({
+  inherited: 1
+});
 
   const fooSymbol = Symbol('foo');
 
@@ -224,13 +219,28 @@ assert.strictEqual(newObject.test_string, 'test string');
   });
   object[5] = 5;
 
+{
+  // Verify that napi_get_property_names gets the right set of property names,
+  // i.e.: includes prototypes, only enumerable properties, skips symbols,
+  // and includes indices and converts them to strings.
+
   assert.deepStrictEqual(test_object.GetPropertyNames(object),
                          ['5', 'normal', 'inherited']);
 
   assert.deepStrictEqual(test_object.GetSymbolNames(object),
                          [fooSymbol]);
 }
 
+{
+  // Verify that napi_get_own_property_names gets
+  // the right set of property names,
+  // i.e.: skips symbols and prototypes,
+  // and includes indices and converts them to strings.
+
+  assert.deepStrictEqual(test_object.GetOwnPropertyNames(object),
+                         ['5', 'normal', 'unenumerable']);
+}
+
 // Verify that passing NULL to napi_set_property() results in the correct
 // error.
 assert.deepStrictEqual(test_object.TestSetProperty(), {

test/js-native-api/test_object/test_object.c

@@ -111,6 +111,26 @@ static napi_value GetSymbolNames(napi_env env, napi_callback_info info) {
   return output;
 }
 
+static napi_value GetOwnPropertyNames(napi_env env, napi_callback_info info) {
+  size_t argc = 1;
+  napi_value args[1];
+  NAPI_CALL(env, napi_get_cb_info(env, info, &argc, args, NULL, NULL));
+
+  NAPI_ASSERT(env, argc >= 1, "Wrong number of arguments");
+
+  napi_valuetype value_type0;
+  NAPI_CALL(env, napi_typeof(env, args[0], &value_type0));
+
+  NAPI_ASSERT(env,
+              value_type0 == napi_object,
+              "Wrong type of arguments. Expects an object as first argument.");
+
+  napi_value output;
+  NAPI_CALL(env, napi_get_own_property_names(env, args[0], &output));
+
+  return output;
+}
+
 static napi_value Set(napi_env env, napi_callback_info info) {
   size_t argc = 3;
   napi_value args[3];
@@ -479,6 +499,7 @@ napi_value Init(napi_env env, napi_value exports) {
     DECLARE_NAPI_PROPERTY("GetNamed", GetNamed),
     DECLARE_NAPI_PROPERTY("GetPropertyNames", GetPropertyNames),
     DECLARE_NAPI_PROPERTY("GetSymbolNames", GetSymbolNames),
+    DECLARE_NAPI_PROPERTY("GetOwnPropertyNames", GetOwnPropertyNames),
     DECLARE_NAPI_PROPERTY("Set", Set),
     DECLARE_NAPI_PROPERTY("SetNamed", SetNamed),
     DECLARE_NAPI_PROPERTY("Has", Has),