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LibJS: Add spec step comments to Object.hasOwn()

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This commit is contained in:
Linus Groh 2021-07-05 17:19:46 +01:00
parent 8195c31965
commit 4f2af65836
1 changed files with 7 additions and 2 deletions
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9
Userland/Libraries/LibJS/Runtime/ObjectConstructor.cpp
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@ -409,13 +409,18 @@ JS_DEFINE_NATIVE_FUNCTION(ObjectConstructor::create)
// 1 Object.hasOwn ( O, P ), https://tc39.es/proposal-accessible-object-hasownproperty/#sec-object.hasown // 1 Object.hasOwn ( O, P ), https://tc39.es/proposal-accessible-object-hasownproperty/#sec-object.hasown
JS_DEFINE_NATIVE_FUNCTION(ObjectConstructor::has_own) JS_DEFINE_NATIVE_FUNCTION(ObjectConstructor::has_own)
{ {
// 1. Let obj be ? ToObject(O).
auto* object = vm.argument(0).to_object(global_object); auto* object = vm.argument(0).to_object(global_object);
if (vm.exception()) if (vm.exception())
return {}; return {};
auto property_key = vm.argument(1).to_property_key(global_object);
// 2. Let key be ? ToPropertyKey(P).
auto key = vm.argument(1).to_property_key(global_object);
if (vm.exception()) if (vm.exception())
return {}; return {};
return Value(object->has_own_property(property_key));
// 3. Return ? HasOwnProperty(obj, key).
return Value(object->has_own_property(key));
} }
// 20.1.2.1 Object.assign ( target, ...sources ), https://tc39.es/ecma262/#sec-object.assign // 20.1.2.1 Object.assign ( target, ...sources ), https://tc39.es/ecma262/#sec-object.assign