For any javascript object, e.g.:
const obj = {
x : 3,
y : true,
z : function() {}
};
A call obj.toString() will by default yield: [object Object] . Some other objects, like the browser Window object, will yield: [object Window] if printed on dev tools.
We can force a value different than [object Object] by executing this:
Object.defineProperty(
obj,
Symbol.toStringTag,
{
configurable: true, // if might be changed/redefined.
value: ‘MyCoolObj’ // put here your object description.
});
Now, obj will be identified as:
Tagging special objects has never been easier than this.
Addendum
The native side of things would look like this:
// for an existing object or template
object->Set(
v8::Symbol::GetToStringTag(isolate),
v8::String::NewFromUtf8(isolate, "YOUR_STRING_CLASS_HERE"),
static_cast<v8::PropertyAttribute>(
v8::ReadOnly | v8::DontEnum));
// you also could just (e.g. in interface_template):
a_function_template->SetClassName(
v8::String::NewFromUtf8(isolate,"YOUR_STRING_CLASS_HERE"));
Quantum observations 