Wrapping Event in a C++ class so that every where you pass an event it works. #1661
Description
in JavaScript I can do this
class MyEvent extends Event {
constructor(type, msg) {
super(type);
this.message = msg;
}
}
const target = new EventTarget();
const e = await new Promise(resolve => {
target.addEventListener('custom', resolve);
target.dispatchEvent(new MyEvent('custom', 'hello'));
});
assert.ok(e.message === 'hello');Is it possible to have MyEvent be a C++ class?
In my current attempt, when I call target.dispatchEvent I get
node:internal/event_target:220
throw new ERR_INVALID_THIS('Event');
^
TypeError [ERR_INVALID_THIS]: Value of "this" must be of type Event
at get type [as type] (node:internal/event_target:220:13)
at EventTarget.dispatchEvent (node:internal/event_target:755:40)
I tried setting the prototype chain in C++ and this passes
assert.ok(new MyEvent('custom', 'hello') instanceof Event);but of course it's not actually an Event, it's a non-event who's prototype chain contains Event which is what node is complaining about.
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