addExtension like msgpackr

[Alistairot]

Hi, I have been using msgpackr in the past,
Now I want to switch to cbor-x.

in msgpackr, i add extension like this

addExtension({
	Class: MyCustomClass,
	type: 12,
	read: function(data) {
		Object.setPrototypeOf(data, MyCustomClass.prototype)
		return data
	},
	write: function(data) {
		return data
	}
})

// it is work good

but in cbor-x

addExtension({
    Class: MyCustomClass,
    tag: 9999,
    encode(data, encodeFn: (item: MyCustomClass) => Uint8Array) {
        return encodeFn(data); // infinite recursion
    },
    decode(data) {
        Object.setPrototypeOf(data, MyCustomClass.prototype);
        return data;
    }
})

// not work

How can I make it work like msgpackr?

[Alistairot]

addExtension({
    Class: MyCustomClass,
    tag: 9999,
    encode(data, encodeFn: (item: MyCustomClass) => Uint8Array) {
        return encodeFn(Object.assign({}, data)); // create new obj avoid infinite recursion
    },
    decode(data) {
        Object.setPrototypeOf(data, MyCustomClass.prototype);
        return data;
    }
})

That's OK.