Re: [heycam/webidl] Need pattern for feature detecting dictionary members (#107)

If I were to randomly propose some function on a dictionary's prototype,
I'd propose that typeof(Foo.prototype.bar) returns "string" if it's a
string and 'undefined' if it's not a valid member variable.




On Sat, Sep 11, 2021 at 5:00 AM Kagami Sascha Rosylight <
***@***.***> wrote:

> Random idea on my bed: constructors for dictionaries
>
> dictionary Foo {
>
>   (DOMString or boolean) bar;
>
> } ;
> // implicitly creates an interface-like constructor
>
> "bar" in Foo.prototype // typical existence check
> new Foo({ bar: "bar" }).bar === "bar" // type support check; string in this case
>
> Problem: massive namespace pollution 🤔
>
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