Can't create an empty set?

[paulcdejean]

Describe the Bug

In javascript you can all set() to create a new empty set.

However for some reason in js_sys the set's new function takes an initializer. This is completely different from how array works, where new takes no arguments and just returns an empty array.

Steps to Reproduce

Try and create a function that returns an empty set.

You need to initialize the set with a dummy object, then call clear() which is very silly.

Expected Behavior

You're not required to initialize new sets with a dummy value then call clear.

Actual Behavior

You have to create a set with a single value, then call clear().

[Liamolucko]

You can call Set::new(&JsValue::UNDEFINED) to create an empty set, since new Set(undefined) behaves the same as new Set().

I'm not sure why the API was designed this way rather than having separate Set::new and Set::new_with_iterable functions similar to Array, but it'd be a breaking change to change that now.

[daxpedda]

Changed this to an enhancement we can fix in the next breaking change.