class Thing implements Disposable {
    x: number = 5;
    constructor() {}
    [Symbol.dispose]() {}
}

(async () => {
    using thing = new Thing();
    thing.x = 10;
})();

(function()
    return __TS__AsyncAwaiter(function(____awaiter_resolve)
        return ____awaiter_resolve(
            nil,
            __TS__Await(__TS__UsingAsync(
                nil,
                function(thing)
                    return __TS__AsyncAwaiter(function(____awaiter_resolve)
                        thing.x = 10
                    end)
                end,
                __TS__New(Thing)
            ))
        )
    end)
end)(nil)