behavior does not init properly when parameters are "optional"

[J-Griffin]

I'm using Hyperscript 0.9.12 and attempting to do something similar to what the Draggable example does. Default to "me" if a specific click target is not passed in.

The init block does not work.

<script type="text/hyperscript">
    behavior alertMe(clickElement)
        init
            if no clickElement set the clickElement to me
        end

        on click from clickElement
            call alert('behavior is working!')
        end
    end
</script>

<!-- Works: -->
<i _="install alertMe(clickElement: me)">click me</i>

<!-- Does not work: -->
<i _="install alertMe()">click me</i>