Default values ​​for Laravel 5.4+ new components?

Laravel 5.4+ allows you to use components with the following structure:

<div class="alert alert-{{ $type }}">
    <div class="alert-title">{{ $title }}</div>
    {{ $slot }}
</div>

      

        
        
        
      

    

Called as:

@component('alert', ['type' => 'danger'])
    @slot('title') 
        oh no 
    @endslot
    Foo
@endcomponent

      

        
        
        
      

    

Is there a blade pointer or handle to set defaults for the variables passed in?

For example, in the case above, if I don't pass "type", I get an error undefined variable

. I could do something like:

<div class="alert alert-{{ isset($type) ? $type : 'default' }}">

      

        
        
        
      

    

But the above looks verbose, especially if the variable is used at multiple points.