title: Deconstructed parameters as a dictionary inside function
body: <p>Let's say I have a function as follows:</p>
  
  <pre><code>function myfunction(a,{b=1,c=2}={}){
   //... want to get the values b,c,... as k:v dict
  }
  </code></pre>
  
  <p>Is there any way to get the complete map of parameters inside the deconstructed dictionary, as a dictionary object inside the function? Effectively I want to be able to access the family of arguments beyond the 1st positional argument to store in memory, as if I were accessing it via <code>arguments[1]</code></p>