if(typeof window !== "undefined"){
  var Gun = window.Gun;
} else { 
  var Gun = require('gun/gun');
}

const rel_ = Gun.val.rel._;  // '#'
const node_ = Gun.node._;  // '_'

Gun.chain.unset = function(node){
	if( this && node && node[node_] && node[node_].put && node[node_].put[node_] && node[node_].put[node_][rel_] )
		this.put( { [node[node_].put[node_][rel_]]:null} );
	return this;
}