index.js
function Node(key, value) {
  this.key = key;
  this.value = value;
  this.degree = 0;
  this.parent = undefined;
  this.child = undefined;
  this.sibling = undefined;
}
function Node(key, value) {
  this.key = key;
  this.value = value;
  this.degree = 0;
  this.parent = undefined;
  this.child = undefined;
  this.sibling = undefined;
}
function Node ( key , value ) { this . key = key ; this . value = value ; this . degree = 0 ; this . parent = undefined ; this . child = undefined ; this . sibling = undefined ; }
Creates a Binomial Heap node.

@constructor
@param {Object} key The key of the new node.
@param {Object} value The value of the new node.
Creates a Binomial Heap node .