demo_db_right_join.js:
C:\Users\My Name>node demo_db_right_join.js

[
  { user: 'John', favorite: 'Chocolate Heaven' },
  { user: 'Peter', favorite: 'Chocolate Heaven' },
  { user: 'Amy', favorite: 'Tasty Lemons' },
  { user: null, favorite: 'Vanilla Dreams' }
]