• Conditional assignments
• conditional and logical chains
• a ? yay : boo and ??
• hey["horse"] and hey.horse
• obj.hasOwnProperty("__rerum") and obj?.__rerum
• tic, single, and double quote string after = and in foo("param", 'parame', `paramete`)
• const and let
• semicolon that ends a line of code
• Object Minting Utility for db-controller #82
• pass db.collection into controllers
• separate controller actions from the database manager
• etc.

Line it up. Be consistent. Test what you change, don't break anything.