brew services start mongodb-community@4.2
or
mongod --config /usr/local/etc/mongod.conf --fork
npm start
POST /api/users
GET /api/users/:userId
PUT /api/users/:userId
DELETE /api/users/:userId
GET /api/users/:userid/inventory
GET /api/users
POST /api/items
GET /api/items/:itemId
PUT /api/items/:itemId
DELETE /api/items/:itemId
GET /api/items