npm install -g gulp
npm install
gulp
node dist/server.js

This should result in something like:

Users API listening on port 3000

!KEEP THIS TAB OPEN! it will wait for your requests

In your browser, go to http://localhost:3000

This should show a friendly message :).

Other methods, like POST and PATCH and DELETE can only be made from either Postman or from your Angular application.

Response body:

Response - 200 - Body: {"message": "Users API up and running!"}

Response - 200 - Body:

[
  {
    "firstName": "Piet",
    "lastName": "Friet",
    "age": 72,
    "email": "[email protected]",
    "profilePictureUrl": "http://retailparkroermond.com/nl/horeca/piet-friet/afbeeldingen/piet-friet-l.png",
    "_id": "8m0nGYgSttzCNG0t"
  }
]

{
  "firstName": "Piet",
  "lastName": "Friet",
  "age": 72,
  "email": "[email protected]",
  "profilePictureUrl": "http://retailparkroermond.com/nl/horeca/piet-friet/afbeeldingen/piet-friet-l.png"
}

{
  "firstName": "Piet",
  "lastName": "Friet",
  "age": 72,
  "email": "[email protected]",
  "profilePictureUrl": "http://retailparkroermond.com/nl/horeca/piet-friet/afbeeldingen/piet-friet-l.png",
  "_id": "B1w2s30z2L3n0Jrj"
}

{
  "firstName": "NewFirstName"
}

(empty)

{"Reason": "That user does not exist"}

{
  "firstName": "NewFirstName"
}

(empty)

{"Reason": "That user does not exist"}