When to use Interface and Model in TypeScript / Angular2

Question

I recently watched a Tutorial on Angular 2 with TypeScript, but unsure when to use an Interface and when to use a Model to hold data structures.

Example of interface

Answer 1

The Interface describes either a contract for a class or a new type. It is a pure Typescript element, so it doesn't affect Javascript.

A model, and namely a class, is an actual JS function which is being used to generate new objects.

I want to load JSON data from a URL and bind to the Interface/Model.

Go for a model, otherwise it will still be JSON in your Javascript.