json to graphql typesystem

Command Line Interface to convert legacy JSON/REST data to the start of a graphQL schema.

For example, turn this Star Wars SWAPI.co data

{
    "name": "Luke Skywalker",
    "height": "172",
    "mass": "77",
    "hair_color": "blond",
    "skin_color": "fair",
    "eye_color": "blue",
    "birth_year": "19BBY",
    "gender": "male",
    "homeworld": "https://swapi.co/api/planets/1/",
    "films": [
        "https://swapi.co/api/films/2/",
        "https://swapi.co/api/films/6/",
        "https://swapi.co/api/films/3/",
        "https://swapi.co/api/films/1/",
        "https://swapi.co/api/films/7/"
    ],
    "species": [
        "https://swapi.co/api/species/1/"
    ],
    "vehicles": [
        "https://swapi.co/api/vehicles/14/",
        "https://swapi.co/api/vehicles/30/"
    ],
    "starships": [
        "https://swapi.co/api/starships/12/",
        "https://swapi.co/api/starships/22/"
    ],
    "created": "2014-12-09T13:50:51.644000Z",
    "edited": "2014-12-20T21:17:56.891000Z",
    "url": "https://swapi.co/api/people/1/"
}

into this:

type people {
  name: String
  height: String
  mass: Date
  hair_color: String
  skin_color: String
  eye_color: String
  birth_year: String
  gender: String
  homeworld: Id
  films: [Id]
  species: [Id]
  vehicles: [Id]
  starships: [Id]
  created: Date
  edited: Date
  url: Id
}

It also handles nested data with arrays or objects. e.g. (comments added)

type rootType_belongs_to_collection {   // type inside rootType.belongs_to_collection
  id: Int
  name: String
  poster_path: String
  backdrop_path: String
}
type rootType_genres {                  // type inside rootType.genres[]
  id: Int
  name: String
}
type rootType {
  adult: Boolean
  backdrop_path: String
  belongs_to_collection: rootType_belongs_to_collection   // see type above
  budget: Int
  genres: [rootType_genres]                               // see type above
}