Allow to override existing schema with GraphQL-faker

[rossoha]

At the moment faker doesn't allow to override fields that already on the backend, but there might be a situation when existing API is not yet implemented and return some default value (like null). So it would be nice to have a way to override such a response.

Example error message: Field "User.firstName" already exists in the schema. It cannot also be defined in this type extension.

Example schema from server:

type User {
    _instanceName: String
     id: UUID
    firstName: String
    lastName: String
}

Example extension file content :

extend type User {  
  firstName: String @fake(type: firstName)
}

[joepk90]

If anyone is interested, I looked into this myself as it didn't look like the original creators were going to do this (as it's now been 3 1/2 years since this issue was opened, and 2 years since the last commit):

I forked project, refactored it and made this possible:
https://github.com/joepk90/graphql-faker-refactored/

By default (via the .env.example file) the project extends the following GraphQL API:
https://swapi-graphql.netlify.app/graphql

Example Schema extension to add to the Editor:

extend type Film {
  title: String @examples(values: [
    "The Terminator",
    "Terminator 2: Judgement Day",
    "Terminaator 3: Rise of the Machines"
  ])
  rating: Int @examples(values: [5, 4, 1])
}

Query to use in the GraphQL Playground:

query ExampleQuery {
  allFilms {
    films {
      title
      rating
      director
    }
  }
}

Hope others also find this useful :)