graphql-geojson-schema-ex.js

const typeDefs = `
  scalar Coordinates

  type PointGeometry {
    type: String!
    coordinates: Coordinates!
  }

  type PointProps {
    id: Int!
    lat: Float
    lon: Float
  }

  type PointObject {
    type: String!
    geometry: PointGeometry
    properties: PointProps
  }

  type FeatureCollection {
    type: String!
    features: [PointObject]
  }

  type Query {
    transit_feed: FeatureCollection
  }
`;