{
 node(id: 123) {
   id
 }
}

{
 node(id: 123) {
   id
   fragment on Video {
		url
   }
 }
}

query {
  node(id: 123) {
    id,
    ...F1
  }
}
fragment F1 on Video {
	url
}

class Store {}
class Video {}
let store = new Store()
let video = new Video()

let nodeDefs = nodeDefinitions(
  (globalId) => {
    let type = fromGlobalId(globalId).type
    let id = fromGlobalId(globalId).id
    if (type === 'Store') {
      return store
    }
    if (type === 'Video') {
      console.log('type Video!!!!!')
      return docClient.query(
        Object.assign(
          {},
          {TableName: pokemonTable},
          {KeyConditionExpression: 'id = :id'},
          {ExpressionAttributeValues: { ':id': id }}
        )
      ).promise().then(dataToConnection)
    }
    return null
  },
  (obj) => {
    if (obj instanceof Store) {
      return storeType
    }
    if (obj instanceof Video) {
      console.log('instanceof Video!!!')
      return videoType
    }
    return null
  }
)