text: const { GraphQLServer } = require ('graphql-yoga')
  var dt = require ('./datefns')
  
  const typeDefs = `
  type Query {
    date: String!
    season: String!
  }
  `
  const resolvers = {
    Query: {
      date: () => dt.getIsoDate(),
      season: (root) => "Testing",
    }
  }
  
  const server = new GraphQLServer ({
    typeDefs,
    resolvers,
  })
  server.start(() => console.log ('Server is running on http://localhost:4000'))
  