text: const { gql } = require('apollo-server');
  
  const typeDefs = gql`
    type Query {
      users(limit: Int = 100): [User]
      user(id: String): User
      numUsers: Int
    }
  
    type User @key(fields: "id") {
      id: ID!
      username: String
      barcode: String
    }
  `;
  
  module.exports = typeDefs;