subscriptions-example.js

import {parse, Source} from 'graphql/language'
import {GraphQLSchema, GraphQLObjectType, GraphQLString} from 'graphql/type'
import {graphql} from 'graphql'

const whisperType = new GraphQLObjectType({
  name: 'Whisper',
  fields: () => ({
    whyAreYouWhispering: {
      type: GraphQLString
    }
  })
})

const screamType = new GraphQLObjectType({
  name: 'Scream',
  fields: () => ({
    dudeWhyAreYouScreaming: {
      type: GraphQLString
    }
  })
})

const schema = new GraphQLSchema ({
  // you can ignore this...graphql just wants to me to have a query
  query: new GraphQLObjectType({ name: 'RootQueryType', fields: { fooQuery: { type: whisperType, resolve: source => source } } }),


  subscription: new GraphQLObjectType({
    name :'Subscription',
    fields: {
      whispers: {
        type: whisperType,
        resolve: source => source
      },
      screams: {
        type: screamType,
        resolve: source => source
      }
    }
  })
});

const query = `
  subscription ListenWhispers {
      whispers {
        whyAreYouWhispering
      }
  }

  subscription ListenScreams {
      screams {
        dudeWhyAreYouScreaming
      }
  }
`;
const rootVal = {whyAreYouWhispering: 'the baby is sleeping'};
graphql(schema, query, rootVal, {}, 'ListenWhispers').then(console.log);
// => { data: { whispers: { whyAreYouWhispering: 'the baby is sleeping' } } }