API server using graphql-yoga

server.js

import { GraphQLServer } from 'graphql-yoga'

// Import the resolvers
import resolvers from 'src/resolvers'

// Import our custom directive
import isAuthenticated from 'src/isAuthenticated'

const server = new GraphQLServer({
  typeDefs: `${__dirname}/schema.graphql`,
  resolvers,
  schemaDirectives: { isAuthenticated }
  context: req => ({ req }),
})

server.start(() => console.log(`GraphQL server is running on port 4000`))