graphql-tag

import { buildASTSchema, graphql } from 'https://deno.land/x/graphql_deno@v15.0.0/mod.ts'
import { gql } from 'https://deno.land/x/graphql_tag/mod.ts'

const typeDefs = gql`
  type Query {
    hello: String
  }
`

const query = `{ hello }`

const resolvers = { hello: () => 'world' }

const schema = buildASTSchema(typeDefs)

console.log(await graphql(schema, query, resolvers))