resolvers.js

module.exports = {
  Query: {
    hello (root, args, context) {
      return 'Hello World!!'
    }
  },
  Mutation: {
    async createUser (root, args, {DB}) {
      const {username, email, password} = args
      const user = await DB.User.createUser(email, username, password)
      return user
    },
    async login (root, args, {DB}) {
      const {email, password} = args
      const user = await DB.User.auth(email, password)
      return user
    }
  }
}