GraphQL Yoga Server Setup

import { createServer } from "@graphql-yoga/node";

const server = createServer({
  schema: {
    typeDefs: `
      type Query { modules(category: String): [Module!]! }
      type Module  { id: ID! title: String! category: String! }
    `,
    resolvers: {
      Query: {
        modules: (_, { category }, { db }) =>
          db.module.findMany({ where: category ? { categorySlug: category } : {} }),
      },
    },
  },
  context: { db },
});

server.start();