Next.js + Apollo GraphQL + Nexus.js

graphql.ts

import { ApolloServer } from 'apollo-server-micro'
import type { NextApiRequest, NextApiResponse, PageConfig } from 'next'
import schema from '../../api/schema'

const server = new ApolloServer({ schema })
const serverHandler = server.start()
  .then(() => server.createHandler({ path: '/api/graphql' }))

export default async function handler(
  req: NextApiRequest,
  res: NextApiResponse,
) {
  res.setHeader('Access-Control-Allow-Origin', '*')
  res.setHeader('Access-Control-Allow-Headers', 'content-type')

  if (req.method === 'OPTIONS') {
    res.status(200).end()
    return
  }

  await (await serverHandler)(req, res)
}

export const config: PageConfig = {
  api: {
    bodyParser: false,
  },
}

index.ts

export * from './post'

nexus-typegen.ts

/**
 * This file was generated by Nexus Schema
 * Do not make changes to this file directly
 */







declare global {
  interface NexusGen extends NexusGenTypes {}
}

export interface NexusGenInputs {
}

export interface NexusGenEnums {
}

export interface NexusGenScalars {
  String: string
  Int: number
  Float: number
  Boolean: boolean
  ID: string
}

export interface NexusGenObjects {
  Post: { // root type
    body?: string | null; // String
    id?: number | null; // Int
    published?: boolean | null; // Boolean
    title?: string | null; // String
  }
  Query: {};
}

export interface NexusGenInterfaces {
}

export interface NexusGenUnions {
}

export type NexusGenRootTypes = NexusGenObjects

export type NexusGenAllTypes = NexusGenRootTypes & NexusGenScalars

export interface NexusGenFieldTypes {
  Post: { // field return type
    body: string | null; // String
    id: number | null; // Int
    published: boolean | null; // Boolean
    title: string | null; // String
  }
  Query: { // field return type
    drafts: Array<NexusGenRootTypes['Post'] | null>; // [Post]!
  }
}

export interface NexusGenFieldTypeNames {
  Post: { // field return type name
    body: 'String'
    id: 'Int'
    published: 'Boolean'
    title: 'String'
  }
  Query: { // field return type name
    drafts: 'Post'
  }
}

export interface NexusGenArgTypes {
}

export interface NexusGenAbstractTypeMembers {
}

export interface NexusGenTypeInterfaces {
}

export type NexusGenObjectNames = keyof NexusGenObjects;

export type NexusGenInputNames = never;

export type NexusGenEnumNames = never;

export type NexusGenInterfaceNames = never;

export type NexusGenScalarNames = keyof NexusGenScalars;

export type NexusGenUnionNames = never;

export type NexusGenObjectsUsingAbstractStrategyIsTypeOf = never;

export type NexusGenAbstractsUsingStrategyResolveType = never;

export type NexusGenFeaturesConfig = {
  abstractTypeStrategies: {
    isTypeOf: false
    resolveType: true
    __typename: false
  }
}

export interface NexusGenTypes {
  context: any;
  inputTypes: NexusGenInputs;
  rootTypes: NexusGenRootTypes;
  inputTypeShapes: NexusGenInputs & NexusGenEnums & NexusGenScalars;
  argTypes: NexusGenArgTypes;
  fieldTypes: NexusGenFieldTypes;
  fieldTypeNames: NexusGenFieldTypeNames;
  allTypes: NexusGenAllTypes;
  typeInterfaces: NexusGenTypeInterfaces;
  objectNames: NexusGenObjectNames;
  inputNames: NexusGenInputNames;
  enumNames: NexusGenEnumNames;
  interfaceNames: NexusGenInterfaceNames;
  scalarNames: NexusGenScalarNames;
  unionNames: NexusGenUnionNames;
  allInputTypes: NexusGenTypes['inputNames'] | NexusGenTypes['enumNames'] | NexusGenTypes['scalarNames'];
  allOutputTypes: NexusGenTypes['objectNames'] | NexusGenTypes['enumNames'] | NexusGenTypes['unionNames'] | NexusGenTypes['interfaceNames'] | NexusGenTypes['scalarNames'];
  allNamedTypes: NexusGenTypes['allInputTypes'] | NexusGenTypes['allOutputTypes']
  abstractTypes: NexusGenTypes['interfaceNames'] | NexusGenTypes['unionNames'];
  abstractTypeMembers: NexusGenAbstractTypeMembers;
  objectsUsingAbstractStrategyIsTypeOf: NexusGenObjectsUsingAbstractStrategyIsTypeOf;
  abstractsUsingStrategyResolveType: NexusGenAbstractsUsingStrategyResolveType;
  features: NexusGenFeaturesConfig;
}


declare global {
  interface NexusGenPluginTypeConfig<TypeName extends string> {
  }
  interface NexusGenPluginInputTypeConfig<TypeName extends string> {
  }
  interface NexusGenPluginFieldConfig<TypeName extends string, FieldName extends string> {
  }
  interface NexusGenPluginInputFieldConfig<TypeName extends string, FieldName extends string> {
  }
  interface NexusGenPluginSchemaConfig {
  }
  interface NexusGenPluginArgConfig {
  }
}

post.ts

import { extendType, objectType } from "nexus";

export const Post = objectType({
  name: 'Post',
  definition(t) {
    t.int('id')
    t.string('title')
    t.string('body')
    t.boolean('published')
  },
})

export const PostQuery = extendType({
  type: 'Query',
  definition(t) {
    t.nonNull.list.field('drafts', {
      type: 'Post',
      resolve() {
        return [
          { id: 1, title: 'title', body: 'body', published: false },
        ]
      }
    })
  },
})

schema.graphql

### This file was generated by Nexus Schema
### Do not make changes to this file directly


type Post {
  body: String
  id: Int
  published: Boolean
  title: String
}

type Query {
  drafts: [Post]!
}

schema.ts

import { makeSchema } from "nexus";
import path from "path";
import * as types from './graphql';

const schema = makeSchema({
  types,
  outputs: {
    typegen: path.join(process.cwd(), 'generated/nexus-typegen.ts'),
    schema: path.join(process.cwd(), 'generated/schema.graphql'),
  },
})

export default schema