next-apollo-graphql-setup/pages/api/graphql.js

import { gql, ApolloServer } from 'apollo-server-micro'

const Articles = [
    {id: 1, title: 'Article 1'},
    {id: 2, title: 'Article 2'},
    {id: 3, title: 'Article 3'},
    {id: 4, title: 'Article 4'},
    {id: 5, title: 'Article 5'}
]

const typeDefs = gql`
    type Query {
        articles: [Article]
    }

    type Article {
        id: ID
        title: String
    }
`;

const resolvers = {
    Query: {
        articles: (_parent, _args, _context) => Articles
    }
};

const apolloServer = new ApolloServer({
    typeDefs,
    resolvers
});

const handler = apolloServer.createHandler({
    path: "/api/graphql"
});

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

export default handler