graphql_schema.js

const postsQuery = {
  type: new GraphQLList(Post),
  args: {
    //to paginate
    limit: { type: GraphQLInt },
    offset: { type: GraphQLInt }
  },
  resolve(root, args, ctx) {
    return Post.findAll(args);
  }
};

const Query = new GraphQLObjectType({
  name: "AppQueries",
  description: "Root Schema",
  fields: () => ({
    posts: postsQuery
  })
});

const Schema = new GraphQLSchema({
  query: Query
});