buildType function

[langpavel]

Why?

You can write entire schema in GraphQL and then call buildSchema. But you cannot write only single type or partials and then combine them simply. Why?

There is some effort:

• graphql/utilities - buildASTSchema, extendSchema, concatAST but it is not clear how to use properly
• graphql-utilities
• graphql-tools

Example: contentType.graphql:

type ContentType {
  path: String!
  title: String!
  perex: String!
}

Then with today tooling it should be possible to write:

import { ContentType } from './types/contentType.graphql';

export default function createSchema(context) {
  return new Schema({
    query: new ObjectType({
      name: 'Query',
      fields: {
        content: {
          type: ContentType,
          args: {
            path: { type: new NonNull(StringType) },
          },
          async resolve({ request }, { path, locale }) {
            const { success, fileName, extension } = await resolveFileName(path, locale);
            if (!success) {
              return null;
            }

            const source = await readFile(fileName, { encoding: 'utf8' });
            return parseContent(path, source, extension);
          },
        }
      },
  });
}

Goal

Write modules containing types in GraphQL (*.graphql files), then compose this pieces in meaningful schema in your app.

As you see, you can mix pure GraphQL with custom field resolvers — this is only goal of mine.

Now-a-day it is piece of cake to optimize all the things using require/babel/webpack plugins..

@leebyron Can you help me with this a little? What is the right way for modular GraphQL backends? :-)

[migueloller]

The discussion for graphql-utilities is here: #474

[IvanGoncharov]

It's a pretty big change that should go through a series of RC to polish interface and ensure it covers the majority of use cases. So it should be planned for 15.0.0