graphql-compose-relay/mjs/nodeInterface.mjs

Plugin for `graphql-compose` which wraps graphql types with Relay specific logic.

import { InterfaceTypeComposer } from 'graphql-compose';
const NodeTC = InterfaceTypeComposer.createTemp({
  name: 'Node',
  description: 'An object, that can be fetched by the globally unique ID among all types.',
  fields: {
    id: {
      type: 'ID!',
      description: 'The globally unique ID among all types.'
    }
  },
  resolveType: payload => {
    // `payload.__nodeType` was added to payload via nodeFieldConfig.resolve
    return payload.__nodeType ? payload.__nodeType : null;
  }
});
export const NodeInterface = NodeTC.getType();
export function getNodeInterface(sc) {
  if (sc.hasInstance('Node', InterfaceTypeComposer)) {
    return sc.get('Node');
  }

  sc.set('Node', NodeTC);
  return NodeTC;
}