Graphql-config does not recognize Apollo Graphql @client directive

I'm using Apollo Client with React, graphql-tag loaded with Webpack, and graphql-config to maintain the schema on the client.

There is a file ./myclient/src/features/stats/graphql/getStart.graphql

query GetStart {
    start @client
}

where start and @client don't validate with the IDE graphql plugin because they are not included in the auto generated schema.

The ./myclient/.graphqlconfig file

{
    "projects": {
    "client": {
      "schemaPath": "schema.graphql",
      "extensions": {
        "endpoints": {
          "dev": "http://localhost:3000/graphql"
        }
      }
    }
  }
}

Webpack is configured to load the graphql schema on the client with

{
  test: /\.(graphql|gql)$/,
  exclude: /node_modules/,
  use: 'graphql-tag/loader',
},

It will load the server schema correctly. But, how do I configure it to validate or ignore the start @client which is causing Unknown field "start" on object "Query" and Unknown directive "@client" errors?

It is possible to define client side schema for Apollo client, the docs. I created a file ./src/apollo/graphql/typeDefs.graphql that contained the type definitions.

directive @client on FIELD

type RestParams {
    limit: Int
    page: Int
}

extend type Query {
    restParams: RestParams
}

I imported the typeDefs.graphql into the client.js file and added typeDefs to the ApolloClient constructor options.

import { ApolloClient } from 'apollo-client';
import { ApolloLink } from 'apollo-link';
import { InMemoryCache } from 'apollo-cache-inmemory';

import TYPE_DEFS from './graphql/typeDefs.graphql';
import createHttpLink from './links/httpLink';
import createErrorLink from './links/errorLink';
import createAuthLink from './links/authLink';

const errorLink = createErrorLink();
const httpLink = createHttpLink();
const authLink = createAuthLink();

const cache = new InMemoryCache({});

const client = new ApolloClient({
  cache,
  link: ApolloLink.from([
    authLink,
    errorLink,
    httpLink,
  ]),
  // resolves,
  typeDefs: TYPE_DEFS,
  connectToDevTools: true,
});

export default client;

Not are the type definitions discoverable by the IDE but they also are discoverable by the Apollo Chrome inspector plugin.