message: always extend the schema when creating for the first time
diff: @@ -159,7 +159,7 @@ export class GraphQLCache {
  return this._fragmentDefinitionsCache.get(rootDir) || new Map();
  }
  - const includes = projectConfig.includes.map(path => path.split('*')[0]);
  + const includes = projectConfig.includes.map(filePath => filePath.split('*')[0]);
  const filesFromInputDirs = await this._watchmanClient.listFiles(rootDir, {
  path: includes,
  });
  @@ -427,7 +427,7 @@ export class GraphQLCache {
  return null;
  }
  - if (queryHasExtensions && this._graphQLFileListCache.has(this._configDir)) {
  + if (this._graphQLFileListCache.has(this._configDir)) {
  schema = this._extendSchema(schema, schemaPath, projectName);
  }
  