message: chore: fix problematic definition
diff: -import { GraphQLType } from 'graphql';
  import { ShowHintOptions as HintOptions } from 'codemirror';
  -export namespace GraphiQL {
  - export type GetDefaultFieldNamesFn = (type: GraphQLType) => string[];
  -}
  -
  export namespace CodeMirror {
  export type ShowHintOptions = HintOptions & { container: HTMLElement | null };
  }
  