weseek__growi/packages/remark-drawio/src/utils/global.ts

import { IGraphViewerGlobal } from '../interfaces/graph-viewer';

export const isGraphViewerGlobal = (val: unknown): val is IGraphViewerGlobal => {
  return (typeof val === 'function' && 'createViewerForElement' in val && 'processElements' in val);
};