@atlaskit/editor-plugin-code-block-advanced/dist/es2019/nodeviews/extensions/firstCodeBlockInDocument.js

CodeBlockAdvanced plugin for @atlaskit/editor-core

import { EditorView as CodeMirror } from '@codemirror/view';
import { editorExperiment } from '@atlaskit/tmp-editor-statsig/editor-experiment';

/**
 * Keeps 'first-node-in-document' class if it was added to a codeBlock by
 * platform/packages/editor/editor-plugin-block-controls/src/pm-plugins/first-node-dec-plugin.ts
 *
 * @param getPos
 * @returns CodeMirror Extension
 * @example
 */
export const firstCodeBlockInDocument = getPos => {
  if (editorExperiment('platform_editor_controls', 'variant1')) {
    return CodeMirror.editorAttributes.of({
      class: (getPos === null || getPos === void 0 ? void 0 : getPos()) === 0 ? 'first-node-in-document' : ''
    });
  } else {
    return [];
  }
};