@atlaskit/editor-plugin-show-diff/dist/es2019/pm-plugins/calculateDiff/normalizeTextNodes.js

ShowDiff plugin for @atlaskit/editor-core

import { Fragment } from '@atlaskit/editor-prosemirror/model';

/**
 * Returns a copy of `node` in which adjacent text nodes with identical marks are joined, the same
 * normalisation ProseMirror applies whenever it rebuilds a node's content. A document parsed straight
 * from ADF keeps such split runs, so two documents with identical content and positions can still
 * differ in child count.
 */
export const normalizeTextNodes = node => {
  if (node.isText || node.childCount === 0) {
    return node;
  }
  const children = [];
  node.content.forEach(child => children.push(normalizeTextNodes(child)));
  return node.copy(Fragment.fromArray(children));
};