@atlaskit/editor-plugin-show-diff/dist/esm/pm-plugins/areDocsEqualByBlockStructureAndText.js

ShowDiff plugin for @atlaskit/editor-core

/**
 * Returns true if both nodes have the same tree structure (type and child count at every level).
 */
function isBlockStructureEqual(node1, node2) {
  if (node1.type !== node2.type || node1.childCount !== node2.childCount) {
    return false;
  }
  for (var i = 0; i < node1.childCount; i++) {
    if (!isBlockStructureEqual(node1.child(i), node2.child(i))) {
      return false;
    }
  }
  return true;
}

/**
 * Looser equality for "safe diff" cases: same full text content and same block structure
 * (e.g. text moved across text-node boundaries). Used when strict areNodesEqualIgnoreAttrs fails.
 * This is safe because we ensure decorations get applied to valid positions.
 */
export function areDocsEqualByBlockStructureAndText(doc1, doc2) {
  return doc1.textContent === doc2.textContent && doc1.nodeSize === doc2.nodeSize && isBlockStructureEqual(doc1, doc2);
}