Function _createIdMaps

www/js/_hyperscript.esm.js:3707–3715

(oldNode, newContent)

  return !oldNode.id || oldNode.id === newNode.id;
}
function _createIdMaps(oldNode, newContent) {
  var oldIdElements = _queryEltAndDescendants(oldNode, "[id]");
  var newIdElements = newContent.querySelectorAll("[id]");
  var persistentIds = _createPersistentIds(oldIdElements, newIdElements);
  var idMap = /* @__PURE__ */ new Map();
  _populateIdMapWithTree(idMap, persistentIds, oldNode.parentElement, oldIdElements);
  _populateIdMapWithTree(idMap, persistentIds, newContent, newIdElements);
  return { persistentIds, idMap };
}
function _createPersistentIds(oldIdElements, newIdElements) {
  var duplicateIds = /* @__PURE__ */ new Set(), oldIdTagNameMap = /* @__PURE__ */ new Map();
  for (var { id, tagName } of oldIdElements) {