puppeteer-core
Version:
A high-level API to control headless Chrome over the DevTools Protocol
38 lines • 1.4 kB
JavaScript
/**
* Copyright 2022 Google Inc. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* @internal
*/
export const xpathQuerySelectorAll = function* (root, selector, maxResults = -1) {
const doc = root.ownerDocument || document;
const iterator = doc.evaluate(selector, root, null, XPathResult.ORDERED_NODE_ITERATOR_TYPE);
const items = [];
let item;
// Read all results upfront to avoid
// https://stackoverflow.com/questions/48235278/xpath-error-the-document-has-mutated-since-the-result-was-returned.
while ((item = iterator.iterateNext())) {
items.push(item);
if (maxResults && items.length === maxResults) {
break;
}
}
for (let i = 0; i < items.length; i++) {
item = items[i];
yield item;
delete items[i];
}
};
//# sourceMappingURL=XPathQuerySelector.js.map