puppeteer-core
Version:
A high-level API to control headless Chrome over the DevTools Protocol
28 lines • 869 B
JavaScript
/**
* @license
* Copyright 2022 Google Inc.
* SPDX-License-Identifier: Apache-2.0
*/
/**
* @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];
}
};
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