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/**
* @license
* Copyright 2022 Google Inc.
* SPDX-License-Identifier: Apache-2.0
*/
/**
* @internal
*/
export const xpathQuerySelectorAll = function* (
root: Node,
selector: string,
maxResults = -1
): Iterable<Node> {
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
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 as Node;
delete items[i];
}
};