/
XPathQuerySelector.ts
51 lines (49 loc) · 1.28 KB
/
XPathQuerySelector.ts
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/**
* 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 xpathQuerySelector = (
root: Node,
selector: string
): Node | null => {
const doc = root.ownerDocument || document;
const result = doc.evaluate(
selector,
root,
null,
XPathResult.FIRST_ORDERED_NODE_TYPE
);
return result.singleNodeValue;
};
/**
* @internal
*/
export const xpathQuerySelectorAll = (root: Node, selector: string): Node[] => {
const doc = root.ownerDocument || document;
const iterator = doc.evaluate(
selector,
root,
null,
XPathResult.ORDERED_NODE_ITERATOR_TYPE
);
const array: Node[] = [];
let item;
while ((item = iterator.iterateNext())) {
array.push(item);
}
return array;
};