Iterable document.evaluate wrapper.

xpath.js

/**
 * Executes an XPath expression returning an iterable node list.
 * @param {string} expression XPath expression.
 * @param {Node} node Optional context node for query. Default is document element.
 * @param {XPathNSResolver | ((prefix: string) => string | null) | null} nsResolver Optional namespace resolver function.
 * @returns {Iterator<Node>} Result nodes iterator.
 */
function* xpath(expression, node = document.documentElement, nsResolver = null)
{
	const xPathResult = document.evaluate(
		expression,
		node,
		nsResolver,
		XPathResult.ANY_TYPE,
		null
	);

	while (true)
	{
		const result = xPathResult.iterateNext();
		if (result == null)
			break;

		yield result;
	}
}