Function validateXPath

util/xpath_utils.js:181–201

(xpath)

 * Validate XPath syntax and uniqueness
 */
export function validateXPath(xpath) {
    try {
        const result = document.evaluate(xpath, document, null, XPathResult.ANY_TYPE, null);
        let count = 0;
        let node = result.iterateNext();
        while (node) {
            count++;
            node = result.iterateNext();
        }
        return { 
            valid: true, 
            count: count,
            isUnique: count === 1 
        };
    } catch (e) {
        return { 
            valid: false, 
            error: e.message 
        };
    }
}