function htmlTreeAsString(elem, keyAttrs) {
    // try/catch both:
    // - accessing event.target (see getsentry/raven-js#838, #768)
    // - `htmlTreeAsString` because it's complex, and just accessing the DOM incorrectly
    // - can throw an exception in some circumstances.
    try {
        var currentElem = elem;
        var MAX_TRAVERSE_HEIGHT = 5;
        var MAX_OUTPUT_LEN = 80;
        var out = [];
        var height = 0;
        var len = 0;
        var separator = ' > ';
        var sepLength = separator.length;
        var nextStr = void 0;
        // eslint-disable-next-line no-plusplus
        while (currentElem && height++ < MAX_TRAVERSE_HEIGHT) {
            nextStr = _htmlElementAsString(currentElem, keyAttrs);
            // bail out if
            // - nextStr is the 'html' element
            // - the length of the string that would be created exceeds MAX_OUTPUT_LEN
            //   (ignore this limit if we are on the first iteration)
            if (nextStr === 'html' || (height > 1 && len + out.length * sepLength + nextStr.length >= MAX_OUTPUT_LEN)) {
                break;
            }
            out.push(nextStr);
            len += nextStr.length;
            currentElem = currentElem.parentNode;
        }
        return out.reverse().join(separator);
    }
    catch (_oO) {
        return '<unknown>';
    }
}
Given a child DOM element, returns a query-selector statement describing that
and its ancestors
e.g. [HTMLElement] => body > div > input#foo.btn[name=baz]
@returns generated DOM path