<!DOCTYPE html>
<!--refer to https://wpt.live/css/cssom-view/DOMRectList.html -->
<body>
<div id="x">x</div>
<script src="../include.js"></script>
<script>
    function print_class_string(object) {
        println({}.toString.call(object));
    }
    test(() => {
        const x = document.getElementById("x");
        const range = document.createRange();
        range.selectNodeContents(x);
        const domRectList = range.getClientRects();
        print_class_string(domRectList);
        print_class_stri