Floting-UI: “Uncaught TypeError: e is undefined”

Here is my reprex:

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Floating-UI Example</title>
    <style>
        .tooltip {
            position: relative;
            cursor: pointer;
            display: inline-block;
            margin-top: 100px;
        }
        .tooltip-content {
            display: none;
            position: absolute;
            background: #333;
            color: #fff;
            padding: 5px;
            border-radius: 5px;
            white-space: pre-wrap;
            z-index: 1000;
        }
    </style>
    <script src="https://unpkg.com/@floating-ui/[email protected]/dist/floating-ui.dom.umd.js"></script>
</head>
<body>
    <div class="tooltip" id="tooltip">
        Hover over me
        <div class="tooltip-content" id="tooltip-content">
            Tooltip content
        </div>
    </div>

    <script>
        document.addEventListener('DOMContentLoaded', function() {
            const { computePosition, offset, flip, shift } = window.FloatingUIDOM;
            const tooltip = document.getElementById('tooltip');
            const tooltipContent = document.getElementById('tooltip-content');

            tooltip.addEventListener('mouseenter', () => {
                tooltipContent.style.display = 'block';
                computePosition(tooltip, tooltipContent, {
                    placement: 'top',
                    middleware: [
                        offset({ mainAxis: 10 }),  // Correct usage of offset
                        flip(),
                        shift({ padding: 5 })
                    ],
                }).then(({ x, y }) => {
                    Object.assign(tooltipContent.style, {
                        left: `${x}px`,
                        top: `${y}px`
                    });
                }).catch(error => {
                    console.error("Error computing position:", error);
                });
            });

            tooltip.addEventListener('mouseleave', () => {
                tooltipContent.style.display = 'none';
            });
        });
    </script>
</body>
</html>