How to add description and title via the API

[tacman]

How do I add a description (and title, etc.) via the API? The examples all appear to be data- attributes

        import 'https://cdn.jsdelivr.net/gh/mcstudios/glightbox/dist/js/glightbox.min.js';

        var exampleApi = GLightbox({ selector: null });
        fetch('https://dummyjson.com/products')
            .then(response => response.json())
            .then(data => {
                data.products.forEach(product => {
                    product.images.forEach( i => {
                        exampleApi.insertSlide({
                            href: i,
                            // content: '<p>some html to append in the slide</p>',
                            // description: "A description"
                        });

                    })
                });
                exampleApi.open();

            })
            .catch(err => console.error(err))

[tacman]

    <script type="module">
        import 'https://cdn.jsdelivr.net/gh/mcstudios/glightbox/dist/js/glightbox.min.js';

        var exampleApi = GLightbox({ selector: null });
        exampleApi.insertSlide( {
            'href': 'https://picsum.photos/1200/800',
            'type': 'image',
            'title': 'My Title',
            'description': 'Example',
        });
        exampleApi.open();
</script>

throws an error:

stimulus.index-b5b1d00e42695b8959b4a1e94e3bc92a.js:7 application #start glightbox.min.js:1 Uncaught TypeError: v.getAttribute is not a function at e.value (glightbox.min.js:1:52654) at glightbox.min.js:1:41042 at glightbox.min.js:1:22791 at HTMLImageElement. (glightbox.min.js:1:14623)

glightbox.min.js:1 Uncaught TypeError: v.getAttribute is not a function at e.value (glightbox.min.js:1:52654) at glightbox.min.js:1:41042 at glightbox.min.js:1:22791 at HTMLImageElement. (glightbox.min.js:1:14623)