How to use the @hyperapp/html.h4 function in @hyperapp/html

if (refresh) {
        view.push(span({class: 'loader'}));
        actions.fetchImage(image_id);
    }

    return div(
        Nav(state.status.config.REGISTRY_STORAGE_DELETE_ENABLED),
        div({class: 'my-3 my-md-5'},
            div({class: 'container'}, view)
        ),
        // Delete modal
        append_delete_model ? Modal(
            div({class: 'modal-dialog'},
                div({class: 'modal-content'}, [
                    div({class: 'modal-header text-left'},
                        h4({class: 'modal-title'}, 'Confirm Delete')
                    ),
                    div({class: 'modal-body'},
                        p('Are you sure you want to delete this image and tag' + (image.data.tags.length === 1 ? '' : 's') + '?')
                    ),
                    div({class: 'modal-footer'}, [
                        button({
                            class:           'btn btn-danger',
                            type:            'button',
                            onclick:         actions.deleteImageClicked,
                            'data-image_id': image_id,
                            'data-digest':   digest
                        }, 'Yes I\'m sure'),
                        button({class: 'btn btn-default', type: 'button', 'data-dismiss': 'modal'}, 'Cancel')
                    ])
                ])
            ),

export default (state, actions) => params => {
    let content = null;

    if (!state.repos || !state.repos.length) {
        // empty
        content = div({class: 'alert alert-success'}, [
            h4('Nothing to see here!'),
            p('There are no images in this Registry yet.'),
            div({class: 'btn-list'},
                Link({class: 'btn btn-success', to: '/instructions/pushing'}, 'How to push an image')
            )
        ]);

    } else {
        content = TableCard([
                'Name',
                'Tags'
            ], {
                name: {manipulator: Manipulators.imageName()},
                tags: {manipulator: Manipulators.joiner(', ')}
            }, state.repos);
    }