budibase/packages/bbui/src/ButtonGroup/ButtonGroup.svelte

<script>
    import "@spectrum-css/buttongroup/dist/index-vars.css"
    export let vertical = false

    function group(element) {
        const buttons = Array.from(element.getElementsByTagName('button'))
        buttons.forEach(button => {
            button.classList.add('spectrum-ButtonGroup-item')
        })
    }
</script>

<div use:group class="spectrum-ButtonGroup" class:spectrum-ButtonGroup--vertical={vertical}>
    <slot />
</div>