{#if unusedTree.length}
{#snippet treeNode(node: GroupNode)}
-
{node.group.name || `Group #${node.group.id}`}
{#if node.children.length}
{#each node.children as child (child.group.id)}
{@render treeNode(child)}
{/each}
{/if}
{/snippet}
{#each unusedTree as node (node.group.id)}
{@render treeNode(node)}
{/each}
{/if}