export function shortView(node) {
    if (!node) return { typeTag: '?', label: '?', meta: [] };
    switch (node.type) {
        case 'score':
            return {
                typeTag: 'score',
                label: node.info?.title ?? '(untitled)',
                meta: node.info?.composer ? [{ key: 'composer', value: node.info.composer }] : [],
            };
        case 'instrument':
            return { typeTag: 'instrument', label: node.name, meta: [] };
        case 'variation': {
            const dep = node.dependsOn;
            const label = dep == null ? '(root variation)'
                : isNaN(Number(dep)) ? `ATTR: ${dep}`
                : String(dep);
            return { typeTag: 'variation', label, meta: [] };
        }
        case 'label_spec':
            return { typeTag: 'label', label: node.label ?? '(no label)', meta: [] };
        case 'bar':
            return { typeTag: 'bar', label: node.id, meta: [] };
        case 'voice':
            return { typeTag: 'voice', label: node.name, meta: [] };
        case 'offset':
            return { typeTag: 'tick', label: String(node.tick ?? '?'), meta: [] };
        case 'motif':
            return { typeTag: 'motif', label: node.label, meta: node.isStatic ? [{ key: 'static', value: '✓' }] : [] };
        case 'stem_note':
            return { typeTag: 'stem_note', label: String(node.pitch), meta: [] };
        case 'article': {
            const n = node.properties?.length ?? 0;
            return { typeTag: 'article', label: node.name, meta: n ? [{ key: 'props', value: n }] : [] };
        }
        default:
            return { typeTag: node.type, label: node.type, meta: [] };
    }
}