in site-ui/gulp.d/tasks/build-preview-pages.js [174:185]
function findNavPath (currentUrl, node = [], current_path = [], root = true) {
for (const item of node) {
const { url, items } = item
if (url === currentUrl) {
return current_path.concat(item)
} else if (items) {
const activePath = findNavPath(currentUrl, items, current_path.concat(item), false)
if (activePath) return activePath
}
}
if (root) return []
}