Async Components

Sprig's file-based router supports lazy page and layout modules through Vite's import.meta.glob. It loads the matched page/layout chain on demand, shows loading or failure content, caches successful modules, and ignores stale results after navigation or disposal.

For non-route content, visibleIsland(loader, placeholder) defers calling a dynamic-import loader until its placeholder intersects the viewport (or loads immediately if IntersectionObserver is unavailable). Sprig does not provide a general defineAsyncComponent API or Vue's Suspense integration.