Right now deno_graph can include completely statically analyzable dynamic imports in the module graph. These are dynamic import calls that are passed a string literal (e.g. await import("./cli")).

I propose to extend this to include simple dynamic cases, like await import(`./islands/${path}`). This would include all files under ./islands/ in the module graph.

This would only work in files where import.meta.url is file:///, because remote specifiers can not be listed.

This is modeled after a similar feature in Vite: https://vitejs.dev/guide/features.html#dynamic-import.

Unlike Vite, we should support nested directories. We should bail on symlinks, and should bail when we the # of matched modules exceeds some predefined limit, like 1024.