feat: add ability to serve static by using dynamic imports (#197)

* feat: add ability to serve static by using dynamic imports

* serveStaticViaImport: make manifest optional

* serveStaticViaImport: add error log

app/package.json

@@ -250,7 +250,8 @@
     },
     "./dist/main.css": "./dist/ui/main.css",
     "./dist/styles.css": "./dist/ui/styles.css",
-    "./dist/manifest.json": "./dist/static/.vite/manifest.json"
+    "./dist/manifest.json": "./dist/static/.vite/manifest.json",
+    "./static/*": "./dist/static/*"
   },
   "typesVersions": {
     "*": {

app/src/adapter/bun/bun.adapter.ts

@@ -21,8 +21,8 @@ export async function createApp<Env = BunEnv>(
 
    return await createRuntimeApp(
       {
-         ...config,
          serveStatic: serveStatic({ root }),
+         ...config,
       },
       args ?? (process.env as Env),
       opts,
@@ -53,6 +53,7 @@ export function serve<Env = BunEnv>(
       onBuilt,
       buildConfig,
       adminOptions,
+      serveStatic,
       ...serveOptions
    }: BunBkndConfig<Env> = {},
    args: Env = {} as Env,
@@ -70,6 +71,7 @@ export function serve<Env = BunEnv>(
             buildConfig,
             adminOptions,
             distPath,
+            serveStatic,
          },
          args,
          opts,

app/src/adapter/index.ts

@@ -1,9 +1,11 @@
 import { App, type CreateAppConfig } from "bknd";
 import { config as $config } from "bknd/core";
 import { $console } from "bknd/utils";
-import type { MiddlewareHandler } from "hono";
+import type { Context, MiddlewareHandler, Next } from "hono";
 import type { AdminControllerOptions } from "modules/server/AdminController";
 import { Connection } from "bknd/data";
+import type { Manifest } from "vite";
+import { guessMimeType } from "media";
 
 export { Connection } from "bknd/data";
 
@@ -140,3 +142,54 @@ export async function createRuntimeApp<Args = DefaultArgs>(
 
    return app;
 }
+
+/**
+ * Creates a middleware handler to serve static assets via dynamic imports.
+ * This is useful for environments where filesystem access is limited but bundled assets can be imported.
+ *
+ * @param manifest - Vite manifest object containing asset information
+ * @returns Hono middleware handler for serving static assets
+ *
+ * @example
+ * ```typescript
+ * import { serveStaticViaImport } from "bknd/adapter";
+ *
+ * serve({
+ *   serveStatic: serveStaticViaImport(),
+ * });
+ * ```
+ */
+export function serveStaticViaImport(opts?: { manifest?: Manifest }) {
+   let files: string[] | undefined;
+
+   // @ts-ignore
+   return async (c: Context, next: Next) => {
+      if (!files) {
+         const manifest =
+            opts?.manifest || ((await import("bknd/dist/manifest.json")).default as Manifest);
+         files = Object.values(manifest).flatMap((asset) => [asset.file, ...(asset.css || [])]);
+      }
+
+      const path = c.req.path.substring(1);
+      if (files.includes(path)) {
+         try {
+            const content = await import(`bknd/static/${path}?raw`, {
+               assert: { type: "text" },
+            }).then((m) => m.default);
+
+            if (content) {
+               return c.body(content, {
+                  headers: {
+                     "Content-Type": guessMimeType(path),
+                     "Cache-Control": "public, max-age=31536000, immutable",
+                  },
+               });
+            }
+         } catch (e) {
+            console.error("Error serving static file:", e);
+            return c.text("File not found", 404);
+         }
+      }
+      await next();
+   };
+}

app/src/adapter/node/node.adapter.ts

@@ -32,8 +32,8 @@ export async function createApp<Env = NodeEnv>(
    registerLocalMediaAdapter();
    return await createRuntimeApp(
       {
-         ...config,
          serveStatic: serveStatic({ root }),
+         ...config,
       },
       // @ts-ignore
       args ?? { env: process.env },

app/src/media/storage/mime-types-tiny.ts

@@ -26,9 +26,11 @@ export const M = new Map<string, string>([
    ["eps", c.a("postscript")],
    ["epub", c.a("epub+zip")],
    ["ini", c.t()],
+   ["ico", c.i("vnd.microsoft.icon")],
    ["jar", c.a("java-archive")],
    ["jsonld", c.a("ld+json")],
    ["jpg", c.i("jpeg")],
+   ["js", c.t("javascript")],
    ["log", c.t()],
    ["m3u", c.t()],
    ["m3u8", c.a("vnd.apple.mpegurl")],