fix: use decoded asset id to access prerendered asset header overrides

src/rollup/plugins/public-assets.ts

@@ -40,7 +40,7 @@ export function publicAssets(nitro: Nitro): Plugin {
           }
 
           assets[assetId] = {
-            type: nitro._prerenderMeta?.[id]?.contentType || mimeType,
+            type: nitro._prerenderMeta?.[assetId]?.contentType || mimeType,
             encoding,
             etag,
             mtime: stat.mtime.toJSON(),

test/fixture/api/param/[id].ts

@@ -1,3 +1,4 @@
 export default eventHandler((event) => {
+  setHeader(event, "Content-Type", "text/plain; charset=utf-16");
   return event.context.params!.id;
 });

test/presets/cloudflare-pages.test.ts

@@ -51,11 +51,11 @@ describe("nitro:preset:cloudflare-pages", async () => {
           "/prerender/index.html.br",
           "/prerender/index.html.gz",
           "/api/hey/index.html",
-          "/api/param/foo.json/index.html",
-          "/api/param/hidden/index.html",
-          "/api/param/prerender1/index.html",
-          "/api/param/prerender3/index.html",
-          "/api/param/prerender4/index.html",
+          "/api/param/foo.json",
+          "/api/param/hidden",
+          "/api/param/prerender1",
+          "/api/param/prerender3",
+          "/api/param/prerender4",
         ],
         "include": [
           "/*",

test/presets/vercel.test.ts

@@ -28,21 +28,6 @@ describe("nitro:preset:vercel", async () => {
               "api/hey/index.html": {
                 "path": "api/hey",
               },
-              "api/param/foo.json/index.html": {
-                "path": "api/param/foo.json",
-              },
-              "api/param/hidden/index.html": {
-                "path": "api/param/hidden",
-              },
-              "api/param/prerender1/index.html": {
-                "path": "api/param/prerender1",
-              },
-              "api/param/prerender3/index.html": {
-                "path": "api/param/prerender3",
-              },
-              "api/param/prerender4/index.html": {
-                "path": "api/param/prerender4",
-              },
               "prerender/index.html": {
                 "path": "prerender",
               },

test/tests.ts

@@ -320,6 +320,14 @@ export function testNitro(
       `);
     });
 
+    it("stores content-type for prerendered routes", async () => {
+      const { data, headers } = await callHandler({
+        url: "/api/param/prerender4",
+      });
+      expect(data).toBe("prerender4");
+      expect(headers["content-type"]).toBe("text/plain; charset=utf-16");
+    });
+
     it.skipIf(ctx.preset === "deno-server")(
       "resolve module version conflicts",
       async () => {