set response content type

src/pages/api/posts.ts

@@ -3,5 +3,7 @@ import { getAllPostsForSearch } from '@lib/astro'
 
 export const GET: APIRoute = async () => {
   const allPosts = await getAllPostsForSearch()
-  return new Response(JSON.stringify(allPosts))
+  return new Response(JSON.stringify(allPosts), {
+    headers: { 'content-type': 'application/json' }
+  })
 }

src/pages/feed.json.ts

@@ -45,6 +45,9 @@ export async function GET(context: AstroConfig) {
         }
       ],
       items
-    })
+    }),
+    {
+      headers: { 'content-type': 'application/json' }
+    }
   )
 }

src/pages/manifest.json.ts

@@ -33,5 +33,7 @@ export const GET: APIRoute = async () => {
     icons
   }
 
-  return new Response(JSON.stringify(manifest))
+  return new Response(JSON.stringify(manifest), {
+    headers: { 'content-type': 'application/json' }
+  })
 }