fix(build): sort pageToHashMap to ensure stable assets

closes #4016

src/node/build/bundle.ts

@@ -43,7 +43,7 @@ export async function bundle(
   serverResult: Rollup.RollupOutput
   pageToHashMap: Record<string, string>
 }> {
-  const pageToHashMap = Object.create(null)
+  const pageToHashMap = Object.create(null) as Record<string, string>
   const clientJSMap = Object.create(null)
 
   // define custom rollup input
@@ -202,7 +202,15 @@ export async function bundle(
     }
   }
 
-  return { clientResult, serverResult, pageToHashMap }
+  // sort pageToHashMap to ensure stable output
+  const sortedPageToHashMap = Object.create(null) as Record<string, string>
+  Object.keys(pageToHashMap)
+    .sort()
+    .forEach((key) => {
+      sortedPageToHashMap[key] = pageToHashMap[key]
+    })
+
+  return { clientResult, serverResult, pageToHashMap: sortedPageToHashMap }
 }
 
 const cache = new Map<string, boolean>()