diff --git a/src/core/build/generateTypesDir.ts b/src/core/build/generateTypesDir.ts
index 5e82d077..98c5a72e 100644
--- a/src/core/build/generateTypesDir.ts
+++ b/src/core/build/generateTypesDir.ts
@@ -48,22 +48,23 @@ async function writePathsDeclarationFile(
   config: InternalConfig,
 ): Promise<string> {
   const filePath = resolve(config.typesDir, 'paths.d.ts');
+  const unions = entrypoints
+    .map((entry) => {
+      const path = getEntrypointBundlePath(
+        entry,
+        config.outDir,
+        entry.inputPath.endsWith('.html') ? '.html' : '.js',
+      );
+      return `  | "/${path}"`;
+    })
+    .sort();
 
   await fs.writeFile(
     filePath,
     [
       '// Generated by wxt',
       'type EntrypointPath =',
-      ...entrypoints
-        .map((entry) => {
-          const path = getEntrypointBundlePath(
-            entry,
-            config.outDir,
-            entry.inputPath.endsWith('.html') ? '.html' : '.js',
-          );
-          return `  | "/${path}"`;
-        })
-        .sort(),
+      ...(unions.length === 0 ? ['  never'] : unions),
     ].join('\n') + '\n',
   );