diff --git a/packager/src/ModuleGraph/output/as-plain-bundle.js b/packager/src/ModuleGraph/output/as-plain-bundle.js
index 601cf5562..dd403e852 100644
--- a/packager/src/ModuleGraph/output/as-plain-bundle.js
+++ b/packager/src/ModuleGraph/output/as-plain-bundle.js
@@ -10,6 +10,8 @@
  */
 'use strict';
 
+const meta = require('../../../../local-cli/bundle/output/meta');
+
 const {createIndexMap} = require('./source-map');
 const {addModuleIdsToModuleWrapper} = require('./util');
 
@@ -41,7 +43,11 @@ module.exports = (
       code += `/*# sourceMappingURL=${sourceMapPath}*/`;
     }
 
-    return {code, map: createIndexMap({file: filename, sections})};
+    return {
+      code,
+      extraFiles: [[`${filename}.meta`, meta(code)]],
+      map: createIndexMap({file: filename, sections}),
+    };
   }: OutputFn);
 
 const reLine = /^/gm;
diff --git a/packager/src/ModuleGraph/types.flow.js b/packager/src/ModuleGraph/types.flow.js
index a7a3cb782..ed70ff68d 100644
--- a/packager/src/ModuleGraph/types.flow.js
+++ b/packager/src/ModuleGraph/types.flow.js
@@ -78,7 +78,8 @@ export type OutputFn = (
 ) => OutputResult;
 
 type OutputResult = {|
-  code: string,
+  code: string | Buffer,
+  extraFiles: Iterable<[string, string | Buffer]>,
   map: SourceMap,
 |};