diff --git a/src/language-js/parser-babylon.js b/src/language-js/parser-babylon.js
index 08b736bd..a994ab15 100644
--- a/src/language-js/parser-babylon.js
+++ b/src/language-js/parser-babylon.js
@@ -16,6 +16,7 @@ function babelOptions(extraOptions, extraPlugins) {
       allowImportExportEverywhere: true,
       allowReturnOutsideFunction: true,
       allowSuperOutsideMethod: true,
+      allowUndeclaredExports: true,
       plugins: [
         "jsx",
         "doExpressions",
diff --git a/tests/exports/__snapshots__/jsfmt.spec.js.snap b/tests/exports/__snapshots__/jsfmt.spec.js.snap
index e7115ba9..8f1bf638 100644
--- a/tests/exports/__snapshots__/jsfmt.spec.js.snap
+++ b/tests/exports/__snapshots__/jsfmt.spec.js.snap
@@ -14,6 +14,8 @@ export * as ns from "mod";
 
 export * as foo,{bar} from "./baz";
 
+export { undefinedExport };
+
 =====================================output=====================================
 export {
   value1,
@@ -29,5 +31,7 @@ export * as ns from "mod";
 
 export * as foo, { bar } from "./baz";
 
+export { undefinedExport };
+
 ================================================================================
 `;
diff --git a/tests/exports/test.js b/tests/exports/test.js
index 635d17bf..af917844 100644
--- a/tests/exports/test.js
+++ b/tests/exports/test.js
@@ -5,3 +5,5 @@ export a,{b} from "./baz";
 export * as ns from "mod";
 
 export * as foo,{bar} from "./baz";
+
+export { undefinedExport };