[systemjs] Fix: export star alongside with named export (#12612)

packages/babel-plugin-transform-modules-systemjs/src/index.js

@@ -74,6 +74,7 @@ function constructExportCall(
   stringSpecifiers: Set<string>,
 ) {
   const statements = [];
+  if (!exportStarTarget) {
     if (exportNames.length === 1) {
       statements.push(
         t.expressionStatement(
@@ -83,7 +84,7 @@ function constructExportCall(
           ]),
         ),
       );
-  } else if (!exportStarTarget) {
+    } else {
       const objectProperties = [];
       for (let i = 0; i < exportNames.length; i++) {
         const exportName = exportNames[i];
@@ -102,6 +103,7 @@ function constructExportCall(
           t.callExpression(exportIdent, [t.objectExpression(objectProperties)]),
         ),
       );
+    }
   } else {
     const exportObj = path.scope.generateUid("exportObj");
 

packages/babel-plugin-transform-modules-systemjs/test/fixtures/systemjs/export-named-alongside-with-export-star/input.mjs

@@ -0,0 +1,5 @@
+export { default } from 'foo';
+export * from 'foo';
+
+export { a, b } from 'bar';
+export * from 'bar';

packages/babel-plugin-transform-modules-systemjs/test/fixtures/systemjs/export-named-alongside-with-export-star/output.mjs

@@ -0,0 +1,29 @@
+System.register(["foo", "bar"], function (_export, _context) {
+  "use strict";
+
+  return {
+    setters: [function (_foo) {
+      var _exportObj = {};
+
+      for (var _key in _foo) {
+        if (_key !== "default" && _key !== "__esModule") _exportObj[_key] = _foo[_key];
+      }
+
+      _exportObj.default = _foo.default;
+
+      _export(_exportObj);
+    }, function (_bar) {
+      var _exportObj2 = {};
+
+      for (var _key2 in _bar) {
+        if (_key2 !== "default" && _key2 !== "__esModule") _exportObj2[_key2] = _bar[_key2];
+      }
+
+      _exportObj2.a = _bar.a;
+      _exportObj2.b = _bar.b;
+
+      _export(_exportObj2);
+    }],
+    execute: function () {}
+  };
+});