fix lazy

packages/babel-helper-module-transforms/src/index.ts

@@ -280,10 +280,27 @@ export function buildNamespaceInitStatements(
  );
  }
  if (sourceMetadata.reexportAll) {
+ let exportNameListName;
+ if (metadata.implicitAssignmentExports === undefined) {
+ // __esModule, default
+ if (metadata.exportNameList.length > 2) {
+ exportNameListName =
+ metadata.programPath.scope.generateUidIdentifier("exportNames");
+ statements.push(
+ variableDeclaration("var", [
+ variableDeclarator(
+ exportNameListName,
+ valueToNode(metadata.exportNameList),
+ ),
+ ]),
+ );
+ }
+ }
  const statement = buildNamespaceReexport(
  metadata,
  cloneNode(srcNamespace),
  constantReexports,
+ exportNameListName,
  buildExportStar,
  );
  statement.loc = sourceMetadata.reexportAll.loc;
@@ -404,25 +421,12 @@ function buildNamespaceReexport(
  metadata: ModuleMetadata,
  namespace: t.Expression,
  constantReexports: boolean,
+ exportNameListName?: t.Identifier,
  buildExportStar?: (body: t.Statement[]) => t.Statement,
 ) {
  const { programPath, exportNameList } = metadata;
 
  if (metadata.implicitAssignmentExports === undefined) {
- let exportNameListName;
- if (metadata.exportNameList.length > 2) {
- exportNameListName =
- programPath.scope.generateUidIdentifier("exportNames");
- programPath.unshiftContainer(
- "body",
- variableDeclaration("var", [
- variableDeclarator(
- exportNameListName,
- valueToNode(metadata.exportNameList),
- ),
- ]),
- );
- }
  return (
  constantReexports
  ? template.statement`
@@ -460,7 +464,7 @@ function buildNamespaceReexport(
  VERIFY_NAME_LIST: exportNameListName
  ? template`
  if (Object.prototype.hasOwnProperty.call(EXPORTS_LIST, key)) return;
- `({ EXPORTS_LIST: exportNameListName })
+ `({ EXPORTS_LIST: t.cloneNode(exportNameListName) })
  : null,
  });
  }

packages/babel-plugin-transform-modules-commonjs/test/fixtures/regression/lazy-exportNames/input.mjs

@@ -0,0 +1,3 @@
+export * from "foo";
+
+export var a;

packages/babel-plugin-transform-modules-commonjs/test/fixtures/regression/lazy-exportNames/options.json

@@ -0,0 +1,3 @@
+{
+ "plugins": [["transform-modules-commonjs", { "lazy": true }]]
+}

packages/babel-plugin-transform-modules-commonjs/test/fixtures/regression/lazy-exportNames/output.js

@@ -0,0 +1,20 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+ value: true
+});
+exports.a = void 0;
+var _foo = require("foo");
+var _exportNames = ["default", "__esModule", "a"];
+Object.keys(_foo).forEach(function (key) {
+ if (key === "default" || key === "__esModule") return;
+ if (Object.prototype.hasOwnProperty.call(_exportNames, key)) return;
+ if (key in exports && exports[key] === _foo[key]) return;
+ Object.defineProperty(exports, key, {
+ enumerable: true,
+ get: function () {
+ return _foo[key];
+ }
+ });
+});
+var a;