From 7bf67ba2f6d6839f9769ebac23a10860ff110765 Mon Sep 17 00:00:00 2001
From: "opensearch-trigger-bot[bot]"
 <98922864+opensearch-trigger-bot[bot]@users.noreply.github.com>
Date: Fri, 11 Aug 2023 13:45:30 +0800
Subject: [PATCH] Fix `exports is undefined` (#826) (#841)

* Add allowTopLevelThis=true option for @babel/plugin-transform-modules-commonjs

* remove override babel.config.js for build

---------

(cherry picked from commit be25b8bd3b1c77865e1414aad215e645bc161711)

Signed-off-by: Hailong Cui <ihailong@amazon.com>
Signed-off-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
(cherry picked from commit 639df0d996cbf0c2546ff3bf1e78122c5ede60e0)
---
 babel.config.js | 21 ++++++++++++++-------
 1 file changed, 14 insertions(+), 7 deletions(-)

diff --git a/babel.config.js b/babel.config.js
index 21b7ac48c..1d9ebbecf 100644
--- a/babel.config.js
+++ b/babel.config.js
@@ -5,11 +5,18 @@
 
 // babelrc doesn't respect NODE_PATH anymore but using require does.
 // Alternative to install them locally in node_modules
-module.exports = {
-  presets: [require("@babel/preset-env"), require("@babel/preset-react"), require("@babel/preset-typescript")],
-  plugins: [
-    [require("@babel/plugin-transform-runtime"), { regenerator: true }],
-    require("@babel/plugin-proposal-class-properties"),
-    require("@babel/plugin-proposal-object-rest-spread"),
-  ],
+module.exports = function (api) {
+  // ensure env is test so that this config won't impact build or dev server
+  if (api.env("test")) {
+    return {
+      presets: [require("@babel/preset-env"), require("@babel/preset-react"), require("@babel/preset-typescript")],
+      plugins: [
+        [require("@babel/plugin-transform-runtime"), { regenerator: true }],
+        require("@babel/plugin-proposal-class-properties"),
+        require("@babel/plugin-proposal-object-rest-spread"),
+        [require("@babel/plugin-transform-modules-commonjs"), { allowTopLevelThis: true }],
+      ],
+    };
+  }
+  return {};
 };