From 392ee16aaa383c402d2091c05f2b9cc2f175ea0e Mon Sep 17 00:00:00 2001
From: Ryan Ashcraft <ryan@amplitude.com>
Date: Mon, 10 Jun 2019 08:52:52 -0700
Subject: [PATCH] Only set babel node target for test env

---
 babel.config.js | 30 +++++++++++++++++++-----------
 1 file changed, 19 insertions(+), 11 deletions(-)

diff --git a/babel.config.js b/babel.config.js
index 323dd570..876daeea 100644
--- a/babel.config.js
+++ b/babel.config.js
@@ -2,17 +2,25 @@
 
 'use strict';
 
+// NOTE(ryan): Set node target to current for @babel/preset-env to avoid errors when running jest
+// `async` test functions ("ReferenceError: regeneratorRuntime is not defined").
+// https://github.com/facebook/jest/issues/3126#issuecomment-483320742
+
 module.exports = {
-  presets: [
-    '@babel/preset-react',
-    [
-      '@babel/preset-env',
-      {
-        targets: {
-          node: 'current',
-        },
-      },
-    ],
-  ],
+  presets: ['@babel/preset-react', '@babel/preset-env'],
   plugins: ['@babel/plugin-proposal-object-rest-spread'],
+  env: {
+    test: {
+      presets: [
+        [
+          '@babel/preset-env',
+          {
+            targets: {
+              node: 'current',
+            },
+          },
+        ],
+      ],
+    },
+  },
 };