From bbefa309039eae38fc221601e539ac838f6f0890 Mon Sep 17 00:00:00 2001
From: vcheung-stripe <71457708+vcheung-stripe@users.noreply.github.com>
Date: Wed, 14 Oct 2020 07:00:28 -0700
Subject: [PATCH] Do not mutate user-supplied opts (#1041)

---
 lib/utils.js             |  2 +-
 test/makeRequest.spec.js | 29 +++++++++++++++++++++++++++++
 2 files changed, 30 insertions(+), 1 deletion(-)
 create mode 100644 test/makeRequest.spec.js

diff --git a/lib/utils.js b/lib/utils.js
index 16c9f95be6..5bca895adf 100644
--- a/lib/utils.js
+++ b/lib/utils.js
@@ -149,7 +149,7 @@ const utils = (module.exports = {
       if (typeof arg === 'string') {
         opts.auth = args.pop();
       } else if (utils.isOptionsHash(arg)) {
-        const params = args.pop();
+        const params = {...args.pop()};
 
         const extraKeys = Object.keys(params).filter(
           (key) => !OPTIONS_KEYS.includes(key)
diff --git a/test/makeRequest.spec.js b/test/makeRequest.spec.js
new file mode 100644
index 0000000000..93fe5e67f1
--- /dev/null
+++ b/test/makeRequest.spec.js
@@ -0,0 +1,29 @@
+'use strict';
+
+require('../testUtils');
+
+const makeRequest = require('../lib/makeRequest');
+const expect = require('chai').expect;
+
+describe('makeRequest', () => {
+  describe('args', () => {
+    it('does not mutate user-supplied deprecated opts', () => {
+      const args = [
+        {
+          stripe_account: 'bad',
+        },
+      ];
+      const mockSelf = {
+        createResourcePathWithSymbols: () => {},
+        createFullPath: () => {},
+        _request: () => {},
+      };
+      makeRequest(mockSelf, args, {}, {});
+      expect(args).to.deep.equal([
+        {
+          stripe_account: 'bad',
+        },
+      ]);
+    });
+  });
+});