From a4ac9de0f69e93fb131562ffdad5e3ad0b858041 Mon Sep 17 00:00:00 2001
From: Ryan Manuel <ryanm@cypress.io>
Date: Mon, 16 Sep 2024 16:09:04 -0500
Subject: [PATCH] fix: ensure that projects without optional chainer support
 can use @cypress/code-coverage (#881)

---
 support.js | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/support.js b/support.js
index 384adafc..d6f427b6 100644
--- a/support.js
+++ b/support.js
@@ -71,8 +71,15 @@ const registerHooks = () => {
       // because we don't control the cross-origin code, we can safely return
       let applicationSourceCoverage
       try {
-        applicationSourceCoverage = win?.__coverage__
+        // Note that we are purposefully not supporting the optional chaining syntax here to
+        // support a wide range of projects (some of which are not set up to support the optional
+        // chaining syntax due to current Cypress limitations). See:
+        // https://github.com/cypress-io/cypress/issues/20753
+        if (win) {
+          applicationSourceCoverage = win.__coverage__
+        }
       } catch {}
+
       if (!applicationSourceCoverage) {
         return
       }