From 6f7e41d5772e86d9d3e9a7cd1b76cb2c1b560cd5 Mon Sep 17 00:00:00 2001
From: Simon Knott <info@simonknott.de>
Date: Wed, 20 Nov 2024 15:35:15 +0100
Subject: [PATCH] chore(html): hmr report should survive reload

---
 packages/html-reporter/src/index.tsx | 16 ++++++++++++++--
 1 file changed, 14 insertions(+), 2 deletions(-)

diff --git a/packages/html-reporter/src/index.tsx b/packages/html-reporter/src/index.tsx
index 0c3f0a6dc0..149b3478ef 100644
--- a/packages/html-reporter/src/index.tsx
+++ b/packages/html-reporter/src/index.tsx
@@ -58,8 +58,20 @@ class ZipReport implements LoadedReport {
     const zipURI = await new Promise<string>(resolve => {
       if (window.playwrightReportBase64)
         return resolve(window.playwrightReportBase64);
-      window.addEventListener('message', event => event.source === window.opener && resolve(event.data), { once: true });
-      window.opener.postMessage('ready', '*');
+      if (window.opener) {
+        window.addEventListener('message', event => {
+          if (event.source === window.opener) {
+            localStorage.setItem('playwrightReportBase64', event.data);
+            resolve(event.data);
+          }
+        }, { once: true });
+        window.opener.postMessage('ready', '*');
+      } else {
+        const oldReport = localStorage.getItem('playwrightReportBase64');
+        if (oldReport)
+          return resolve(oldReport);
+        alert('couldnt find report, something with HMR is broken');
+      }
     });
 
     const zipReader = new zipjs.ZipReader(new zipjs.Data64URIReader(zipURI), { useWebWorkers: false });