From 405b8fdbc3f376ef6603723feacfc3faeb544da1 Mon Sep 17 00:00:00 2001
From: Johannes <johannes.rieken@gmail.com>
Date: Tue, 12 Jul 2022 15:18:19 +0200
Subject: [PATCH] add `vscode-coi` query when loading webview contents

related to https://github.com/microsoft/vscode/issues/137884
---
 src/vs/workbench/contrib/webview/browser/webviewElement.ts | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/vs/workbench/contrib/webview/browser/webviewElement.ts b/src/vs/workbench/contrib/webview/browser/webviewElement.ts
index 77aaf6683f9..092d2f13707 100644
--- a/src/vs/workbench/contrib/webview/browser/webviewElement.ts
+++ b/src/vs/workbench/contrib/webview/browser/webviewElement.ts
@@ -508,6 +508,10 @@ export class WebviewElement extends Disposable implements IWebview, WebviewFindD
 			params.purpose = options.purpose;
 		}
 
+		if (globalThis.crossOriginIsolated) {
+			params['vscode-coi'] = '3'; /*COOP+COEP*/
+		}
+
 		const queryString = new URLSearchParams(params).toString();
 
 		// Workaround for https://bugzilla.mozilla.org/show_bug.cgi?id=1754872