From 4f0d1301ab48e62afb3424609834c6353a0a5eee Mon Sep 17 00:00:00 2001
From: Raymond Hill <rhill@raymondhill.net>
Date: Sat, 3 Aug 2024 20:09:21 -0400
Subject: [PATCH] Improve `trusted-replace-node-text` scriptlet

Related discussion:
https://github.com/brave/adblock-resources/pull/194
---
 assets/resources/scriptlets.js | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/assets/resources/scriptlets.js b/assets/resources/scriptlets.js
index 6e9dcd60ea4b8..c95412867332b 100644
--- a/assets/resources/scriptlets.js
+++ b/assets/resources/scriptlets.js
@@ -730,6 +730,18 @@ function replaceNodeTextFn(
             safe.uboLog(logPrefix, 'Quitting');
         }
     };
+    const textContentFactory = (( ) => {
+        const out = { createScript: s => s };
+        const { trustedTypes: tt } = self;
+        if ( tt instanceof Object ) {
+            if ( typeof tt.getPropertyType === 'function' ) {
+                if ( tt.getPropertyType('script', 'textContent') === 'TrustedScript' ) {
+                    return tt.createPolicy('uBO', out);
+                }
+            }
+        }
+        return out;
+    })();
     let sedCount = extraArgs.sedCount || 0;
     const handleNode = node => {
         const before = node.textContent;
@@ -747,7 +759,9 @@ function replaceNodeTextFn(
         const after = pattern !== ''
             ? before.replace(rePattern, replacement)
             : replacement;
-        node.textContent = after;
+        node.textContent = node.nodeName === 'SCRIPT'
+            ? textContentFactory.createScript(after)
+            : after;
         if ( safe.logLevel > 1 ) {
             safe.uboLog(logPrefix, `Text before:\n${before.trim()}`);
         }