Better unicode un-escaping

package-lock.json

@@ -14044,7 +14044,7 @@
         "postcss": "^8.4.45",
         "postcss-nesting": "^13.0.0",
         "tailwindcss": "^3.4.10",
-        "vite": "6.2.6",
+        "vite": "6.2.7",
         "vite-plugin-static-copy": "^2.2.0",
         "vite-plugin-svgr": "^4.3.0",
         "vite-plugin-top-level-await": "^1.5.0",
@@ -14584,9 +14584,9 @@
       }
     },
     "src-web/node_modules/vite": {
-      "version": "6.2.6",
-      "resolved": "https://registry.npmjs.org/vite/-/vite-6.2.6.tgz",
-      "integrity": "sha512-9xpjNl3kR4rVDZgPNdTL0/c6ao4km69a/2ihNQbcANz8RuCOK3hQBmLSJf3bRKVQjVMda+YvizNE8AwvogcPbw==",
+      "version": "6.2.7",
+      "resolved": "https://registry.npmjs.org/vite/-/vite-6.2.7.tgz",
+      "integrity": "sha512-qg3LkeuinTrZoJHHF94coSaTfIPyBYoywp+ys4qu20oSJFbKMYoIJo0FWJT9q6Vp49l6z9IsJRbHdcGtiKbGoQ==",
       "dev": true,
       "license": "MIT",
       "dependencies": {

src-web/components/responseViewers/TextViewer.tsx

@@ -116,14 +116,16 @@ export function TextViewer({ language, text, responseId, requestId, pretty, clas
     body = formattedBody.data;
   }
 
-  // Decode unicode sequences in the text to readable characters  
-  const decodedBodyText = unescape(body.replace(/\\u/g, '%u')) || body;
+  // Decode unicode sequences in the text to readable characters
+  if (pretty) {
+    body = decodeUnicodeLiterals(body);
+  }
 
   return (
     <Editor
       readOnly
       className={className}
-      defaultValue={decodedBodyText}
+      defaultValue={body}
       language={language}
       actions={actions}
       extraExtensions={extraExtensions}
@@ -132,3 +134,11 @@ export function TextViewer({ language, text, responseId, requestId, pretty, clas
   );
 }
 
+/** Convert \uXXXX to actual Unicode characters */
+function decodeUnicodeLiterals(text: string): string {
+  const decoded = text.replace(/\\u([0-9a-fA-F]{4})/g, (_, hex) => {
+    const charCode = parseInt(hex, 16);
+    return String.fromCharCode(charCode);
+  });
+  return decoded;
+}