Don't load response when blocking large responses

src-web/lib/contentType.ts

@@ -1,3 +1,4 @@
+import MimeType from 'whatwg-mimetype';
 import type { EditorProps } from '../components/core/Editor/Editor';
 
 export function languageFromContentType(
@@ -40,10 +41,39 @@ export function isJSON(content: string | null | undefined): boolean {
   if (typeof content !== 'string') return false;
 
   try {
-    JSON.parse(content)
+    JSON.parse(content);
     return true;
     // eslint-disable-next-line @typescript-eslint/no-unused-vars
   } catch (err) {
     return false;
   }
 }
+
+export function isProbablyTextContentType(contentType: string | null): boolean {
+  if (contentType == null) return false;
+
+  const mimeType = getMimeTypeFromContentType(contentType).essence;
+  const normalized = mimeType.toLowerCase();
+
+  // Check if it starts with "text/"
+  if (normalized.startsWith('text/')) {
+    return true;
+  }
+
+  // Common text mimetypes and suffixes
+  return [
+    'application/json',
+    'application/xml',
+    'application/javascript',
+    'application/yaml',
+    '+json',
+    '+xml',
+    '+yaml',
+    '+text',
+  ].some((textType) => normalized === textType || normalized.endsWith(textType));
+}
+
+export function getMimeTypeFromContentType(contentType: string) {
+  const mimeType = new MimeType(contentType);
+  return mimeType;
+}