fix: abort controller fallback

Author: Birowsky

index.ts

@@ -404,7 +404,7 @@ export async function getLinkPreview(
   }
 
   const timeout = options?.timeout ?? 3000; // 3 second timeout default
-  const controller = new (AbortController || AbortControllerPolyfill)();
+  const controller = createAbortController();
   const timeoutCounter = setTimeout(() => controller.abort(), timeout);
 
   const fetchOptions = {
@@ -488,3 +488,10 @@ export async function getPreviewFromContent(
 
   return parseResponse(response, options);
 }
+
+
+function createAbortController(): AbortController | AbortControllerPolyfill {
+  return typeof AbortController == 'undefined'
+    ? new AbortControllerPolyfill()
+    : new AbortController();
+}