Resolve "Protocol Parsing: BIP21/PayPro, bch-mnemonic, etc"

packages/stack/src/utils/misc.ts

@@ -15,3 +15,27 @@ export function getOutpointId(outpoint: {
 export function generateActivityId() {
   return Date.now().toString();
 }
+
+/**
+ * Checks if a URL has duplicate parameters.
+ *
+ * @param url - The URL to check
+ * @returns True if the URL has duplicate parameters, false otherwise
+ */
+export function hasDuplicateParams(url: string | URL): boolean {
+  if (typeof url === 'string') {
+    url = new URL(url);
+  }
+
+  const params = url.searchParams;
+  const seen = new Set<string>();
+
+  for (const [key] of params.entries()) {
+    if (seen.has(key)) {
+      return true;
+    }
+    seen.add(key);
+  }
+
+  return false;
+}