Profile redesign: Fields iteration (#37682)

app/javascript/mastodon/utils/checks.ts

@@ -0,0 +1,11 @@
+export function isValidUrl(
+  url: string,
+  allowedProtocols = ['https:'],
+): boolean {
+  try {
+    const parsedUrl = new URL(url);
+    return allowedProtocols.includes(parsedUrl.protocol);
+  } catch {
+    return false;
+  }
+}