Misc fixes

front/src/utils/is-url.ts

@@ -1,10 +1,14 @@
 import { isDefined } from './isDefined';
 
 export function isURL(url: string | undefined | null) {
-  return (
-    isDefined(url) &&
-    /^((?!-))(xn--)?[a-z0-9][a-z0-9-_]{0,61}[a-z0-9]{0,1}\.(xn--)?([a-z0-9-]{1,61}|[a-z0-9-]{1,30}\.[a-z]{2,})$/.test(
-      url,
-    )
+  const pattern = new RegExp(
+    '^(https?:\\/\\/)?' +
+      '((([a-z\\d]([a-z\\d-]*[a-z\\d])*)\\.)+[a-z]{2,}|' +
+      '((\\d{1,3}\\.){3}\\d{1,3}))' +
+      '(\\:\\d+)?(\\/[-a-z\\d%_.~+]*)*' +
+      '(\\?[;&a-z\\d%_.~+=-]*)?' +
+      '(\\#[-a-z\\d_]*)?$',
+    'i',
   );
+  return isDefined(url) && !!pattern.test(url);
 }