🐛 (dify) Fix Dify error when inputs are empty

packages/lib/validators/isURL.ts

@@ -0,0 +1,10 @@
+import isURL, { IsURLOptions } from 'validator/lib/isURL'
+
+const customIsURL = (val: string, options?: IsURLOptions) =>
+  isURL(val, {
+    protocols: ['https', 'http'],
+    require_protocol: true,
+    ...options,
+  })
+
+export { customIsURL as isURL }