feat: Introduce fe modular build system

fe-app-podkop/src/validators/validateUrl.ts

@@ -0,0 +1,20 @@
+import { ValidationResult } from './types.js';
+
+export function validateUrl(
+  url: string,
+  protocols: string[] = ['http:', 'https:'],
+): ValidationResult {
+  try {
+    const parsedUrl = new URL(url);
+
+    if (!protocols.includes(parsedUrl.protocol)) {
+      return {
+        valid: false,
+        message: `URL must use one of the following protocols: ${protocols.join(', ')}`,
+      };
+    }
+    return { valid: true, message: 'Valid' };
+  } catch (e) {
+    return { valid: false, message: 'Invalid URL format' };
+  }
+}