initial commit

src/app/utils/error.utils.ts

@@ -0,0 +1,15 @@
+import { ApiError, ApiErrorItem } from '../services/api.service';
+
+export function getErrorMessage(err: ApiError, fallback: string): string {
+  const errors = err?.errors;
+  if (!errors) return fallback;
+
+  // Array format: [{ propertyName, errorMessage }]
+  if (Array.isArray(errors)) {
+    return errors[0]?.errorMessage ?? fallback;
+  }
+
+  // Dictionary format: { field: string[] }
+  const first = Object.values(errors).flat()[0];
+  return (typeof first === 'string' ? first : null) ?? fallback;
+}