chore: more readable validation error

Author: NamesMT

apps/backend/src/helpers/arktype.ts

@@ -4,7 +4,12 @@ import { validator as arktypeValidator } from 'hono-openapi'
 type arktypeValidatorArguments = Parameters<typeof arktypeValidator>
 export function customArktypeValidator<Target extends arktypeValidatorArguments[0], Schema extends arktypeValidatorArguments[1]>(target: Target, schema: Schema) {
   return arktypeValidator(target, schema, (result) => {
-    if (result.success === false)
-      throw new DetailedError('Validation failed', { statusCode: 400, detail: JSON.stringify(result.error) })
+    if (result.success === false) {
+      throw new DetailedError('Validation failed', {
+        statusCode: 400,
+        // Normalizes ArkErrors
+        detail: JSON.parse(JSON.stringify(result.error)),
+      })
+    }
   })
 }