deploy

server/src/lib/delivery-carrier.js

@@ -0,0 +1,9 @@
+export const DELIVERY_CARRIERS = ['RUSSIAN_POST', 'OZON_PVZ', 'YANDEX_PVZ', 'FIVE_POST']
+
+/**
+ * @param {unknown} value
+ * @returns {value is typeof DELIVERY_CARRIERS[number]}
+ */
+export function isDeliveryCarrier(value) {
+  return typeof value === 'string' && DELIVERY_CARRIERS.includes(value)
+}