in src/objects/serverside/utils.js [140:150]
static normalizeDeliveryCategory(input: string) {
let delivery_category = input.trim().toLowerCase();
if(!(Object.values(DeliveryCategory).includes(delivery_category))){
throw new Error("Invalid delivery_category passed: " + input +
". Allowed values are one of " + (Object.values(DeliveryCategory)).join(','));
}
return delivery_category;
}