feat: 50% almost code coverage

lib/utils/stringifyISODate.ts

@@ -1,3 +1,8 @@
 export const stringifyISODate = (date: Date|undefined): string => {
   return `${date?.toISOString()}`
+}
+
+export const autoStringifyDateValues = ([key, value]: [string, unknown]): [string, unknown] => { 
+  console.log(key,value)
+  return [key, typeof value === "object" && value instanceof Date ? stringifyISODate(value) : value]
 }