分配键时如何处理错误：object 中的值？

Question

Im using web API to create some aplication displaying data about countries and teritories. I have object with several properties for eg.

country {...
         currencies: Object.values(country.currencies)
         .map((currency) => currency.name)
         .join(", "),
          ...}

For countries having no such things like Antarctica ive got and error "Uncaught (in promise) TypeError: Cannot convert undefined or null to object at Function.values ()" and entire datail page not displaying. The question is how to handle this error, how to make exeption for those few countries having no currency. Maybe some "if" statement or alternative value for "currencies"?

Answer 1

Im downloading data from this API - "https://restcountries.com/v3.1/all", when im not using "Object.value", detailed page i create load but i got "currencies: [object Object]" entry for every single country.