of

Receives a code and returns a string based on the locale and options provided when instantiating Intl.DisplayNames()

code

The code to provide depends on the type passed to display name during creation:

If the type is "region", code should be either an ISO-3166 two letters region code, or a three digits UN M49 Geographic Regions.
If the type is "script", code should be an ISO-15924 four letters script code.
If the type is "language", code should be a languageCode "-" `regionCode` *("-" variant ) subsequence of the unicode_language_id grammar in UTS 35's Unicode Language and Locale Identifiers grammar. languageCode is either a two letters ISO 639-1 language code or a three letters ISO 639-2 language code.
If the type is "currency", code should be a 3-letter ISO 4217 currency code.