The Intl.RelativeTimeFormat() constructor creates Intl.RelativeTimeFormat objects.

The Intl.ListFormat.supportedLocalesOf() static method returns an array containing those of the provided locales that are supported in list formatting without having to fall back to the runtime's default locale.

The Intl.RelativeTimeFormat.supportedLocalesOf() static method returns an array containing those of the provided locales that are supported in relative time formatting without having to fall back to the runtime's default locale.

The formatToParts() method of Intl.ListFormat instances returns an Array of objects representing the different components that can be used to format a list of values in a locale-aware fashion.

The resolvedOptions() method of Intl.ListFormat instances returns a new object with properties reflecting the locale and style formatting options computed during the construction of this Intl.ListFormat object.

The getNumberingSystems() method of Intl.Locale instances returns a list of one or more unique numbering system identifiers for this locale.

The Intl.PluralRules() constructor creates Intl.PluralRules objects.

The Intl.PluralRules.supportedLocalesOf() static method returns an array containing those of the provided locales that are supported in plural rules without having to fall back to the runtime's default locale.

The caseFirst accessor property of Intl.Locale instances returns whether case is taken into account for this locale's collation rules.

The resolvedOptions() method of Intl.NumberFormat instances returns a new object with properties reflecting the locale and number formatting options computed during initialization of this Intl.NumberFormat object.