The next() method of AsyncGenerator instances returns the next value in the sequence.

The difference() method of Set instances takes a set and returns a new set containing elements in this set but not in the given set.

The union() method of Set instances takes a set and returns a new set containing elements which are in either or both of this set and the given set.

The [Symbol.asyncIterator]() method of AsyncIterator instances implements the async iterable protocol and allows built-in async iterators to be consumed by most syntaxes expecting async iterables, such as for await...of loops. It returns the value of this, which is the async iterator object itself.

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

The format() method of Intl.RelativeTimeFormat instances formats a value and unit according to the locale and formatting options of this Intl.RelativeTimeFormat object.

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

The getHourCycles() method of Intl.Locale instances returns a list of one or more unique hour cycle identifiers for this locale.

The numeric accessor property of Intl.Locale instances returns whether this locale has special collation handling for numeric characters.

The selectRange() method of Intl.PluralRules instances receives two values and returns a string indicating which plural rule to use for locale-aware formatting of the indicated range.