Intl.DateTimeFormat timeZone option

[binkztep]

why it is not supported? it would allow to display timezone in specific timezone

list of allowed options:

fluent.js/fluent-bundle/src/builtins.ts

Line 99 in 36a895b

const DATETIME_ALLOWED = [

more than that, in Syntax guide its named as "Developers params", which intuitively feels like it should be supported https://projectfluent.org/fluent/guide/functions.html#partial-arguments

[eemeli]

To set timeZone, you need to use a partially formatted FluentDateTime variable, and to set the option in its constructor. This is intentionally not possible via the DATETIME() message function as it could far too easily lead to mistakes. For the same reason, e.g. the currency option of FluentNumber needs to be set via a partially formatter variable.

[rkh]

In the future, it would be nice if Temporal.ZonedDateTime would be supported, see #634.