Missing DateTimeFormatter.ofLocalizedDateTime

[OndrejSpanel]

When porting some JVM code to JS I was hit by a method DateTimeFormatter.ofLocalizedDateTime not implemented. Would it be possible to add it?

What alternatives does one have without it to get locale dependent long or short time formats?

[OndrejSpanel]

I understand now this is a known limitation:

No Locale support.

My current workaround is using js.Date and Intl functionality:

  implicit class ZonedDateTimeOps(t: ZonedDateTime) {
    def toJSDate: js.Date = {
      val text = t.toString // (DateTimeFormatter.ISO_ZONED_DATE_TIME)
      new js.Date(js.Date.parse(text))
    }
  }

  def locale: String = {
    import org.scalajs.dom
    val firstLanguage = dom.window.navigator.asInstanceOf[js.Dynamic].languages.asInstanceOf[js.Array[String]].headOption
    firstLanguage.getOrElse(dom.window.navigator.language)
  }

  def formatDateTime(t: js.Date): String = {
    new intl.DateTimeFormat(
      locale,
      intl.DateTimeFormatOptions(
        year = "numeric",
        month = "numeric",
        day = "numeric",
        hour = "numeric",
        minute = "numeric"
      )
    ).format(t)
  }
  }

Used as:

  val x: ZonedDateTime = ???
  formatDateTime(x.toJSDate)