DateTimeFormatter equivalent

It is not included in the documentation so we would like to ask if Kotlinx Datetime has java.time.format.DateTimeFormatter equivalent for formatting?

Here are the following usage we had with the Java DateTimeFormatter

val formattedDate: String
        get() = LocalDate.parse(date, DateTimeFormatter.ISO_LOCAL_DATE_TIME).format(
            DateTimeFormatter.ofPattern("MMM. dd, yyyy")
        )

  val formattedTime: String = Instant.ofEpochMilli(time).atZone(ZoneId.systemDefault())
  .toLocalDate().format(DateTimeFormatter.ofPattern("MM-dd-yyyy"))

LocalDateTime.parse(
                  lowDate,
                  DateTimeFormatter.ofPattern("yyyy-MM-dd'T'HH:mm:ss'Z'")
              )

Currently using coreLibraryDesugaringEnabled for backward compatibility.

[SamCosta1]

My usecase was very limited (and only needing to support Android & iOS) so I ended up just going for this very simple util, posting here incase it helps someone.

In commonMain:

import kotlinx.datetime.LocalDateTime

expect fun LocalDateTime.format(format: String): String

androidMain:

import java.time.format.DateTimeFormatter

import kotlinx.datetime.LocalDateTime
import kotlinx.datetime.toJavaLocalDateTime

actual fun LocalDateTime.format(
    format: String
): String = DateTimeFormatter.ofPattern(format).format(this.toJavaLocalDateTime())

iosMain:

import platform.Foundation.NSCalendar
import platform.Foundation.NSDateFormatter

import kotlinx.datetime.LocalDateTime

actual fun LocalDateTime.format(format: String): String {
    val dateFormatter = NSDateFormatter()
    dateFormatter.dateFormat = format
    return dateFormatter.stringFromDate(
        toNSDate(NSCalendar.currentCalendar)
            ?: throw IllegalStateException("Could not convert kotlin date to NSDate $this")
    )
}

[dkhalanskyjb]

Sorry but does that mean it is not yet supported?

Yes.

Regarding the LocalDateTime.parse usage though, it closely resembles ISO-8601, so you can do that:

Instant.parse(lowDate).toLocalDateTime(TimeZone.UTC)