Medium articles - What's Native

Platform.kt

import kotlinx.cinterop.convert
import kotlinx.datetime.LocalDate
import platform.Foundation.NSCalendar
import platform.Foundation.NSDate
import platform.Foundation.NSDateComponents
import platform.Foundation.NSDateFormatter
import platform.Foundation.NSLocale
import platform.Foundation.currentLocale

//iosMain
internal actual class Platform actual constructor() {

    actual fun formatDateTimeWithLocale(date: LocalDate, pattern: String): String {
        return NSDateFormatter()
            .apply {
                dateFormat = pattern
                locale = NSLocale.currentLocale
            }
            .stringFromDate(date.toNsDate() ?: throw IllegalStateException("Failed to convert LocalDate $date to NSDate"))
    }

    private fun LocalDate.toNsDate(): NSDate? {
        val components = NSDateComponents()
        components.year = this.year.convert()
        components.month = this.monthNumber.convert()
        components.day = this.dayOfMonth.convert()
        return NSCalendar.currentCalendar.dateFromComponents(components)
    }
}