Android12LocalDate.kt

private val ddMMMMyyyyRegex = "([0-9]{1,2})\\s+([A-Za-z]{3,4})\\s+([0-9]{4})".toRegex()

private val monthMapping = mapOf(
    "Jan" to Month.JANUARY,
    ...
    "Sep" to Month.SEPTEMBER,
    "Sept" to Month.SEPTEMBER,
    ...
    "Dec" to Month.DECEMBER
)

fun String.toLocalDate(): LocalDate? {
    return ddMMMMyyyyRegex.matchEntire(this)?.groupValues?.let {
        val (_, day, month, year) = it
        LocalDate.of(year.toInt(), monthMapping[month], day.toInt())
    }
}