Result

sealed interface Result<out T, out E>

inline fun <T, E, R> Result<T, E>.flatMap(transform: (T) -> Result<R, E>): Result<R, E>

inline fun <T, E> Result<T, E>.fold(onSuccess: (T) -> Unit, onFailure: (E) -> Unit)

fun <T, E> Result<T, E>.getOrNull(): T?

fun <T, E> Result<T, E>.getOrThrow(): T

inline fun <T, E, R> Result<T, E>.map(transform: (T) -> R): Result<R, E>

inline fun <T, E, F> Result<T, E>.mapError(transform: (E) -> F): Result<T, F>