traverseNullable

inline fun <C> traverseNullable(fa: (B) -> C?): Either<A, C>?

Deprecated

This API is considered redundant. If this method is crucial for you, please let us know on the Arrow Github. Thanks! https://github.com/arrow-kt/arrow/issues Use orNull() and Kotlin nullable types

Replace with

orNull()?.let(fa)?.right()