Optional projection / expression operator - e.g. maybeNullish ?:: transform(maybeNullish)

[aclaymore]

This other thread may be of interest:

[syntax] Inverse null coalescing operator

As there already exists a nullish coalescing operator (??), this implies a use case for an inverse nullish coalescing operator, which would still be a binary operator returning the second operand if the first one is not nullish (in contrast with ??). Sample use-case: when fetching a possibly nullish relation: let retrievedModel: Model | null = idOrNull === null ? null : await database.fetch<Model>(idOrNull); // the way it can be achieved now let retrievedModel: Model | null = idOrNull !? await…