Full scaffolding for Publisher.prefixInclusive.

prefix_while_inclusive_full_scaffolding.swift

extension Publisher {
	func prefixInclusive(while predicate: @escaping (Output) -> Bool) -> AnyPublisher<Output, Failure> {
		flatMap { value -> AnyPublisher<PrefixInclusiveEvent<Output>, Failure> in
			if predicate(value) {
				return Just(.predicatePassingValueOrIncluded(value))
					.setFailureType(to: Failure.self)
					.eraseToAnyPublisher()
			} else {
				return [.predicatePassingValueOrIncluded(value), .end]
					.publisher
					.setFailureType(to: Failure.self)
					.eraseToAnyPublisher()
			}
		}
		.prefix(while: \.isPredicatePassingValueOrIncluded) // Leaning on the `PrefixInclusiveEvent`
		// enumeration properties we defined earlier.
		.compactMap(\.output)
		.eraseToAnyPublisher()
	}
}