polac24

public typealias HandleAction<T> = (T) throws -> ()

public protocol ErrorHandleable: class {
    func `throw`(_: Error, finally: @escaping (Bool) -> Void)
    func `catch`(action: @escaping HandleAction<Error>) -> ErrorHandleable
}

public class ErrorHandler: ErrorHandleable {
    private var parent: ErrorHandler?
    private let action: HandleAction<Error>