animatingContext.swift

func animatingContext(duration: TimeInterval) -> ((@escaping (Void) -> Void) -> Void) {
	return { UIView.animate(withDuration: duration, animations: $0) }
}

public extension SignalProtocol {
	public func observe(context: @escaping (@escaping (Void) -> Void) -> Void) -> Signal<Value, Error> {
		return Signal { observer in
			return self.observe { event in
				switch event {
				case .value:
					context({ observer.action(event) })
				default:
					observer.action(event)
				}
			}
		}
	}
}