util

type Handler interface {
	UnSub()
}

type Watcher interface {
	Has(topic string) bool

	Pub(topic string, args ...interface{})

	PubAs(topicValue ...interface{})

	PubTo(topicType reflect.Type, args ...interface{})

	Sub(topic string, function interface{}) Handler

	SubAs(function interface{}) Handler

	SubTo(topicType reflect.Type, function interface{}) Handler
}