the detached events not trigger

[TerenceZ]

In the followed situations, some expected detached event(s) not fire:

1. [v-if] > [v-repeat] > [template] > [v-component]: In this structure, if we make [v-if] false after dynamic adding more components, the detached event won't be fired on the added components. demo
2. [v-repeat] > [template] > [v-component]: In this structure, if reduce the repeat items, it will destroy the redundant components. However it seems that it clears all detached events in _events before firing for the redundant components. It's worth noting that there are no problems for deeper components. demo

Test version: 0.11.5 ~ 0.11.7.

[yyx990803]

Case 1 has been fixed in the transclude-refactor branch.

Case 2 is a bit different, because v-events and events option both only works when the instance is still active. When you set total=0, all instances are destroyed and the event listeners also. This also means it's not recommended to use the event system to listen to the internal lifecycle hooks.

[TerenceZ]

Oh, I think it also means the component may be cleared when invoking the internal detached event. If so, it's worth documenting these in the guide.

[yyx990803]

Closing (no actionable item regarding codebase)