事件：'removeListener'

🌐 Event: 'removeListener'

版本历史
版本变更
v6.1.0, v4.7.0

For listeners attached using .once(), the listener argument now yields the original listener function.

v0.9.3

新增于: v0.9.3

'removeListener' 事件会在 listener 被移除之后触发。

🌐 The 'removeListener' event is emitted after the listener is removed.