Return error when closing already closed emitter

217da8e8 · Cole Brown · b1629519 · 217da8e8
Commit 217da8e8 authored Jul 31, 2019 by Cole Brown
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basic.go basic.go +1 -1

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--- a/basic.go
+++ b/basic.go
@@ -38,7 +38,7 @@ func (e *emitter) Emit(evt interface{}) error {

 func (e *emitter) Close() error {
 	if !atomic.CompareAndSwapInt32(&e.closed, 0, 1) {
-		panic("closed an emitter more than once")
+		return fmt.Errorf("closed an emitter more than once")
 	}
 	if atomic.AddInt32(&e.n.nEmitters, -1) == 0 {
 		e.dropper(e.typ)