fixed bugs in TeeMany

utils.go

@@ -39,21 +39,28 @@ func Tee[T any](source <-chan T) (<-chan T, <-chan T) {
 // TeeMany returns a given amount of channels which all receive all values from source.
 // It's basically a copy function for channels
 func TeeMany[T any](source <-chan T, amount int) []<-chan T {
-	outs := make([]chan T, amount)
+	outputs := make([]chan T, amount)
+	for i := range outputs {
+		outputs[i] = make(chan T, cap(source))
+	}
 
 	go func() {
 		defer func() {
-			for _, out := range outs {
+			for _, out := range outputs {
 				close(out)
 			}
 		}()
 
 		for value := range source {
-			for _, out := range outs {
+			for _, out := range outputs {
 				out <- value
 			}
 		}
 	}()
 
-	return (interface{}(outs)).([]<-chan T)
+	readOnlyOutputs := make([]<-chan T, 0, amount)
+	for _, out := range outputs {
+		readOnlyOutputs = append(readOnlyOutputs, out)
+	}
+	return readOnlyOutputs
 }