Always return something valid

b368549f · obscuren · c44f4f32 · b368549f
Commit b368549f authored Aug 21, 2014 by obscuren
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js_pipe.go ethpipe/js_pipe.go +5 -0

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--- a/ethpipe/js_pipe.go
+++ b/ethpipe/js_pipe.go
@@ -276,6 +276,11 @@ func (self *JSFilter) MessagesToJson(messages ethstate.Messages) string {
 		msgs = append(msgs, NewJSMessage(m))
 	}

+	// Return an empty array instead of "null"
+	if len(msgs) == 0 {
+		return "[]"
+	}
+
 	b, err := json.Marshal(msgs)
 	if err != nil {
 		return "{\"error\":" + err.Error() + "}"