Fix

lib/mirage.js

@@ -297,18 +297,19 @@ Mirage.prototype.__doPostStream = function(
               } else {
                 var dataPartObject = JSON.parse(dataPart);
 
+                // Acquire event name
+                // Important: add prefix if event streamed from Mirage is \
+                //   a reserved event (eg. 'error' becomes ':error').
+                var eventName = (eventBlock || "data");
+
+                if (STREAM_RESERVED_EVENTS.includes(eventName) === true) {
+                  eventName = (":" + eventName);
+                }
+
                 // Process at next event loop tick, as the 'data' event might \
                 //   come out-of-order.
                 setImmediate(function() {
                   // Raise event (fallback to 'data' if no event block)
-                  // Important: add prefix if event streamed from Mirage is \
-                  //   a reserved event (eg. 'error' becomes ':error').
-                  var eventName = (eventBlock || "data");
-
-                  if (STREAM_RESERVED_EVENTS.includes(eventName) === true) {
-                    eventName = (":" + eventName);
-                  }
-
                   emitter.emit(eventName, dataPartObject);
                 });
               }