Subscribe to all events from EventBus?

Is it possible to subscribe to all events in the event bus? The examples I have read show usage for per event subscriptions; is there a example of a catch all? Or a maintained listing of all possible events?

You could override the fire method of the event bus to log all the events that are being fired.

class EventBusLogger {
  constructor(eventBus) {
    const fire =; = (type, data) => {
      console.log(type, data);

      fire(type, data);



@StephenOTT Just to understand your request a bit better: Why would you need such a list of events? What would be the use?

Hello, Philipp,

I´ve tried this code. I am able to get all the events, but when I get a shape from the palette into the canvas and try to connect it to any other shape in the diagram, I get this error:

“no shape type specified”

However, this problem does not happen when I add a shape from those that show when you click an element in the diagram.

I did some testing in the sanbox and the same problem happens.

This is the stack trace of the error:

Uncaught Error: no shape type specified
at ElementFactory.createBpmnElement (ElementFactory.js:37)
at ElementFactory.create (ElementFactory.js:29)
at ElementFactory.createConnection (ElementFactory.js:21)
at ConnectionPreview.getConnection (ConnectionPreview.js:76)
at eval (ConnectionPreview.js:28)
at eval (ConnectionPreview.js:106)
at ConnectionPreview.drawPreview (ConnectionPreview.js:32)
at eval (ConnectPreview.js:15)
at invokeFunction (EventBus.js:201)
at EventBus._invokeListener (EventBus.js:126)
at EventBus._invokeListeners (EventBus.js:118)
at (EventBus.js:93)
at (index.js:27)
at fire (Dragging.js:44)
at HTMLDocument.move (Dragging.js:88)

And finally:

Uncaught ReferenceError: keyEventHandler is not defined
at s.onkeydown (sandbox.8fe7e72a2.js:1)

Is it necessary to handle something else?

Thanks from your answer!