54634628ac
`zone.js` added `removeAllListeners` and `eventListeners` methods in `EventTarget.prototype`, but those methods only exists when user import `zone.js` and also enables `EventTarget` monkey patching. If user: 1. Does not import `zone.js` and uses `noop` zone when bootstrapping Angular app. OR 2. Disable monkey patching of `EventTarget` patch by defining `__Zone_disable_EventTarget = true`. Then `removeAllListeners` and `eventListeners` methods will not be present. PR Close #35954