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[React Fiber] EventPluginHub causes many crashes

See original GitHub issue

Description

After Upgrade to 0.43 and corresponding Fiber Update there got a new Bug introduced regarding Event Handling. If you press twice on a button and due to a lag or something like that the event get’s fired when the calling element got already unmounted the app crashes.

undefined is not an object (evaluating 'props[registrationName]') undefined is not an object (evaluating 'props[registrationName]')

https://github.com/facebook/react-native/blob/fd4ad6ca82676e4f63bad26eb0869981439ba106/Libraries/Renderer/src/renderers/shared/shared/event/EventPluginHub.js#L150

( I symbolicated this by hand so here is the original issue and the corresponding minified line )

undefined is not an object (evaluating 'u[n]') undefined is not an object (evaluating 'u[n]')

[_d(function(e,n,t,r){"use strict";function u(e){return"button"===e||"input"===e||"select"===e||"textarea"===e}function o(e,n,t){switch(e){case"onClick":case"onClickCapture":case"onDoubleClick":case"onDoubleClickCapture":case"onMouseDown":case"onMouseDownCapture":case"onMouseMove":case"onMouseMoveCapture":case"onMouseUp":case"onMouseUpCapture":return!(!t.disabled||!u(n));default:return!1}}var s=n(95),i=n(96),c=n(97),a=n(98),l=n(99),p=n(22),f=null,v=function(e,n){e&&(i.executeDispatchesInOrder(e,n),e.isPersistent()||e.constructor.release(e))},d=function(e){return v(e,!0)},E=function(e){return v(e,!1)},g={injection:{injectEventPluginOrder:s.injectEventPluginOrder,injectEventPluginsByName:s.injectEventPluginsByName},getListener:function(e,n){var t;if("number"==typeof e.tag){var r=i.getFiberCurrentPropsFromNode(e.stateNode);if(!r)return null;if(t=r[n],o(n,e.type,r))return null}else{if("string"==typeof e._currentElement)return null;if(!e._rootNodeID)return null;var u=e._currentElement.props;if(t=u[n],o(n,e._currentElement.type,u))return null}return p(!t||"function"==typeof t,"Expected %s listener to be a function, instead got type %s",n,typeof t),t},extractEvents:function(e,n,t,r){for(var u,o=s.plugins,i=0;i<o.length;i++){var c=o[i];if(c){var l=c.extractEvents(e,n,t,r);l&&(u=a(u,l))}}return u},enqueueEvents:function(e){e&&(f=a(f,e))},processEventQueue:function(e){var n=f;f=null,e?l(n,d):l(n,E),p(!f,"processEventQueue(): Additional events were enqueued while processing an event queue. Support for this has not yet been implemented."),c.rethrowCaughtError()}};t.exports=g},94);](url)

Reproduction

What you need to Trigger this Bug:

a) Release Build b) A View with Button that is expensive to render - best on a different scene c) Now Switch fast between Scenes and Press Button ( Press Buttons like maniac 😉 ). At some point if there’s a lag or sth. and an Touch Event i too late an issue is thrown at that point and the whole app crashes: