Function executeDirectDispatch

spreadsheet/code/as-react-livescript/main.js:6190–6206

* Execution of a "direct" dispatch - there must be at most one dispatch * accumulated on the event or it is considered an error. It doesn't really make * sense for an event with multiple dispatches (bubbled) to keep track of the * return values at each dispatch execution, but it does tend to m

(event)

	 * @return The return value of executing the single dispatch.
	 */
	function executeDirectDispatch(event) {
	  if ("production" !== process.env.NODE_ENV) {
	    validateEventDispatches(event);
	  }
	  var dispatchListener = event._dispatchListeners;
	  var dispatchID = event._dispatchIDs;
	  ("production" !== process.env.NODE_ENV ? invariant(
	    !Array.isArray(dispatchListener),
	    'executeDirectDispatch(...): Invalid `event`.'
	  ) : invariant(!Array.isArray(dispatchListener)));
	  var res = dispatchListener ?
	    dispatchListener(event, dispatchID) :
	    null;
	  event._dispatchListeners = null;
	  event._dispatchIDs = null;
	  return res;
	}

	/**
	 * @param {SyntheticEvent} event