rename variable for clarity

src/index.ts

@@ -114,21 +114,21 @@ function processEvents(interpreter:Interpreter_T){
   Object.values(interpreter.subscriptions).forEach((subscriptionCallbackFunction)=>{ subscriptionCallbackFunction(interpreter); });
 }
 function processNextEvent(interpreter:Interpreter_T){
-  const nextEvent = interpreter.eventQueue.shift();
-  if(typeof nextEvent !== 'undefined'){
+  const event = interpreter.eventQueue.shift();
+  if(typeof event !== 'undefined'){
     const state = getState(interpreter);
-    const eventReactionCouplings = getMatchingEventReactionCouplings(state, nextEvent);
+    const eventReactionCouplings = getMatchingEventReactionCouplings(state, event);
     const reactions = eventReactionCouplings
       .map((eventReactionCoupling)=>eventReactionCoupling.reactions)
       .flat();
     const {sideEffects, contextMutations, goto_} = categorizeReactions(reactions);
-    // can process sideEffects in parallel:
+    // can process sideEffects in parallel (though we currently don't due to the overhead of doing so in Node.js):
     sideEffects.forEach((sideEffect)=>{
-      sideEffect.fn(interpreter.context, nextEvent, interpreter);
+      sideEffect.fn(interpreter.context, event, interpreter);
     });
     // must process contextMutations in-series:
     contextMutations.forEach((contextMutation)=>{
-      interpreter.context = contextMutation.fn(interpreter.context, nextEvent, interpreter);
+      interpreter.context = contextMutation.fn(interpreter.context, event, interpreter);
     });
     // processing of `goto` must be last:
     if(goto_ !== null){