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Description
Originally we were planning on converting async/await into generators. However, as explained by @FlorianUekermann in #56, there's a good chance the async/await or generator implementation won't be enough:
If you are wondering why someone may want to use non-async event listeners in the first place, consider that JS has a well defined event flow (https://www.w3.org/TR/DOM-Level-3-Events/#event-flow), which gives you a lot of useful guarantees to work with (serial execution of event listeners, ordering of event listeners, bubbling, cancellation, etc.). All of that goes out the window once you are start using async.
Next steps:
- Create a test case where async/await event handlers produce out of order events
UPDATE Alrighty yep, as suggested by @FlorianUekermann, the problem can be illustrated here: http://jsbin.com/ximexelepa/1/edit?html,js,output
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