Let’s get serious about ES6 generator functions

Good stuff. This will come in handy if node.js 0.12 takes much longer.<p>Watching the use of generators in JavaScript and especially node.js is going to be very exciting over the coming years. We&#x27;re excited at LinkedIn because we write a lot of node.js, and control flow is always being discussed: step, async, stepup, promises, and async generators look to solve a lot of that.<p>Also, checkout the AGen formal spec[1] for asynchronous generators. Raynos and I put it together recently to encourage interoperability between async generator solutions, and we&#x27;re both using it in personal projects.[2]<p>[1] <a href="https://github.com/AsynchronousGenerators/agen-spec" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;AsynchronousGenerators&#x2F;agen-spec</a><p>[2] <a href="https://github.com/Raynos/gens" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;Raynos&#x2F;gens</a>

Primary author here. Ask me anything!

You should make a browserify transform (<a href="https://github.com/substack/node-browserify" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;substack&#x2F;node-browserify</a>) so that it can easily be put into a pipeline to convert generator code to es5 code. Folks using browserify will be able to use it very easily.

Thank you! This is so exciting. I&#x27;ve been wanting to try things like go style concurrency (<a href="http://swannodette.github.io/2013/08/24/es6-generators-and-csp/" rel="nofollow">http:&#x2F;&#x2F;swannodette.github.io&#x2F;2013&#x2F;08&#x2F;24&#x2F;es6-generators-and-c...</a>) in the browser, and this seems like it will help us get there. Granted, haven&#x27;t tried it yet, and really understand nothing about any of this, but ... Anyway, hooray :)

This is similar to my asyncscript pet project[1] (that was met with much resistance on the Node.js mailing list as it was Yet Another CPS Framework). It drew inspiration from the way that C# creates the state machines for &quot;yield&quot; and &quot;await&quot;. The project is dead (it only dealt with async calls and I never got round to &quot;enumeration generators&quot;), but if you are wondering how regenerator works I have a nice explanation at the bottom of readme.md.<p>[1]: <a href="https://github.com/jcdickinson/asyncscript" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;jcdickinson&#x2F;asyncscript</a>

I couldn&#x27;t find information why generator functions in JS require &#x27;*&#x27; in the syntax (ES6 spec&#x2F;wiki just states this as a fact, but no rationale). Does anybody know?<p>Python manages to work fine without ugly wart in the syntax, and it seems to me that presence of `yield` keyword in body is enough at syntactical level to tell compiler that the function is a generator.