Using standard iterators

[Yomguithereal]

Hello @acarl005. Thanks for the awesome library. Would you consider switching from generators (using the yield keyword) to basic JS iterators (just the object with the next function & following JS iterator protocol) so that it remains possible to use your library with more old-school JS engines (+ attaching Symbol.iterator so that your API remains totally unchanged)?

I could help you achieve that by recoding the necessary parts if you'd like.

As a side note, I am wondering whether you attempted to benchmark generators vs. iterator protocol and if you went for generators for obvious performance reasons I missed.

Have a good day.

[acarl005]

@Yomguithereal I'm not really interested in supporting older JS engines. There are many other libraries to choose from if the engine doesn't have generators.

Yeah I did run benchmarks on one function that I re-wrote to use the plain iterator protocol. It was on Node v6.0.0 and generators were a little over 2 times slower. But I ran them again when Node v7 came out and they are nearly the same. I trust that generators will become more optimized over time.