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From Alex Harui <aha...@adobe.com>
Subject Re: FlexJS and Dart?
Date Fri, 15 Jul 2016 05:28:29 GMT
Hi Jason,

FlexJS isn't one framework/component set.  It is being designed to support
a multitude of component sets.  The initial "Basic" component set that we
have been working on is designed to have minimum overhead in its JS
output.  In the Basic set, we specifically do not want to emulate Flash in
the browser because that will likely add another layer of overhead.  There
is an experiment underway for a component set that does emulate Flash and
it will be a bigger effort and bigger code.

In the APIs for the Basic set, I tried to keep some Flex concepts and
APIs, but I don't think I tied the APIs to Flash.  Can you give me an
example of the "crud" you are talking about?  I think we can support
workers some day.  I still believe that it will be to your advantage to be
able to test your code with a "runtime verifier" which is why the Basic
set compiles to both SWF and JS.  Most JS tools want you to have all of
your code in one place.  Large apps are often built in a truly modular
fashion where code isn't or can't be gathered in one place.

You can even use FlexJS/FalconJX compiler without the Basic component set
and just write ActionScript against native JS APIs or third-party

Or you can grow your own component set that is more tuned to what you
want.  It can have signals, or whatever you want.  It doesn't have to run
as a SWF.  All we are providing is MXML and AS compilation and some
default SWCs, but our SWCs don't have to be the SWCs you use.

In theory, you could even get the cross-compiler to spit out Dart instead
of JS, but I haven't spent any time figuring out how hard what would be.
Somebody could probably teach the compiler to handle generics and other
language improvements that can be output as additional code and don't need
runtime changes in the SWF and certainly for cross-compiled output.

That's the cool part of Apache projects.  No corporation controlling
things. You can do pretty much whatever you want.


On 7/14/16, 6:14 PM, "Jason Taylor" <jason@dedoose.com> wrote:

>Hey guys, for various reasons I'm leaning towards picking Dart over
>actionscript for future projects, mostly because the dart language is
>advanced supporting async/await, generics, abstracts, and much more.
>However I think the team behind MXML, especially in FlexJS and the layout
>framework are second to none.   I was contemplating bringing in FlexJS to
>dart via StageXL (http://www.stagexl.org/) an implmentation of the core
>flash runtine in Dart, along with a custom version of FlexJS that I would
>cross compile to Dart.    Has anyone considered this path, and what are
>you're thoughts about this?   Personally I don't like some of the
>decisions made in the FlexJS project regarding supporting flash runtimes
>as well as JS as it adds a lot of crud to the FlexJS codebase and ties
>our hands limiting us specifically to the flash runtime and avoiding some
>of the more multi-threaded oriented javascript developments.     Just
>want to gather some opinions before me and my team start tearing into
>this.   Some changes I would make to the FlexJS framework will include
>using something like signals instead of string events, heavily using
>multiple threads for layout & rendering.
>~ JT

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