That's pretty much how GWT was.

On Sat, Oct 8, 2016 at 1:34 PM, OvermindDL1 <overmind...@gmail.com> wrote:

> The 'official' interaction between Elm and javascript is via ports, which
> involves marshelling any JSON-compatible type across the interface.  From
> the Javascript side it involves just 'send'ing something to somewhere (like
> via `Elm.MyApp.ports.someport.send("something");`) or to get data from
> Elm you 'subscribe' to it (such as in `Elm.MyApp.ports.someport.
> subscribe(function(msg){console.log(msg);})`).  It defines a specific
> interface for data to transfer over so everything on the Elm side can be
> 'safe' and any unsafe access happens only through know access points.
>
>
> On Saturday, October 8, 2016 at 12:22:12 PM UTC-6, Dave Ford wrote:
>>
>> My experience with compile-to-js languages include: GWT, Dart and
>> TypeScript.
>>
>> GWT was very good at *calling* JS libraries. Almost zero friction. But
>> not so, in the other direction. Creating API's to be consumed by JS was so
>> ugly that I can confidently say that it was not worth it. Unless you are
>> creating an API that has a very small surface area to functionality ration
>> (like maybe a spell checker).
>>
>> Dart has a similar story to GWT.
>>
>> By far the best inter-op story is TypeScript. If you write a lib
>> in TypeScript it can be consumed by JS as-is. No special anything is
>> needed.
>>
>> So my question is, where does Elm fall in this spectrum. Is it advisable
>> to create an api in Elm to be consumed by JS developers?
>>
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