I'm not sure what "export of the index" means.

On Monday, April 15, 2019 at 1:34:24 PM UTC-7, Alon Zakai wrote:
>
> There is no direct way to get the function pointer from the function 
> itself. That is, if bar was exported, you can call it but you don't know 
> its index in the function table.
>
> Options are to either export a function like you suggest, or to add an 
> export of the index.
>
> On Wed, Apr 10, 2019 at 8:46 PM Brian Craft <[email protected] 
> <javascript:>> wrote:
>
>> Should read "return bar" :-p
>>
>> On Wednesday, April 10, 2019 at 8:28:10 PM UTC-7, Brian Craft wrote:
>>>
>>> Is there a way to access a function pointer from javascript without 
>>> writing a wasm method to retrieve it?
>>>
>>> E.g. if I've exported functions 'foo' and 'bar', and 'foo' takes 'bar' 
>>> as an argument, how can I make the call from javascript?
>>>
>>> I can write another method that just returns the 'bar' pointer, 
>>> something like
>>>
>>> typedef void (*voidfn)();
>>>
>>> voidfn getBar() {
>>>    return foo;
>>> }
>>>
>>>  and make the call with
>>>
>>> Module._foo(Module._getBar())
>>>
>>> My question is can I get the bar pointer from the exports without having 
>>> to also write and export getBar()?
>>>
>>> -- 
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