Hi,

On slow connection, we experience a crash during loading in our 
application. After some debugging, we found out that some core code was run 
before the .mem file was loaded.

Our application works as follows :

   - Some initialization JavaScript code runs and loads our application 
   JavaScript code asynchronously.
   - After the application JavaScript code is loaded, the main code is run 
   but basically does nothing.
   - We then call a native function from the JavaScript initialization code 
   to actually start the application.

The problem here is that we don't wait for the .mem file to be loaded. The 
application may start and try to allocate memory and then crash with an 
error message "cannot dynamically allocate, sbrk now has control".

Is there some Emscripten API that tells me that the memory file is ready?

Thanks,
Warren.

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