Fix for newer versions of emscripten

emscripten/Makefile

 #CXXFLAGS+=-s USE_PTHREADS=1
 
 # NOTE: extra flags for emscripten
-EM_CXXFLAGS=-s RESERVED_FUNCTION_POINTERS=2 --memory-init-file 0
+EM_CXXFLAGS=-s RESERVED_FUNCTION_POINTERS=2 --memory-init-file 0 -s FORCE_FILESYSTEM=1 -s WASM=0
 
 
 

emscripten/js/demo.js

   tts.synthesize(
     user_text,
     function cb(samples, events) {
-      //console.log('  Inside synt cb');
+      console.log('  Receiving synthesis samples...');
       if (!samples) {
         if (pusher) {
           pusher.close();
   ); // end of tts.synthesize()
   console.log('  Calling synthesize... done');  
   console.log('Leaving speak()');
-
 } // end of speak()
 
 function ipa() {

emscripten/post.js

     return aCallback(data, events) ? 1 : 0;
   }
 
-  var fp = Runtime.addFunction(cb);
+  var fp = addFunction(cb);
   this.synth_(aText, fp);
-  Runtime.removeFunction(fp);
+  removeFunction(fp);
 };
 
 eSpeakNGWorker.prototype.synthesize_ipa = function (aText, aCallback) {