Use Emscripten's MODULARIZE_INSTANCE when building binaryen.js (#1368)

Author: dcodeIO

bin/binaryen.js

@@ -586,5 +586,6 @@ export_function "_BinaryenSetAPITracing"
   -Isrc/ \
   -s EXPORTED_FUNCTIONS=[${EXPORTED_FUNCTIONS}] \
   -o bin/binaryen${OUT_FILE_SUFFIX}.js \
-  --pre-js src/js/binaryen.js-pre.js \
+  -s MODULARIZE_INSTANCE=1 \
+  -s 'EXPORT_NAME="Binaryen"' \
   --post-js src/js/binaryen.js-post.js

bin/wasm.js

@@ -1563,19 +1563,3 @@ Module['setDebugInfo'] = function(on) {
 Module['setAPITracing'] = function(on) {
   return Module['_BinaryenSetAPITracing'](on);
 };
-
-// Instantiates a new unique instance of the API with its own memory etc.
-Module['instantiate'] = instantiate;
-return Module;
-
-} // end of instantiate
-
-// Module loader code borrowed from webpack
-if (typeof exports === 'object' && typeof module === 'object')
-  module.exports = instantiate();
-else if (typeof define === 'function' && define['amd'])
-  define([], instantiate);
-else if (typeof exports === 'object')
-  exports['Binaryen'] = instantiate();
-else
-  (typeof self !== "undefined" ? self : this)['Binaryen'] = instantiate();