Export HEAP* module members for recent EMSDK changes.

Author: shoestringr

src/extra_exported_runtime_methods.json

@@ -10,6 +10,8 @@
   "stringToUTF16",
   "stringToUTF32",
   "AsciiToString",
+  "HEAP32",
+  "HEAPU8",
   "UTF8ToString",
   "UTF16ToString",
   "UTF32ToString",

src/types/globals.d.ts

@@ -11,7 +11,7 @@ declare function setValue(ptr: number, value: number, type: string): number;
 declare function mergeInto(library: object, methods: object): void;
 
 declare var HEAPU8: Uint8Array;
-declare var HEAPU32: Uint32Array;
+declare var HEAP32: Int32Array;
 declare var LibraryManager;
 declare var Module;
 declare var _vfsAccess;