Wraps the generated code inside UMD markers

package.json

@@ -6,7 +6,7 @@
   "browser": "./browser",
   "scripts": {
     "build:node": "node-gyp configure build",
-    "build:browser": "em++ --bind -o browser.js -O3 -std=c++14 -I src/bindings/em -I src/core -include iostream src/core/*.cc src/bindings/em/*.cc -s TOTAL_MEMORY=134217728 --memory-init-file 0",
+    "build:browser": "em++ --bind -o browser.js -O3 -std=c++14 -I src/bindings/em -I src/core --pre-js src/bindings/em/prologue.js --post-js src/bindings/em/epilogue.js src/core/*.cc src/bindings/em/*.cc -s TOTAL_MEMORY=134217728 --memory-init-file 0",
     "build:browser:maybe": "test -f browser.js || test -n \"$CI\" || ! command -v em++ 2>&1 > /dev/null || npm run build:browser",
     "build:all": "npm run build:node && npm run build:browser",
     "install": "npm run build:node && npm run build:browser:maybe",

src/bindings/em/epilogue.js

@@ -0,0 +1,4 @@
+
+    return Module;
+
+}));

src/bindings/em/prologue.js

@@ -0,0 +1,11 @@
+(function (root, factory) {
+
+    if (typeof define === 'function' && define.amd) {
+        define([], factory);
+    } else if (typeof exports === 'object') {
+        module.exports = factory();
+    } else {
+        window.Superstring = factory();
+    }
+
+}(this, function () {