mix init options in the Module-global

lib/binding_web/prefix.js

@@ -1,9 +1,15 @@
-(function (root, factory) {
-  if (typeof define === 'function' && define.amd) {
-    define([], factory);
-  } else if (typeof exports === 'object') {
-    module.exports = factory();
-  } else {
-    window.TreeSitter = factory();
-  }
-}(this, function () {
+var TreeSitter = function() {
+  var initPromise;
+  class Parser {
+    constructor() {
+      this.initialize();
+    }
+
+    initialize() {
+      throw new Error("cannot construct a Parser before calling `init()`");
+    }
+
+    static init(moduleOptions) {
+      if (initPromise) return initPromise;
+      Module = { ...Module, ...moduleOptions };
+      return initPromise = new Promise((resolveInitPromise) => {