Updated the files.

my-app/node_modules/@webassemblyjs/wasm-opt/lib/index.js

@@ -0,0 +1,66 @@
+"use strict";
+
+function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.shrinkPaddedLEB128 = shrinkPaddedLEB128;
+
+var _wasmParser = require("@webassemblyjs/wasm-parser");
+
+var _leb = require("./leb128.js");
+
+function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
+
+function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }
+
+function _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }
+
+function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } else if (call !== void 0) { throw new TypeError("Derived constructors may only return object or undefined"); } return _assertThisInitialized(self); }
+
+function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }
+
+function _wrapNativeSuper(Class) { var _cache = typeof Map === "function" ? new Map() : undefined; _wrapNativeSuper = function _wrapNativeSuper(Class) { if (Class === null || !_isNativeFunction(Class)) return Class; if (typeof Class !== "function") { throw new TypeError("Super expression must either be null or a function"); } if (typeof _cache !== "undefined") { if (_cache.has(Class)) return _cache.get(Class); _cache.set(Class, Wrapper); } function Wrapper() { return _construct(Class, arguments, _getPrototypeOf(this).constructor); } Wrapper.prototype = Object.create(Class.prototype, { constructor: { value: Wrapper, enumerable: false, writable: true, configurable: true } }); return _setPrototypeOf(Wrapper, Class); }; return _wrapNativeSuper(Class); }
+
+function _construct(Parent, args, Class) { if (_isNativeReflectConstruct()) { _construct = Reflect.construct; } else { _construct = function _construct(Parent, args, Class) { var a = [null]; a.push.apply(a, args); var Constructor = Function.bind.apply(Parent, a); var instance = new Constructor(); if (Class) _setPrototypeOf(instance, Class.prototype); return instance; }; } return _construct.apply(null, arguments); }
+
+function _isNativeReflectConstruct() { if (typeof Reflect === "undefined" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === "function") return true; try { Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {})); return true; } catch (e) { return false; } }
+
+function _isNativeFunction(fn) { return Function.toString.call(fn).indexOf("[native code]") !== -1; }
+
+function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }
+
+function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }
+
+var OptimizerError = /*#__PURE__*/function (_Error) {
+  _inherits(OptimizerError, _Error);
+
+  var _super = _createSuper(OptimizerError);
+
+  function OptimizerError(name, initalError) {
+    var _this;
+
+    _classCallCheck(this, OptimizerError);
+
+    _this = _super.call(this, "Error while optimizing: " + name + ": " + initalError.message);
+    _this.stack = initalError.stack;
+    return _this;
+  }
+
+  return OptimizerError;
+}( /*#__PURE__*/_wrapNativeSuper(Error));
+
+var decoderOpts = {
+  ignoreCodeSection: true,
+  ignoreDataSection: true
+};
+
+function shrinkPaddedLEB128(uint8Buffer) {
+  try {
+    var ast = (0, _wasmParser.decode)(uint8Buffer.buffer, decoderOpts);
+    return (0, _leb.shrinkPaddedLEB128)(ast, uint8Buffer);
+  } catch (e) {
+    throw new OptimizerError("shrinkPaddedLEB128", e);
+  }
+}

my-app/node_modules/@webassemblyjs/wasm-opt/lib/leb128.js

@@ -0,0 +1,56 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.shrinkPaddedLEB128 = shrinkPaddedLEB128;
+
+var _ast = require("@webassemblyjs/ast");
+
+var _encoder = require("@webassemblyjs/wasm-gen/lib/encoder");
+
+var _helperBuffer = require("@webassemblyjs/helper-buffer");
+
+function shiftFollowingSections(ast, _ref, deltaInSizeEncoding) {
+  var section = _ref.section;
+  // Once we hit our section every that is after needs to be shifted by the delta
+  var encounteredSection = false;
+  (0, _ast.traverse)(ast, {
+    SectionMetadata: function SectionMetadata(path) {
+      if (path.node.section === section) {
+        encounteredSection = true;
+        return;
+      }
+
+      if (encounteredSection === true) {
+        (0, _ast.shiftSection)(ast, path.node, deltaInSizeEncoding);
+      }
+    }
+  });
+}
+
+function shrinkPaddedLEB128(ast, uint8Buffer) {
+  (0, _ast.traverse)(ast, {
+    SectionMetadata: function SectionMetadata(_ref2) {
+      var node = _ref2.node;
+
+      /**
+       * Section size
+       */
+      {
+        var newu32Encoded = (0, _encoder.encodeU32)(node.size.value);
+        var newu32EncodedLen = newu32Encoded.length;
+        var start = node.size.loc.start.column;
+        var end = node.size.loc.end.column;
+        var oldu32EncodedLen = end - start;
+
+        if (newu32EncodedLen !== oldu32EncodedLen) {
+          var deltaInSizeEncoding = oldu32EncodedLen - newu32EncodedLen;
+          uint8Buffer = (0, _helperBuffer.overrideBytesInBuffer)(uint8Buffer, start, end, newu32Encoded);
+          shiftFollowingSections(ast, node, -deltaInSizeEncoding);
+        }
+      }
+    }
+  });
+  return uint8Buffer;
+}

my-app/node_modules/@webassemblyjs/wasm-opt/package.json

@@ -0,0 +1,25 @@
+{
+  "name": "@webassemblyjs/wasm-opt",
+  "version": "1.11.6",
+  "description": "",
+  "main": "lib/index.js",
+  "module": "esm/index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/xtuc/webassemblyjs.git"
+  },
+  "publishConfig": {
+    "access": "public"
+  },
+  "author": "Sven Sauleau",
+  "license": "MIT",
+  "dependencies": {
+    "@webassemblyjs/ast": "1.11.6",
+    "@webassemblyjs/helper-buffer": "1.11.6",
+    "@webassemblyjs/wasm-gen": "1.11.6",
+    "@webassemblyjs/wasm-parser": "1.11.6"
+  }
+}