index.js 4.7 KB

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  1. "use strict";
  2. 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); }
  3. Object.defineProperty(exports, "__esModule", {
  4. value: true
  5. });
  6. exports.shrinkPaddedLEB128 = shrinkPaddedLEB128;
  7. var _wasmParser = require("@webassemblyjs/wasm-parser");
  8. var _leb = require("./leb128.js");
  9. function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
  10. 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); }
  11. 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); }; }
  12. 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); }
  13. function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }
  14. 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); }
  15. 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); }
  16. 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; } }
  17. function _isNativeFunction(fn) { return Function.toString.call(fn).indexOf("[native code]") !== -1; }
  18. function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }
  19. function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }
  20. var OptimizerError = /*#__PURE__*/function (_Error) {
  21. _inherits(OptimizerError, _Error);
  22. var _super = _createSuper(OptimizerError);
  23. function OptimizerError(name, initalError) {
  24. var _this;
  25. _classCallCheck(this, OptimizerError);
  26. _this = _super.call(this, "Error while optimizing: " + name + ": " + initalError.message);
  27. _this.stack = initalError.stack;
  28. return _this;
  29. }
  30. return OptimizerError;
  31. }( /*#__PURE__*/_wrapNativeSuper(Error));
  32. var decoderOpts = {
  33. ignoreCodeSection: true,
  34. ignoreDataSection: true
  35. };
  36. function shrinkPaddedLEB128(uint8Buffer) {
  37. try {
  38. var ast = (0, _wasmParser.decode)(uint8Buffer.buffer, decoderOpts);
  39. return (0, _leb.shrinkPaddedLEB128)(ast, uint8Buffer);
  40. } catch (e) {
  41. throw new OptimizerError("shrinkPaddedLEB128", e);
  42. }
  43. }