wrapNativeSuper.js 1.2 KB

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  1. var _Object$create = require("../core-js/object/create");
  2. var _Map = require("../core-js/map");
  3. var getPrototypeOf = require("./getPrototypeOf");
  4. var setPrototypeOf = require("./setPrototypeOf");
  5. var isNativeFunction = require("./isNativeFunction");
  6. var construct = require("./construct");
  7. function _wrapNativeSuper(Class) {
  8. var _cache = typeof _Map === "function" ? new _Map() : undefined;
  9. module.exports = _wrapNativeSuper = function _wrapNativeSuper(Class) {
  10. if (Class === null || !isNativeFunction(Class)) return Class;
  11. if (typeof Class !== "function") {
  12. throw new TypeError("Super expression must either be null or a function");
  13. }
  14. if (typeof _cache !== "undefined") {
  15. if (_cache.has(Class)) return _cache.get(Class);
  16. _cache.set(Class, Wrapper);
  17. }
  18. function Wrapper() {
  19. return construct(Class, arguments, getPrototypeOf(this).constructor);
  20. }
  21. Wrapper.prototype = _Object$create(Class.prototype, {
  22. constructor: {
  23. value: Wrapper,
  24. enumerable: false,
  25. writable: true,
  26. configurable: true
  27. }
  28. });
  29. return setPrototypeOf(Wrapper, Class);
  30. };
  31. return _wrapNativeSuper(Class);
  32. }
  33. module.exports = _wrapNativeSuper;