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Viewing / Editing File: wrapNativeSuper.js

import getPrototypeOf from "./getPrototypeOf.js";
import setPrototypeOf from "./setPrototypeOf.js";
import isNativeFunction from "./isNativeFunction.js";
import construct from "./construct.js";
export default 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);
}

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