simple-squiggle

A restricted subset of Squiggle
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wrapNativeSuper.js (1296B)

      1 var getPrototypeOf = require("./getPrototypeOf.js");
      2 
      3 var setPrototypeOf = require("./setPrototypeOf.js");
      4 
      5 var isNativeFunction = require("./isNativeFunction.js");
      6 
      7 var construct = require("./construct.js");
      8 
      9 function _wrapNativeSuper(Class) {
     10   var _cache = typeof Map === "function" ? new Map() : undefined;
     11 
     12   module.exports = _wrapNativeSuper = function _wrapNativeSuper(Class) {
     13     if (Class === null || !isNativeFunction(Class)) return Class;
     14 
     15     if (typeof Class !== "function") {
     16       throw new TypeError("Super expression must either be null or a function");
     17     }
     18 
     19     if (typeof _cache !== "undefined") {
     20       if (_cache.has(Class)) return _cache.get(Class);
     21 
     22       _cache.set(Class, Wrapper);
     23     }
     24 
     25     function Wrapper() {
     26       return construct(Class, arguments, getPrototypeOf(this).constructor);
     27     }
     28 
     29     Wrapper.prototype = Object.create(Class.prototype, {
     30       constructor: {
     31         value: Wrapper,
     32         enumerable: false,
     33         writable: true,
     34         configurable: true
     35       }
     36     });
     37     return setPrototypeOf(Wrapper, Class);
     38   }, module.exports.__esModule = true, module.exports["default"] = module.exports;
     39   return _wrapNativeSuper(Class);
     40 }
     41 
     42 module.exports = _wrapNativeSuper, module.exports.__esModule = true, module.exports["default"] = module.exports;