git.r.bdr.sh - rbdr/dotfiles/blob

   1 'use strict';
   2
   3 var create = Object.create, getPrototypeOf = Object.getPrototypeOf
   4   , x = {};
   5
   6 module.exports = function (/*customCreate*/) {
   7         var setPrototypeOf = Object.setPrototypeOf
   8           , customCreate = arguments[0] || create;
   9         if (typeof setPrototypeOf !== 'function') return false;
  10         return getPrototypeOf(setPrototypeOf(customCreate(null), x)) === x;
  11 };