gistfile1.js

function uid(key){
  return 'Symbol(' + key + ')_' + (++sid + Math.random()).toString(36);
}
uid.safe = require('./$').g.Symbol || uid;
module.exports = uid;
},{"./$":33}],43:[function(require,module,exports){
// 22.1.3.31 Array.prototype[@@unscopables]
var $           = require('./$')
  , UNSCOPABLES = require('./$.wks')('unscopables');
if($.FW && !(UNSCOPABLES in []))$.hide(Array.prototype, UNSCOPABLES, {});
module.exports = function(key){
  if($.FW)[][UNSCOPABLES][key] = true;
};
},{"./$":33,"./$.wks":44}],44:[function(require,module,exports){
var global = require('./$').g
  , store  = {};
module.exports = function(name){
  return store[name] || (store[name] =
    global.Symbol && global.Symbol[name] || require('./$.uid').safe('Symbol.' + name));
};
},{"./$":33,"./$.uid":42}],45:[function(require,module,exports){
var $                = require('./$')
  , cof              = require('./$.cof')
  , $def             = require('./$.def')
  , invoke           = require('./$.invoke')
  , arrayMethod      = require('./$.array-methods')
  , IE_PROTO         = require('./$.uid').safe('__proto__')
  , assert           = require('./$.assert')
  , assertObject     = assert.obj
  , ObjectProto      = Object.prototype
  , A                = []
  , slice            = A.slice
  , indexOf          = A.indexOf
  , classof          = cof.classof
  , has              = $.has
  , defineProperty   = $.setDesc
  , getOwnDescriptor = $.getDesc
  , defineProperties = $.setDescs
  , isFunction       = $.isFunction
  , toObject         = $.toObject
  , toLength         = $.toLength
  , IE8_DOM_DEFINE   = false;

if(!$.DESC){
  try {
    IE8_DOM_DEFINE = defineProperty(document.createElement('div'), 'x',
      {get: function(){ return 8; }}
    ).x == 8;
  } catch(e){ /* empty */ }
  $.setDesc = function(O, P, Attributes){
    if(IE8_DOM_DEFINE)try {
      return defineProperty(O, P, Attributes);
    } catch(e){ /* empty */ }
    if('get' in Attributes || 'set' in Attributes)throw TypeError('Accessors not supported!');
    if('value' in Attributes)assertObject(O)[P] = Attributes.value;
    return O;
  };
  $.getDesc = function(O, P){
    if(IE8_DOM_DEFINE)try {
      return getOwnDescriptor(O, P);
    } catch(e){ /* empty */ }
    if(has(O, P))return $.desc(!ObjectProto.propertyIsEnumerable.call(O, P), O[P]);
  };
  $.setDescs = defineProperties = function(O, Properties){
    assertObject(O);
    var keys   = $.getKeys(Properties)
      , length = keys.length
      , i = 0
      , P;
    while(length > i)$.setDesc(O, P = keys[i++], Properties[P]);
    return O;
  };
}
$def($def.S + $def.F * !$.DESC, 'Object', {
  // 19.1.2.6 / 15.2.3.3 Object.getOwnPropertyDescriptor(O, P)
  getOwnPropertyDescriptor: $.getDesc,
  // 19.1.2.4 / 15.2.3.6 Object.defineProperty(O, P, Attributes)
  defineProperty: $.setDesc,
  // 19.1.2.3 / 15.2.3.7 Object.defineProperties(O, Properties)
  defineProperties: defineProperties
});

  // IE 8- don't enum bug keys
var keys1 = ('constructor,hasOwnProperty,isPrototypeOf,propertyIsEnumerable,' +
            'toLocaleString,toString,valueOf').split(',')
  // Additional keys for getOwnPropertyNames
  , keys2 = keys1.concat('length', 'prototype')
  , keysLen1 = keys1.length;

// Create object with `null` prototype: use iframe Object with cleared prototype
var createDict = function(){
  // Thrash, waste and sodomy: IE GC bug
  var iframe = document.createElement('iframe')
    , i      = keysLen1
    , gt     = '>'
    , iframeDocument;
  iframe.style.display = 'none';
  $.html.appendChild(iframe);
  iframe.src = 'javascript:'; // eslint-disable-line no-script-url
  // createDict = iframe.contentWindow.Object;
  // html.removeChild(iframe);
  iframeDocument = iframe.contentWindow.document;
  iframeDocument.open();
  iframeDocument.write('<script>document.F=Object</script' + gt);
  iframeDocument.close();
  createDict = iframeDocument.F;
  while(i--)delete createDict.prototype[keys1[i]];
  return createDict();
};