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Contents
// 19.1.2.2 / 15.2.3.5 Object.create(O [, Properties])
var anObject = require('./_an-object')
, dPs = require('./_object-dps')
, enumBugKeys = require('./_enum-bug-keys')
, IE_PROTO = require('./_shared-key')('IE_PROTO')
, Empty = function(){ /* empty */ }
, PROTOTYPE = 'prototype';
// Create object with fake `null` prototype: use iframe Object with cleared prototype
var createDict = function(){
// Thrash, waste and sodomy: IE GC bug
var iframe = require('./_dom-create')('iframe')
, i = enumBugKeys.length
, gt = '>'
, iframeDocument;
iframe.style.display = 'none';
require('./_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][enumBugKeys[i]];
return createDict();
};
module.exports = Object.create || function create(O, Properties){
var result;
if(O !== null){
Empty[PROTOTYPE] = anObject(O);
result = new Empty;
Empty[PROTOTYPE] = null;
// add "__proto__" for Object.getPrototypeOf polyfill
result[IE_PROTO] = O;
} else result = createDict();
return Properties === undefined ? result : dPs(result, Properties);
};
Version data entries
314 entries across 6 versions & 1 rubygems