1 files changed, 78 insertions, 0 deletions
diff --git a/node_modules/core-js/internals/object-create.js b/node_modules/core-js/internals/object-create.js
new file mode 100644
index 0000000..346d108
--- /dev/null
+++ b/node_modules/core-js/internals/object-create.js
@@ -0,0 +1,78 @@
+var anObject = require('../internals/an-object');
+var defineProperties = require('../internals/object-define-properties');
+var enumBugKeys = require('../internals/enum-bug-keys');
+var hiddenKeys = require('../internals/hidden-keys');
+var html = require('../internals/html');
+var documentCreateElement = require('../internals/document-create-element');
+var sharedKey = require('../internals/shared-key');
+
+var GT = '>';
+var LT = '<';
+var PROTOTYPE = 'prototype';
+var SCRIPT = 'script';
+var IE_PROTO = sharedKey('IE_PROTO');
+
+var EmptyConstructor = function () { /* empty */ };
+
+var scriptTag = function (content) {
+  return LT + SCRIPT + GT + content + LT + '/' + SCRIPT + GT;
+};
+
+// Create object with fake `null` prototype: use ActiveX Object with cleared prototype
+var NullProtoObjectViaActiveX = function (activeXDocument) {
+  activeXDocument.write(scriptTag(''));
+  activeXDocument.close();
+  var temp = activeXDocument.parentWindow.Object;
+  activeXDocument = null; // avoid memory leak
+  return temp;
+};
+
+// Create object with fake `null` prototype: use iframe Object with cleared prototype
+var NullProtoObjectViaIFrame = function () {
+  // Thrash, waste and sodomy: IE GC bug
+  var iframe = documentCreateElement('iframe');
+  var JS = 'java' + SCRIPT + ':';
+  var iframeDocument;
+  iframe.style.display = 'none';
+  html.appendChild(iframe);
+  // https://github.com/zloirock/core-js/issues/475
+  iframe.src = String(JS);
+  iframeDocument = iframe.contentWindow.document;
+  iframeDocument.open();
+  iframeDocument.write(scriptTag('document.F=Object'));
+  iframeDocument.close();
+  return iframeDocument.F;
+};
+
+// Check for document.domain and active x support
+// No need to use active x approach when document.domain is not set
+// see https://github.com/es-shims/es5-shim/issues/150
+// variation of https://github.com/kitcambridge/es5-shim/commit/4f738ac066346
+// avoid IE GC bug
+var activeXDocument;
+var NullProtoObject = function () {
+  try {
+    /* global ActiveXObject */
+    activeXDocument = document.domain && new ActiveXObject('htmlfile');
+  } catch (error) { /* ignore */ }
+  NullProtoObject = activeXDocument ? NullProtoObjectViaActiveX(activeXDocument) : NullProtoObjectViaIFrame();
+  var length = enumBugKeys.length;
+  while (length--) delete NullProtoObject[PROTOTYPE][enumBugKeys[length]];
+  return NullProtoObject();
+};
+
+hiddenKeys[IE_PROTO] = true;
+
+// `Object.create` method
+// https://tc39.github.io/ecma262/#sec-object.create
+module.exports = Object.create || function create(O, Properties) {
+  var result;
+  if (O !== null) {
+    EmptyConstructor[PROTOTYPE] = anObject(O);
+    result = new EmptyConstructor();
+    EmptyConstructor[PROTOTYPE] = null;
+    // add "__proto__" for Object.getPrototypeOf polyfill
+    result[IE_PROTO] = O;
+  } else result = NullProtoObject();
+  return Properties === undefined ? result : defineProperties(result, Properties);
+};