Version 1

[yaffs-website] / node_modules / core-js / library / modules / _object-create.js

diff --git a/node_modules/core-js/library/modules/_object-create.js b/node_modules/core-js/library/modules/_object-create.js
new file mode 100644 (file)
index 0000000..3379760
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+++ b/node_modules/core-js/library/modules/_object-create.js
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+// 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
+    , lt     = '<'
+    , 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(lt + 'script' + gt + 'document.F=Object' + lt + '/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);
+};