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Diffstat (limited to 'node_modules/es-abstract/2018/ObjectCreate.js')
-rw-r--r--node_modules/es-abstract/2018/ObjectCreate.js37
1 files changed, 37 insertions, 0 deletions
diff --git a/node_modules/es-abstract/2018/ObjectCreate.js b/node_modules/es-abstract/2018/ObjectCreate.js
new file mode 100644
index 000000000..e2445b022
--- /dev/null
+++ b/node_modules/es-abstract/2018/ObjectCreate.js
@@ -0,0 +1,37 @@
+'use strict';
+
+var GetIntrinsic = require('../GetIntrinsic');
+
+var $ObjectCreate = GetIntrinsic('%Object.create%', true);
+var $TypeError = GetIntrinsic('%TypeError%');
+var $SyntaxError = GetIntrinsic('%SyntaxError%');
+
+var Type = require('./Type');
+
+var hasProto = !({ __proto__: null } instanceof Object);
+
+// https://www.ecma-international.org/ecma-262/6.0/#sec-objectcreate
+
+module.exports = function ObjectCreate(proto, internalSlotsList) {
+ if (proto !== null && Type(proto) !== 'Object') {
+ throw new $TypeError('Assertion failed: `proto` must be null or an object');
+ }
+ var slots = arguments.length < 2 ? [] : internalSlotsList;
+ if (slots.length > 0) {
+ throw new $SyntaxError('es-abstract does not yet support internal slots');
+ }
+
+ if ($ObjectCreate) {
+ return $ObjectCreate(proto);
+ }
+ if (hasProto) {
+ return { __proto__: proto };
+ }
+
+ if (proto === null) {
+ throw new $SyntaxError('native Object.create support is required to create null objects');
+ }
+ var T = function T() {};
+ T.prototype = proto;
+ return new T();
+};