2 // Copyright (C) 2016 the V8 project authors. All rights reserved.
3 // This code is governed by the BSD license found in the LICENSE file.
6 Mutable bindings are initialized in the lexical environment record prior to
7 execution for variable declarations
8 esid: sec-moduledeclarationinstantiation
11 13. Let varDeclarations be the VarScopedDeclarations of code.
12 14. Let declaredVarNames be a new empty List.
13 15. For each element d in varDeclarations do
14 a. For each element dn of the BoundNames of d do
15 i. If dn is not an element of declaredVarNames, then
16 1. Perform ! envRec.CreateMutableBinding(dn, false).
17 2. Call envRec.InitializeBinding(dn, undefined).
18 3. Append dn to declaredVarNames.
20 includes: [fnGlobalObject.js]
24 var global = fnGlobalObject();
26 assert.sameValue(test262, undefined, 'value is initialized to `undefined`');
28 Object.getOwnPropertyDescriptor(global, 'test262'), undefined
33 assert.sameValue(test262, null, 'binding is mutable');
35 Object.getOwnPropertyDescriptor(global, 'test262'),
37 'global binding is not effected by evaluation of declaration'