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// |reftest| module
// Copyright (C) 2016 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
description: >
Mutable bindings are initialized in the lexical environment record prior to
execution for variable declarations
esid: sec-moduledeclarationinstantiation
info: |
[...]
13. Let varDeclarations be the VarScopedDeclarations of code.
14. Let declaredVarNames be a new empty List.
15. For each element d in varDeclarations do
a. For each element dn of the BoundNames of d do
i. If dn is not an element of declaredVarNames, then
1. Perform ! envRec.CreateMutableBinding(dn, false).
2. Call envRec.InitializeBinding(dn, undefined).
3. Append dn to declaredVarNames.
[...]
includes: [fnGlobalObject.js]
flags: [module]
---*/
var global = fnGlobalObject();
assert.sameValue(test262, undefined, 'value is initialized to `undefined`');
assert.sameValue(
Object.getOwnPropertyDescriptor(global, 'test262'), undefined
);
var test262 = null;
assert.sameValue(test262, null, 'binding is mutable');
assert.sameValue(
Object.getOwnPropertyDescriptor(global, 'test262'),
undefined,
'global binding is not effected by evaluation of declaration'
);
reportCompare(0, 0);
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