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// 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 function declarations
esid: sec-moduledeclarationinstantiation
info: |
[...]
17. For each element d in lexDeclarations do
a. For each element dn of the BoundNames of d do
i. If IsConstantDeclaration of d is true, then
[...]
ii. Else,
1. Perform ! envRec.CreateMutableBinding(dn, false).
iii. If d is a GeneratorDeclaration production or a
FunctionDeclaration production, then
1. Let fo be the result of performing InstantiateFunctionObject
for d with argument env.
2. Call envRec.InitializeBinding(dn, fo).
[...]
includes: [fnGlobalObject.js]
flags: [module]
---*/
var global = fnGlobalObject();
assert.sameValue(typeof test262, 'function', 'function value is hoisted');
assert.sameValue(test262(), 'test262', 'hoisted function value is correct');
assert.sameValue(
Object.getOwnPropertyDescriptor(global, 'test262'), undefined
);
test262 = null;
assert.sameValue(test262, null, 'binding is mutable');
assert.sameValue(
Object.getOwnPropertyDescriptor(global, 'test262'), undefined
);
function test262() { return 'test262'; }
assert.sameValue(
test262, null, 'binding is not effected by evaluation of declaration'
);
assert.sameValue(
Object.getOwnPropertyDescriptor(global, 'test262'),
undefined,
'global binding is not effected by evaluation of declaration'
);
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