Source code
Revision control
Copy as Markdown
Other Tools
// Copyright (C) 2016 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-iteration-statements
es6id: 13.7
description: >
The token sequence `let [`is interpreted as the beginning of a destructuring
binding pattern
info: |
Syntax
IterationStatement[Yield, Return]:
for ( [lookahead ∉ { let [ } ] LeftHandSideExpression[?Yield] in
Expression[+In, ?Yield] ) Statement[?Yield, ?Return]
for ( ForDeclaration[?Yield] in Expression[+In, ?Yield] )
Statement[?Yield, ?Return]
---*/
var obj = Object.create(null);
var value;
obj.key = 1;
for ( let[x] in obj ) {
value = x;
}
assert.sameValue(typeof x, 'undefined', 'binding is block-scoped');
assert.sameValue(value, 'k');
reportCompare(0, 0);