// Copyright 2019 Google, LLC. All rights reserved. | |
// This code is governed by the BSD license found in the LICENSE file. | |
/*--- | |
esid: prod-OptionalExpression | |
description: > | |
optional chain in test portion of do while statement | |
info: | | |
IterationStatement | |
for (LeftHandSideExpression in Expression) Statement | |
features: [optional-chaining] | |
---*/ | |
const obj = { | |
inner: { | |
a: 1, | |
b: 2 | |
} | |
}; | |
let str = ''; | |
for (const key in obj?.inner) { | |
str += key; | |
} | |
assert.sameValue('ab', str); |