blob: dbaf92c3b9ba929acbafdf2a849b128877543c3b (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
|
// Copyright (C) 2019 Sony Interactive Entertainment Inc. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-optional-chaining-chain-evaluation
description: >
optional call must preserve this context, as with a non-optional call
info: |
OptionalChain : ?. Arguments
1. Let thisChain be this OptionalChain.
2. Let tailCall be IsInTailPosition(thisChain).
3. Return ? EvaluateCall(baseValue, baseReference, Arguments, tailCall).
features: [optional-chaining]
---*/
const a = {
b() { return this._b; },
_b: { c: 42 }
};
assert.sameValue(a?.b().c, 42);
assert.sameValue((a?.b)().c, 42);
assert.sameValue(a.b?.().c, 42);
assert.sameValue((a.b)?.().c, 42);
assert.sameValue(a?.b?.().c, 42);
assert.sameValue((a?.b)?.().c, 42);
reportCompare(0, 0);
|
