Strict mode Failing
Expected no error, got ReferenceError: Property 'a' doesn't exist
non-Strict mode Failing
Expected no error, got ReferenceError: Property 'a' doesn't exist
Features:
- optional-chaining
Expected no error, got ReferenceError: Property 'a' doesn't exist
Expected no error, got ReferenceError: Property 'a' doesn't exist
// Copyright 2020 Toru Nagashima. 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 invoked on eval function should be indirect eval.
info: |
Runtime Semantics: ChainEvaluation
OptionalChain: ?. Arguments
1. Let thisChain be this OptionalChain.
2. Let tailCall be IsInTailPosition(thisChain).
3. Return ? EvaluateCall(baseValue, baseReference, Arguments, tailCall).
Runtime Semantics: EvaluateCall ( func, ref, arguments, tailPosition )
...
7. Let result be Call(func, thisValue, argList).
...
eval ( x )
...
4. Return ? PerformEval(x, callerRealm, false, false).
Runtime Semantics: PerformEval ( x, callerRealm, strictCaller, direct )
features: [optional-chaining]
---*/
const a = 'global';
function fn() {
const a = 'local';
return eval?.('a');
}
assert.sameValue(fn(), 'global', 'fn() returns "global" value from indirect eval');
const b = (a => eval?.('a'))('local');
assert.sameValue(b, 'global', 'b is "global", from indirect eval not observing parameter');