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40 lines
1.1 KiB
JavaScript
40 lines
1.1 KiB
JavaScript
// Copyright 2020 Toru Nagashima. All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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esid: sec-optional-chaining-chain-evaluation
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description: optional call invoked on eval function should be indirect eval.
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info: |
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Runtime Semantics: ChainEvaluation
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OptionalChain: ?. Arguments
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1. Let thisChain be this OptionalChain.
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2. Let tailCall be IsInTailPosition(thisChain).
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3. Return ? EvaluateCall(baseValue, baseReference, Arguments, tailCall).
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Runtime Semantics: EvaluateCall ( func, ref, arguments, tailPosition )
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...
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7. Let result be Call(func, thisValue, argList).
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...
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eval ( x )
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...
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4. Return ? PerformEval(x, callerRealm, false, false).
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Runtime Semantics: PerformEval ( x, callerRealm, strictCaller, direct )
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features: [optional-chaining]
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---*/
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const a = 'global';
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function fn() {
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const a = 'local';
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return eval?.('a');
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}
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assert.sameValue(fn(), 'global', 'fn() returns "global" value from indirect eval');
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const b = (a => eval?.('a'))('local');
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assert.sameValue(b, 'global', 'b is "global", from indirect eval not observing parameter');
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