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34 lines
1.1 KiB
JavaScript
34 lines
1.1 KiB
JavaScript
// Copyright (C) 2016 the V8 project authors. 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-functiondeclarationinstantiation
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description: >
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Creation of new variable environment for the function body (as distinct from
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that for the function's parameters)
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info: |
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[...]
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26. If hasParameterExpressions is false, then
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[...]
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27. Else,
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a. NOTE A separate Environment Record is needed to ensure that closures
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created by expressions in the formal parameter list do not have
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visibility of declarations in the function body.
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b. Let varEnv be NewDeclarativeEnvironment(env).
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c. Let varEnvRec be varEnv's EnvironmentRecord.
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d. Set the VariableEnvironment of calleeContext to varEnv.
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e. Let instantiatedVarNames be a new empty List.
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[...]
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---*/
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var x = 'outside';
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var probeParams, probeBody;
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function f(_ = probeParams = function() { return x; }) {
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var x = 'inside';
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probeBody = function() { return x; };
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}
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f();
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assert.sameValue(probeParams(), 'outside');
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assert.sameValue(probeBody(), 'inside');
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