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37 lines
1.2 KiB
JavaScript
37 lines
1.2 KiB
JavaScript
// Copyright (C) 2023 Alexey Shvayka. 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-globaldeclarationinstantiation
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description: No let binding collision with existing var declaration due to eval().
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info: |
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In strict mode:
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PerformEval ( x, strictCaller, direct )
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[...]
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16. If direct is true, then
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a. Let lexEnv be NewDeclarativeEnvironment(runningContext's LexicalEnvironment).
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[...]
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18. If strictEval is true, set varEnv to lexEnv.
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In sloppy mode:
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GlobalDeclarationInstantiation ( script, env )
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[...]
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3. For each element name of lexNames, do
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a. If env.HasLexicalDeclaration(name) is true, throw a SyntaxError exception.
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b. Let hasRestrictedGlobal be ? env.HasRestrictedGlobalProperty(name).
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c. NOTE: Global var and function bindings (except those that are introduced by non-strict direct eval) are non-configurable and are therefore restricted global properties.
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d. If hasRestrictedGlobal is true, throw a SyntaxError exception.
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---*/
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eval('var test262Var;');
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eval('function test262Fn() {}');
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$262.evalScript('let test262Var = 1;');
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assert.sameValue(test262Var, 1);
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$262.evalScript('const test262Fn = 2;');
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assert.sameValue(test262Fn, 2);
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