mirror of https://github.com/tc39/test262.git
31 lines
896 B
JavaScript
31 lines
896 B
JavaScript
// Copyright 2021 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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description: Parsing observes the `Yield` production parameter when absent (without strict mode)
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info: |
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Syntax
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RelationalExpression[In, Yield, Await]:
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[...]
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[+In] RelationalExpression[+In, ?Yield, ?Await] in ShiftExpression[?Yield, ?Await]
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[...]
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1. Let lref be the result of evaluating RelationalExpression.
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2. Let lval be ? GetValue(lref).
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3. Let rref be the result of evaluating ShiftExpression.
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4. Let rval be ? GetValue(rref).
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5. If Type(rval) is not Object, throw a TypeError exception.
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6. Return ? HasProperty(rval, ? ToPropertyKey(lval)).
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esid: sec-relational-operators
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flags: [noStrict]
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---*/
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var yield;
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yield = {'': 0};
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assert.sameValue('' in (yield), true);
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yield = {};
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assert.sameValue('' in (yield), false);
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