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// Copyright 2021 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
description: Parsing observes the `Yield` production parameter when absent (without strict mode)
info: |
Syntax
RelationalExpression[In, Yield, Await]:
[...]
[+In] RelationalExpression[+In, ?Yield, ?Await] in ShiftExpression[?Yield, ?Await]
[...]
1. Let lref be the result of evaluating RelationalExpression.
2. Let lval be ? GetValue(lref).
3. Let rref be the result of evaluating ShiftExpression.
4. Let rval be ? GetValue(rref).
5. If Type(rval) is not Object, throw a TypeError exception.
6. Return ? HasProperty(rval, ? ToPropertyKey(lval)).
esid: sec-relational-operators
flags: [noStrict]
---*/
var yield;
yield = {'': 0};
assert.sameValue('' in (yield), true);
yield = {};
assert.sameValue('' in (yield), false);
reportCompare(0, 0);