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37 lines
971 B
JavaScript
37 lines
971 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 present
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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]PrivateIdentifier in ShiftExpression[?Yield, ?Await]
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[...]
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1. Let privateIdentifier be the StringValue of PrivateIdentifier.
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2. Let rref be the result of evaluating ShiftExpression.
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3. Let rval be ? GetValue(rref).
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4. If Type(rval) is not Object, throw a TypeError exception.
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esid: sec-relational-operators-runtime-semantics-evaluation
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features: [class-fields-private, class-fields-private-in]
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---*/
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class C {
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#field;
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static *isNameIn() {
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return #field in (yield);
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}
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}
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let iter1 = C.isNameIn();
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iter1.next();
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assert.sameValue(iter1.next(new C()).value, true);
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let iter2 = C.isNameIn();
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iter2.next();
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assert.sameValue(iter2.next({}).value, false);
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