JSTests/test262/test/language/expressions/logical-assignment/lgcl-nullish-assignment-operator-namedevaluation-arrow-function.js

// Copyright (c) 2020 Ecma International.  All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
esid: sec-assignment-operators-runtime-semantics-evaluation
description: NamedEvaluation of Logical Nullish Assignment
info: |
    AssignmentExpression:
      LeftHandSideExpression ??= AssignmentExpression

    4. If IsAnonymousFunctionDefinition(AssignmentExpression) and IsIdentifierRef of LeftHandSideExpression are both true, then
      a. Let rval be NamedEvaluation of AssignmentExpression with argument GetReferencedName(lref).
features: [logical-assignment-operators]

---*/

var value = undefined;
value ??= () => {};

assert.sameValue(value.name, "value", "value");