Strict mode Failing
Expected no error, got SyntaxError: warning: the variable "unresolved" was not declared in anonymous function " 9#"
Features:
- logical-assignment-operators
Expected no error, got SyntaxError: warning: the variable "unresolved" was not declared in anonymous function " 9#"
// 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: >
ReferenceError is thrown if the AssignmentExpression of a Logical
Assignment operator(??=) evaluates to an unresolvable reference and the
AssignmentExpression is evaluated.
features: [logical-assignment-operators]
---*/
var value = undefined;
assert.throws(ReferenceError, function() {
value ??= unresolved;
});
assert.sameValue(value, undefined, "value");