| // Copyright (C) 2020 Rick Waldron. All rights reserved. | |
| // This code is governed by the BSD license found in the LICENSE file. | |
| /*--- | |
| esid: sec-assignment-operators | |
| description: > | |
| Strict Mode - SyntaxError is thrown if the identifier eval appear | |
| as the LeftHandSideExpression of a Logical Assignment operator(??=) | |
| flags: [onlyStrict] | |
| negative: | |
| phase: parse | |
| type: SyntaxError | |
| features: [logical-assignment-operators] | |
| ---*/ | |
| $DONOTEVALUATE(); | |
| eval ??= 20; |