diff options
Diffstat (limited to 'test/language/expressions/optional-chaining/update-expression-prefix.js')
-rw-r--r-- | test/language/expressions/optional-chaining/update-expression-prefix.js | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/test/language/expressions/optional-chaining/update-expression-prefix.js b/test/language/expressions/optional-chaining/update-expression-prefix.js new file mode 100644 index 000000000..fb4b8ff8a --- /dev/null +++ b/test/language/expressions/optional-chaining/update-expression-prefix.js @@ -0,0 +1,23 @@ +// Copyright 2019 Google, Inc. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. +/*--- +esid: prod-OptionalExpression +description: > + optional chaining is forbidden in write contexts +info: | + UpdateExpression[Yield, Await]: + LeftHandSideExpression++ + LeftHandSideExpression-- + ++UnaryExpression + --UnaryExpression +features: [optional-chaining] +negative: + type: SyntaxError + phase: parse +---*/ + +$DONOTEVALUATE(); + +// --UnaryExpression +const a = {}; +--a?.b; |