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- // 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 chain expansions in an async context
- info: |
- Left-Hand-Side Expressions
- OptionalExpression
- MemberExpression [PrimaryExpression Identifier] OptionalChain
- OptionalChain ?.[Expression]
- features: [optional-chaining]
- flags: [async]
- ---*/
- async function checkAssertions() {
- assert.sameValue(await [11]?.[0], 11);
- assert.sameValue([22, 33]?.[await Promise.resolve(1)], 33);
- assert.sameValue([44, await Promise.resolve(55)]?.[1], 55);
- assert.sameValue(undefined?.[
- await Promise.reject(new Error('unreachable'))
- ], undefined);
- }
- checkAssertions().then($DONE, $DONE);
|
