Strict mode Failing
Expected no error, got SyntaxError: warning: the variable "Promise" was not declared in function "?anon_0_?anon_0_checkAssertions"
Features:
- optional-chaining
Expected no error, got SyntaxError: warning: the variable "Promise" was not declared in function "?anon_0_?anon_0_checkAssertions"
// 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] includes: [asyncHelpers.js] ---*/ 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); } asyncTest(checkAssertions);