Strict mode Failing
Expected no error, got SyntaxError: async generators are unsupported
non-Strict mode Failing
Expected no error, got SyntaxError: async generators are unsupported
Features:
- async-iteration
Expected no error, got SyntaxError: async generators are unsupported
Expected no error, got SyntaxError: async generators are unsupported
// Copyright (C) 2022 Kevin Gibbons. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-generator-function-definitions-runtime-semantics-evaluation
description: >
`yield*` in an async generator does not await promises returned by a manually implemented async iterator.
flags: [async]
features: [async-iteration]
---*/
var innerPromise = Promise.resolve("unwrapped value");
var asyncIter = {
[Symbol.asyncIterator]() {
return this;
},
next() {
return {
done: false,
value: innerPromise,
};
},
get return() {
throw new Test262Error(".return should not be accessed");
},
get throw() {
throw new Test262Error(".throw should not be accessed");
},
};
async function* f() {
yield* asyncIter;
}
f()
.next()
.then(v => {
assert.sameValue(v.value, innerPromise, "yield* should not unwrap promises from manually-implemented async iterators");
})
.then($DONE, $DONE)