Source code
Revision control
Copy as Markdown
Other Tools
// |reftest| async
// This file was procedurally generated from the following sources:
// - src/dstr-binding-for-await/obj-ptrn-rest-val-obj.case
// - src/dstr-binding-for-await/default/for-await-of-async-func-let.template
/*---
description: Rest object contains just unextracted data (for-await-of statement)
esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
features: [object-rest, destructuring-binding, async-iteration]
flags: [generated, async]
includes: [propertyHelper.js]
info: |
IterationStatement :
for await ( ForDeclaration of AssignmentExpression ) Statement
[...]
2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
lexicalBinding, labelSet, async).
13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
[...]
4. Let destructuring be IsDestructuring of lhs.
[...]
6. Repeat
[...]
j. If destructuring is false, then
[...]
k. Else
i. If lhsKind is assignment, then
[...]
ii. Else if lhsKind is varBinding, then
[...]
iii. Else,
1. Assert: lhsKind is lexicalBinding.
2. Assert: lhs is a ForDeclaration.
3. Let status be the result of performing BindingInitialization
for lhs passing nextValue and iterationEnv as arguments.
[...]
---*/
var iterCount = 0;
async function fn() {
for await (let {a, b, ...rest} of [{x: 1, y: 2, a: 5, b: 3}]) {
assert.sameValue(rest.a, undefined);
assert.sameValue(rest.b, undefined);
verifyProperty(rest, "x", {
enumerable: true,
writable: true,
configurable: true,
value: 1
});
verifyProperty(rest, "y", {
enumerable: true,
writable: true,
configurable: true,
value: 2
});
iterCount += 1;
}
}
fn()
.then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
.then($DONE, $DONE);