mirror of https://github.com/tc39/test262.git
43 lines
1.5 KiB
JavaScript
43 lines
1.5 KiB
JavaScript
// This file was procedurally generated from the following sources:
|
|
// - src/dstr-assignment-for-await/array-elem-put-const.case
|
|
// - src/dstr-assignment-for-await/default/async-func-decl.template
|
|
/*---
|
|
description: The assignment target should obey `const` semantics. (for-await-of statement in an async function declaration)
|
|
esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
|
|
features: [const, destructuring-binding, async-iteration]
|
|
flags: [generated, async]
|
|
info: |
|
|
IterationStatement :
|
|
for await ( LeftHandSideExpression of AssignmentExpression ) Statement
|
|
|
|
1. Let keyResult be the result of performing ? ForIn/OfHeadEvaluation(« »,
|
|
AssignmentExpression, iterate).
|
|
2. Return ? ForIn/OfBodyEvaluation(LeftHandSideExpression, Statement,
|
|
keyResult, assignment, labelSet).
|
|
|
|
13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
|
|
|
|
[...]
|
|
5. If destructuring is true and if lhsKind is assignment, then
|
|
a. Assert: lhs is a LeftHandSideExpression.
|
|
b. Let assignmentPattern be the parse of the source text corresponding to
|
|
lhs using AssignmentPattern as the goal symbol.
|
|
[...]
|
|
---*/
|
|
const c = null;
|
|
|
|
let iterCount = 0;
|
|
async function fn() {
|
|
for await ([ c ] of [[1]]) {
|
|
|
|
iterCount += 1;
|
|
}
|
|
}
|
|
|
|
let promise = fn();
|
|
|
|
promise.then(() => $DONE('Promise incorrectly fulfilled.'), ({ constructor }) => {
|
|
assert.sameValue(iterCount, 0);
|
|
assert.sameValue(constructor, TypeError);
|
|
}).then($DONE, $DONE);
|