mirror of
https://github.com/tc39/test262.git
synced 2025-11-03 21:24:30 +01:00
49 lines
1.5 KiB
JavaScript
49 lines
1.5 KiB
JavaScript
// This file was procedurally generated from the following sources:
|
|
// - src/dstr-binding/ary-ptrn-elision-step-err.case
|
|
// - src/dstr-binding/error/let-stmt.template
|
|
/*---
|
|
description: Elision advances iterator and forwards abrupt completions (`let` statement)
|
|
esid: sec-let-and-const-declarations-runtime-semantics-evaluation
|
|
features: [generators, destructuring-binding]
|
|
flags: [generated]
|
|
info: |
|
|
LexicalBinding : BindingPattern Initializer
|
|
|
|
1. Let rhs be the result of evaluating Initializer.
|
|
2. Let value be GetValue(rhs).
|
|
3. ReturnIfAbrupt(value).
|
|
4. Let env be the running execution context's LexicalEnvironment.
|
|
5. Return the result of performing BindingInitialization for BindingPattern
|
|
using value and env as the arguments.
|
|
|
|
13.3.3.6 Runtime Semantics: IteratorBindingInitialization
|
|
|
|
ArrayBindingPattern : [ Elision ]
|
|
|
|
1. Return the result of performing
|
|
IteratorDestructuringAssignmentEvaluation of Elision with iteratorRecord
|
|
as the argument.
|
|
|
|
12.14.5.3 Runtime Semantics: IteratorDestructuringAssignmentEvaluation
|
|
|
|
Elision : ,
|
|
|
|
1. If iteratorRecord.[[done]] is false, then
|
|
a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
|
|
b. If next is an abrupt completion, set iteratorRecord.[[done]] to true.
|
|
c. ReturnIfAbrupt(next).
|
|
|
|
---*/
|
|
var following = 0;
|
|
var iter =function* () {
|
|
throw new Test262Error();
|
|
following += 1;
|
|
}();
|
|
|
|
assert.throws(Test262Error, function() {
|
|
let [,] = iter;
|
|
});
|
|
|
|
iter.next();
|
|
assert.sameValue(following, 0, 'Iterator was properly closed.');
|