mirror of https://github.com/tc39/test262.git
45 lines
1.5 KiB
JavaScript
45 lines
1.5 KiB
JavaScript
// This file was procedurally generated from the following sources:
|
|
// - src/dstr-binding/ary-ptrn-elem-ary-rest-iter.case
|
|
// - src/dstr-binding/default/const-stmt.template
|
|
/*---
|
|
description: BindingElement with array binding pattern and initializer is not used (`const` statement)
|
|
esid: sec-let-and-const-declarations-runtime-semantics-evaluation
|
|
es6id: 13.3.1.4
|
|
features: [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
|
|
|
|
BindingElement : BindingPatternInitializer opt
|
|
|
|
1. If iteratorRecord.[[done]] is false, then
|
|
a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
|
|
[...]
|
|
e. Else,
|
|
i. Let v be IteratorValue(next).
|
|
[...]
|
|
4. Return the result of performing BindingInitialization of BindingPattern
|
|
with v and environment as the arguments.
|
|
---*/
|
|
var values = [2, 1, 3];
|
|
var initCount = 0;
|
|
|
|
const [[...x] = function() { initCount += 1; }()] = [values];
|
|
|
|
assert(Array.isArray(x));
|
|
assert.sameValue(x[0], 2);
|
|
assert.sameValue(x[1], 1);
|
|
assert.sameValue(x[2], 3);
|
|
assert.sameValue(x.length, 3);
|
|
assert.notSameValue(x, values);
|
|
assert.sameValue(initCount, 0);
|