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65 lines
1.9 KiB
JavaScript
65 lines
1.9 KiB
JavaScript
// This file was procedurally generated from the following sources:
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// - src/dstr-binding/ary-ptrn-rest-ary-elision.case
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// - src/dstr-binding/default/const-stmt.template
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/*---
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description: Rest element containing an elision (`const` statement)
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esid: sec-let-and-const-declarations-runtime-semantics-evaluation
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es6id: 13.3.1.4
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features: [generators, destructuring-binding]
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flags: [generated]
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info: |
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LexicalBinding : BindingPattern Initializer
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1. Let rhs be the result of evaluating Initializer.
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2. Let value be GetValue(rhs).
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3. ReturnIfAbrupt(value).
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4. Let env be the running execution context's LexicalEnvironment.
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5. Return the result of performing BindingInitialization for BindingPattern
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using value and env as the arguments.
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13.3.3.6 Runtime Semantics: IteratorBindingInitialization
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BindingRestElement : ... BindingPattern
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1. Let A be ArrayCreate(0).
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[...]
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3. Repeat
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[...]
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b. If iteratorRecord.[[done]] is true, then
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i. Return the result of performing BindingInitialization of
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BindingPattern with A and environment as the arguments.
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[...]
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13.3.3.6 Runtime Semantics: IteratorBindingInitialization
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ArrayBindingPattern : [ Elision ]
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1. Return the result of performing
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IteratorDestructuringAssignmentEvaluation of Elision with iteratorRecord
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as the argument.
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12.14.5.3 Runtime Semantics: IteratorDestructuringAssignmentEvaluation
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Elision : ,
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1. If iteratorRecord.[[done]] is false, then
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a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
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b. If next is an abrupt completion, set iteratorRecord.[[done]] to true.
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c. ReturnIfAbrupt(next).
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d. If next is false, set iteratorRecord.[[done]] to true.
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2. Return NormalCompletion(empty).
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---*/
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var first = 0;
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var second = 0;
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function* g() {
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first += 1;
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yield;
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second += 1;
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};
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const [...[,]] = g();
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assert.sameValue(first, 1);
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assert.sameValue(second, 1);
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