mirror of https://github.com/tc39/test262.git
60 lines
1.8 KiB
JavaScript
60 lines
1.8 KiB
JavaScript
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// This file was procedurally generated from the following sources:
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// - src/dstr-binding/ary-ptrn-elem-id-iter-done.case
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// - src/dstr-binding/default/for-of-const.template
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/*---
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description: SingleNameBinding when value iteration was completed previously (for-of statement)
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esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
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es6id: 13.7.5.11
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features: [destructuring-binding]
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flags: [generated]
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info: |
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IterationStatement :
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for ( ForDeclaration of AssignmentExpression ) Statement
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[...]
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3. Return ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
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lexicalBinding, labelSet).
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13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
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[...]
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3. Let destructuring be IsDestructuring of lhs.
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[...]
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5. Repeat
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[...]
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h. If destructuring is false, then
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[...]
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i. Else
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i. If lhsKind is assignment, then
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[...]
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ii. Else if lhsKind is varBinding, then
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[...]
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iii. Else,
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1. Assert: lhsKind is lexicalBinding.
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2. Assert: lhs is a ForDeclaration.
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3. Let status be the result of performing BindingInitialization
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for lhs passing nextValue and iterationEnv as arguments.
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[...]
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13.3.3.6 Runtime Semantics: IteratorBindingInitialization
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SingleNameBinding : BindingIdentifier Initializeropt
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[...]
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4. If iteratorRecord.[[done]] is false, then
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[...]
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5. If iteratorRecord.[[done]] is true, let v be undefined.
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[...]
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8. Return InitializeReferencedBinding(lhs, v).
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---*/
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var iterCount = 0;
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for (const [_, x] of [[]]) {
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assert.sameValue(x, undefined);
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iterCount += 1;
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}
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assert.sameValue(iterCount, 1, 'iteration occurred as expected');
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