// This file was procedurally generated from the following sources: // - src/dstr-assignment-for-await/array-elem-trlg-iter-rest-nrml-close-skip.case // - src/dstr-assignment-for-await/async-generator/async-gen-decl.template /*--- description: IteratorClose is not called when rest element evaluation has exhausted the iterator (for-await-of statement in an async generator declaration) esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation features: [Symbol.iterator, 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. [...] ArrayAssignmentPattern : [ AssignmentElementList , Elisionopt AssignmentRestElementopt ] [...] 6. If AssignmentRestElement is present, then a. Let status be the result of performing IteratorDestructuringAssignmentEvaluation of AssignmentRestElement with iteratorRecord as the argument. 7. If iteratorRecord.[[Done]] is false, return ? IteratorClose(iterator, status). 8. Return Completion(status). ---*/ let nextCount = 0; let returnCount = 0; let x, y; let iterator = { next() { nextCount += 1; return { value: nextCount, done: nextCount > 1 }; }, return() { returnCount += 1; } }; let iterable = { [Symbol.iterator]() { return iterator; } }; let iterCount = 0; async function * fn() { for await ([ x , ...y ] of [iterable]) { iterCount += 1; } } let iter = fn(); iter.next().then(() => { iter.return().then(() => { assert.sameValue(nextCount, 2, 'nextCount'); assert.sameValue(returnCount, 0, 'returnCount'); assert.sameValue(x, 1, 'x'); assert.sameValue(y.length, 0, 'y.length'); }).then($DONE, $DONE); }, $DONE).catch($DONE);